Merge branch 'master' into bael-965

This commit is contained in:
slavisa-baeldung 2017-07-03 09:07:13 +01:00
commit 0f49c26335
118 changed files with 1853 additions and 1051 deletions

View File

@ -6,7 +6,7 @@ public class NumbersConsumer implements Runnable {
private final BlockingQueue<Integer> queue;
private final int poisonPill;
public NumbersConsumer(BlockingQueue<Integer> queue, int poisonPill) {
NumbersConsumer(BlockingQueue<Integer> queue, int poisonPill) {
this.queue = queue;
this.poisonPill = poisonPill;
}

View File

@ -9,7 +9,7 @@ public class NumbersProducer implements Runnable {
private final int poisonPill;
private final int poisonPillPerProducer;
public NumbersProducer(BlockingQueue<Integer> numbersQueue, int poisonPill, int poisonPillPerProducer) {
NumbersProducer(BlockingQueue<Integer> numbersQueue, int poisonPill, int poisonPillPerProducer) {
this.numbersQueue = numbersQueue;
this.poisonPill = poisonPill;
this.poisonPillPerProducer = poisonPillPerProducer;

View File

@ -7,7 +7,7 @@ public class BrokenWorker implements Runnable {
private final List<String> outputScraper;
private final CountDownLatch countDownLatch;
public BrokenWorker(final List<String> outputScraper, final CountDownLatch countDownLatch) {
BrokenWorker(final List<String> outputScraper, final CountDownLatch countDownLatch) {
this.outputScraper = outputScraper;
this.countDownLatch = countDownLatch;
}

View File

@ -10,7 +10,7 @@ public class WaitingWorker implements Runnable {
private final CountDownLatch callingThreadBlocker;
private final CountDownLatch completedThreadCounter;
public WaitingWorker(final List<String> outputScraper, final CountDownLatch readyThreadCounter, final CountDownLatch callingThreadBlocker, CountDownLatch completedThreadCounter) {
WaitingWorker(final List<String> outputScraper, final CountDownLatch readyThreadCounter, final CountDownLatch callingThreadBlocker, CountDownLatch completedThreadCounter) {
this.outputScraper = outputScraper;
this.readyThreadCounter = readyThreadCounter;

View File

@ -7,7 +7,7 @@ public class Worker implements Runnable {
private final List<String> outputScraper;
private final CountDownLatch countDownLatch;
public Worker(final List<String> outputScraper, final CountDownLatch countDownLatch) {
Worker(final List<String> outputScraper, final CountDownLatch countDownLatch) {
this.outputScraper = outputScraper;
this.countDownLatch = countDownLatch;
}

View File

@ -7,9 +7,6 @@ import java.util.Random;
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;
/**
* Created by cv on 24/6/17.
*/
public class CyclicBarrierDemo {
private CyclicBarrier cyclicBarrier;
@ -19,7 +16,7 @@ public class CyclicBarrierDemo {
private int NUM_WORKERS;
public void runSimulation(int numWorkers, int numberOfPartialResults) {
private void runSimulation(int numWorkers, int numberOfPartialResults) {
NUM_PARTIAL_RESULTS = numberOfPartialResults;
NUM_WORKERS = numWorkers;
@ -49,9 +46,7 @@ public class CyclicBarrierDemo {
try {
System.out.println(thisThreadName + " waiting for others to reach barrier.");
cyclicBarrier.await();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (BrokenBarrierException e) {
} catch (InterruptedException | BrokenBarrierException e) {
e.printStackTrace();
}
}

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@ -9,7 +9,7 @@ public class DelayObject implements Delayed {
private String data;
private long startTime;
public DelayObject(String data, long delayInMilliseconds) {
DelayObject(String data, long delayInMilliseconds) {
this.data = data;
this.startTime = System.currentTimeMillis() + delayInMilliseconds;
}

View File

@ -7,9 +7,9 @@ import java.util.concurrent.atomic.AtomicInteger;
public class DelayQueueConsumer implements Runnable {
private BlockingQueue<DelayObject> queue;
private final Integer numberOfElementsToTake;
public final AtomicInteger numberOfConsumedElements = new AtomicInteger();
final AtomicInteger numberOfConsumedElements = new AtomicInteger();
public DelayQueueConsumer(BlockingQueue<DelayObject> queue, Integer numberOfElementsToTake) {
DelayQueueConsumer(BlockingQueue<DelayObject> queue, Integer numberOfElementsToTake) {
this.queue = queue;
this.numberOfElementsToTake = numberOfElementsToTake;
}

View File

@ -9,9 +9,9 @@ public class DelayQueueProducer implements Runnable {
private final Integer numberOfElementsToProduce;
private final Integer delayOfEachProducedMessageMilliseconds;
public DelayQueueProducer(BlockingQueue<DelayObject> queue,
Integer numberOfElementsToProduce,
Integer delayOfEachProducedMessageMilliseconds) {
DelayQueueProducer(BlockingQueue<DelayObject> queue,
Integer numberOfElementsToProduce,
Integer delayOfEachProducedMessageMilliseconds) {
this.queue = queue;
this.numberOfElementsToProduce = numberOfElementsToProduce;
this.delayOfEachProducedMessageMilliseconds = delayOfEachProducedMessageMilliseconds;

View File

@ -5,7 +5,7 @@ public class Philosopher implements Runnable {
private final Object leftFork;
private final Object rightFork;
public Philosopher(Object left, Object right) {
Philosopher(Object left, Object right) {
this.leftFork = left;
this.rightFork = right;
}
@ -30,7 +30,6 @@ public class Philosopher implements Runnable {
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
return;
}
}
}

View File

@ -7,7 +7,7 @@ public class FactorialSquareCalculator extends RecursiveTask<Integer> {
final private Integer n;
public FactorialSquareCalculator(Integer n) {
FactorialSquareCalculator(Integer n) {
this.n = n;
}

View File

@ -3,15 +3,15 @@ package com.baeldung.concurrent.future;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
public class SquareCalculator {
class SquareCalculator {
private final ExecutorService executor;
public SquareCalculator(ExecutorService executor) {
SquareCalculator(ExecutorService executor) {
this.executor = executor;
}
public Future<Integer> calculate(Integer input) {
Future<Integer> calculate(Integer input) {
return executor.submit(() -> {
Thread.sleep(1000);
return input * input;

View File

@ -13,71 +13,71 @@ import static java.lang.Thread.sleep;
public class ReentrantLockWithCondition {
static Logger logger = LoggerFactory.getLogger(ReentrantLockWithCondition.class);
private static Logger LOG = LoggerFactory.getLogger(ReentrantLockWithCondition.class);
Stack<String> stack = new Stack<>();
int CAPACITY = 5;
private Stack<String> stack = new Stack<>();
private static final int CAPACITY = 5;
ReentrantLock lock = new ReentrantLock();
Condition stackEmptyCondition = lock.newCondition();
Condition stackFullCondition = lock.newCondition();
private ReentrantLock lock = new ReentrantLock();
private Condition stackEmptyCondition = lock.newCondition();
private Condition stackFullCondition = lock.newCondition();
public void pushToStack(String item) throws InterruptedException {
try {
lock.lock();
if (stack.size() == CAPACITY) {
logger.info(Thread.currentThread().getName() + " wait on stack full");
stackFullCondition.await();
}
logger.info("Pushing the item " + item);
stack.push(item);
stackEmptyCondition.signalAll();
} finally {
lock.unlock();
}
private void pushToStack(String item) throws InterruptedException {
try {
lock.lock();
if (stack.size() == CAPACITY) {
LOG.info(Thread.currentThread().getName() + " wait on stack full");
stackFullCondition.await();
}
LOG.info("Pushing the item " + item);
stack.push(item);
stackEmptyCondition.signalAll();
} finally {
lock.unlock();
}
}
}
public String popFromStack() throws InterruptedException {
try {
lock.lock();
if (stack.size() == 0) {
logger.info(Thread.currentThread().getName() + " wait on stack empty");
stackEmptyCondition.await();
}
return stack.pop();
} finally {
stackFullCondition.signalAll();
lock.unlock();
}
}
private String popFromStack() throws InterruptedException {
try {
lock.lock();
if (stack.size() == 0) {
LOG.info(Thread.currentThread().getName() + " wait on stack empty");
stackEmptyCondition.await();
}
return stack.pop();
} finally {
stackFullCondition.signalAll();
lock.unlock();
}
}
public static void main(String[] args) {
final int threadCount = 2;
ReentrantLockWithCondition object = new ReentrantLockWithCondition();
final ExecutorService service = Executors.newFixedThreadPool(threadCount);
service.execute(() -> {
for (int i = 0; i < 10; i++) {
try {
object.pushToStack("Item " + i);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
final int threadCount = 2;
ReentrantLockWithCondition object = new ReentrantLockWithCondition();
final ExecutorService service = Executors.newFixedThreadPool(threadCount);
service.execute(() -> {
for (int i = 0; i < 10; i++) {
try {
object.pushToStack("Item " + i);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
});
service.execute(() -> {
for (int i = 0; i < 10; i++) {
try {
logger.info("Item popped " + object.popFromStack());
} catch (InterruptedException e) {
e.printStackTrace();
}
}
service.execute(() -> {
for (int i = 0; i < 10; i++) {
try {
LOG.info("Item popped " + object.popFromStack());
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
});
service.shutdown();
}
service.shutdown();
}
}

View File

@ -12,81 +12,77 @@ import static java.lang.Thread.sleep;
public class SharedObjectWithLock {
Logger logger = LoggerFactory.getLogger(SharedObjectWithLock.class);
private static final Logger LOG = LoggerFactory.getLogger(SharedObjectWithLock.class);
ReentrantLock lock = new ReentrantLock(true);
private ReentrantLock lock = new ReentrantLock(true);
int counter = 0;
private int counter = 0;
public void perform() {
void perform() {
lock.lock();
logger.info("Thread - " + Thread.currentThread().getName() + " acquired the lock");
try {
logger.info("Thread - " + Thread.currentThread().getName() + " processing");
counter++;
} catch (Exception exception) {
logger.error(" Interrupted Exception ", exception);
} finally {
lock.unlock();
logger.info("Thread - " + Thread.currentThread().getName() + " released the lock");
}
}
lock.lock();
LOG.info("Thread - " + Thread.currentThread().getName() + " acquired the lock");
try {
LOG.info("Thread - " + Thread.currentThread().getName() + " processing");
counter++;
} catch (Exception exception) {
LOG.error(" Interrupted Exception ", exception);
} finally {
lock.unlock();
LOG.info("Thread - " + Thread.currentThread().getName() + " released the lock");
}
}
public void performTryLock() {
private void performTryLock() {
logger.info("Thread - " + Thread.currentThread().getName() + " attempting to acquire the lock");
try {
boolean isLockAcquired = lock.tryLock(2, TimeUnit.SECONDS);
if (isLockAcquired) {
try {
logger.info("Thread - " + Thread.currentThread().getName() + " acquired the lock");
LOG.info("Thread - " + Thread.currentThread().getName() + " attempting to acquire the lock");
try {
boolean isLockAcquired = lock.tryLock(2, TimeUnit.SECONDS);
if (isLockAcquired) {
try {
LOG.info("Thread - " + Thread.currentThread().getName() + " acquired the lock");
logger.info("Thread - " + Thread.currentThread().getName() + " processing");
sleep(1000);
} finally {
lock.unlock();
logger.info("Thread - " + Thread.currentThread().getName() + " released the lock");
LOG.info("Thread - " + Thread.currentThread().getName() + " processing");
sleep(1000);
} finally {
lock.unlock();
LOG.info("Thread - " + Thread.currentThread().getName() + " released the lock");
}
}
} catch (InterruptedException exception) {
logger.error(" Interrupted Exception ", exception);
}
logger.info("Thread - " + Thread.currentThread().getName() + " could not acquire the lock");
}
}
}
} catch (InterruptedException exception) {
LOG.error(" Interrupted Exception ", exception);
}
LOG.info("Thread - " + Thread.currentThread().getName() + " could not acquire the lock");
}
public ReentrantLock getLock() {
return lock;
}
public ReentrantLock getLock() {
return lock;
}
boolean isLocked() {
return lock.isLocked();
}
boolean isLocked() {
return lock.isLocked();
}
boolean hasQueuedThreads() {
return lock.hasQueuedThreads();
}
boolean hasQueuedThreads() {
return lock.hasQueuedThreads();
}
int getCounter() {
return counter;
}
int getCounter() {
return counter;
}
public static void main(String[] args) {
public static void main(String[] args) {
final int threadCount = 2;
final ExecutorService service = Executors.newFixedThreadPool(threadCount);
final SharedObjectWithLock object = new SharedObjectWithLock();
final int threadCount = 2;
final ExecutorService service = Executors.newFixedThreadPool(threadCount);
final SharedObjectWithLock object = new SharedObjectWithLock();
service.execute(() -> {
object.perform();
});
service.execute(() -> {
object.performTryLock();
});
service.execute(object::perform);
service.execute(object::performTryLock);
service.shutdown();
service.shutdown();
}
}
}

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@ -12,93 +12,93 @@ import java.util.concurrent.locks.StampedLock;
import static java.lang.Thread.sleep;
public class StampedLockDemo {
Map<String, String> map = new HashMap<>();
Logger logger = LoggerFactory.getLogger(StampedLockDemo.class);
private Map<String, String> map = new HashMap<>();
private Logger logger = LoggerFactory.getLogger(StampedLockDemo.class);
private final StampedLock lock = new StampedLock();
private final StampedLock lock = new StampedLock();
public void put(String key, String value) throws InterruptedException {
long stamp = lock.writeLock();
public void put(String key, String value) throws InterruptedException {
long stamp = lock.writeLock();
try {
logger.info(Thread.currentThread().getName() + " acquired the write lock with stamp " + stamp);
map.put(key, value);
} finally {
lock.unlockWrite(stamp);
logger.info(Thread.currentThread().getName() + " unlocked the write lock with stamp " + stamp);
}
}
try {
logger.info(Thread.currentThread().getName() + " acquired the write lock with stamp " + stamp);
map.put(key, value);
} finally {
lock.unlockWrite(stamp);
logger.info(Thread.currentThread().getName() + " unlocked the write lock with stamp " + stamp);
}
}
public String get(String key) throws InterruptedException {
long stamp = lock.readLock();
logger.info(Thread.currentThread().getName() + " acquired the read lock with stamp " + stamp);
try {
sleep(5000);
return map.get(key);
public String get(String key) throws InterruptedException {
long stamp = lock.readLock();
logger.info(Thread.currentThread().getName() + " acquired the read lock with stamp " + stamp);
try {
sleep(5000);
return map.get(key);
} finally {
lock.unlockRead(stamp);
logger.info(Thread.currentThread().getName() + " unlocked the read lock with stamp " + stamp);
} finally {
lock.unlockRead(stamp);
logger.info(Thread.currentThread().getName() + " unlocked the read lock with stamp " + stamp);
}
}
}
}
public String readWithOptimisticLock(String key) throws InterruptedException {
long stamp = lock.tryOptimisticRead();
String value = map.get(key);
private String readWithOptimisticLock(String key) throws InterruptedException {
long stamp = lock.tryOptimisticRead();
String value = map.get(key);
if (!lock.validate(stamp)) {
stamp = lock.readLock();
try {
sleep(5000);
return map.get(key);
if (!lock.validate(stamp)) {
stamp = lock.readLock();
try {
sleep(5000);
return map.get(key);
} finally {
lock.unlock(stamp);
logger.info(Thread.currentThread().getName() + " unlocked the read lock with stamp " + stamp);
} finally {
lock.unlock(stamp);
logger.info(Thread.currentThread().getName() + " unlocked the read lock with stamp " + stamp);
}
}
return value;
}
}
}
return value;
}
public static void main(String[] args) {
final int threadCount = 4;
final ExecutorService service = Executors.newFixedThreadPool(threadCount);
StampedLockDemo object = new StampedLockDemo();
public static void main(String[] args) {
final int threadCount = 4;
final ExecutorService service = Executors.newFixedThreadPool(threadCount);
StampedLockDemo object = new StampedLockDemo();
Runnable writeTask = () -> {
Runnable writeTask = () -> {
try {
object.put("key1", "value1");
} catch (InterruptedException e) {
e.printStackTrace();
}
};
Runnable readTask = () -> {
try {
object.put("key1", "value1");
} catch (InterruptedException e) {
e.printStackTrace();
}
};
Runnable readTask = () -> {
try {
object.get("key1");
} catch (InterruptedException e) {
e.printStackTrace();
}
};
Runnable readOptimisticTask = () -> {
try {
object.get("key1");
} catch (InterruptedException e) {
e.printStackTrace();
}
};
Runnable readOptimisticTask = () -> {
try {
object.readWithOptimisticLock("key1");
} catch (InterruptedException e) {
e.printStackTrace();
}
};
service.submit(writeTask);
service.submit(writeTask);
service.submit(readTask);
service.submit(readOptimisticTask);
try {
object.readWithOptimisticLock("key1");
} catch (InterruptedException e) {
e.printStackTrace();
}
};
service.submit(writeTask);
service.submit(writeTask);
service.submit(readTask);
service.submit(readOptimisticTask);
service.shutdown();
service.shutdown();
}
}
}

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@ -15,106 +15,106 @@ import static java.lang.Thread.sleep;
public class SynchronizedHashMapWithRWLock {
static Map<String, String> syncHashMap = new HashMap<>();
Logger logger = LoggerFactory.getLogger(SynchronizedHashMapWithRWLock.class);
private static Map<String, String> syncHashMap = new HashMap<>();
private Logger logger = LoggerFactory.getLogger(SynchronizedHashMapWithRWLock.class);
private final ReadWriteLock lock = new ReentrantReadWriteLock();
private final Lock readLock = lock.readLock();
private final Lock writeLock = lock.writeLock();
private final ReadWriteLock lock = new ReentrantReadWriteLock();
private final Lock readLock = lock.readLock();
private final Lock writeLock = lock.writeLock();
public void put(String key, String value) throws InterruptedException {
public void put(String key, String value) throws InterruptedException {
try {
writeLock.lock();
logger.info(Thread.currentThread().getName() + " writing");
syncHashMap.put(key, value);
sleep(1000);
} finally {
writeLock.unlock();
}
try {
writeLock.lock();
logger.info(Thread.currentThread().getName() + " writing");
syncHashMap.put(key, value);
sleep(1000);
} finally {
writeLock.unlock();
}
}
}
public String get(String key) {
try {
readLock.lock();
logger.info(Thread.currentThread().getName() + " reading");
return syncHashMap.get(key);
} finally {
readLock.unlock();
}
}
public String get(String key) {
try {
readLock.lock();
logger.info(Thread.currentThread().getName() + " reading");
return syncHashMap.get(key);
} finally {
readLock.unlock();
}
}
public String remove(String key) {
try {
writeLock.lock();
return syncHashMap.remove(key);
} finally {
writeLock.unlock();
}
}
public String remove(String key) {
try {
writeLock.lock();
return syncHashMap.remove(key);
} finally {
writeLock.unlock();
}
}
public boolean containsKey(String key) {
try {
readLock.lock();
return syncHashMap.containsKey(key);
} finally {
readLock.unlock();
}
}
public boolean containsKey(String key) {
try {
readLock.lock();
return syncHashMap.containsKey(key);
} finally {
readLock.unlock();
}
}
boolean isReadLockAvailable() {
return readLock.tryLock();
}
boolean isReadLockAvailable() {
return readLock.tryLock();
}
public static void main(String[] args) throws InterruptedException {
public static void main(String[] args) throws InterruptedException {
final int threadCount = 3;
final ExecutorService service = Executors.newFixedThreadPool(threadCount);
SynchronizedHashMapWithRWLock object = new SynchronizedHashMapWithRWLock();
final int threadCount = 3;
final ExecutorService service = Executors.newFixedThreadPool(threadCount);
SynchronizedHashMapWithRWLock object = new SynchronizedHashMapWithRWLock();
service.execute(new Thread(new Writer(object), "Writer"));
service.execute(new Thread(new Reader(object), "Reader1"));
service.execute(new Thread(new Reader(object), "Reader2"));
service.execute(new Thread(new Writer(object), "Writer"));
service.execute(new Thread(new Reader(object), "Reader1"));
service.execute(new Thread(new Reader(object), "Reader2"));
service.shutdown();
}
service.shutdown();
}
private static class Reader implements Runnable {
private static class Reader implements Runnable {
SynchronizedHashMapWithRWLock object;
SynchronizedHashMapWithRWLock object;
public Reader(SynchronizedHashMapWithRWLock object) {
this.object = object;
}
Reader(SynchronizedHashMapWithRWLock object) {
this.object = object;
}
@Override
public void run() {
for (int i = 0; i < 10; i++) {
object.get("key" + i);
}
}
}
@Override
public void run() {
for (int i = 0; i < 10; i++) {
object.get("key" + i);
}
}
}
private static class Writer implements Runnable {
private static class Writer implements Runnable {
SynchronizedHashMapWithRWLock object;
SynchronizedHashMapWithRWLock object;
public Writer(SynchronizedHashMapWithRWLock object) {
this.object = object;
}
public Writer(SynchronizedHashMapWithRWLock object) {
this.object = object;
}
@Override
public void run() {
for (int i = 0; i < 10; i++) {
try {
object.put("key" + i, "value" + i);
sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
@Override
public void run() {
for (int i = 0; i < 10; i++) {
try {
object.put("key" + i, "value" + i);
sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}

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@ -2,20 +2,20 @@ package com.baeldung.concurrent.skiplist;
import java.time.ZonedDateTime;
public class Event {
class Event {
private final ZonedDateTime eventTime;
private final String content;
public Event(ZonedDateTime eventTime, String content) {
Event(ZonedDateTime eventTime, String content) {
this.eventTime = eventTime;
this.content = content;
}
public ZonedDateTime getEventTime() {
ZonedDateTime getEventTime() {
return eventTime;
}
public String getContent() {
String getContent() {
return content;
}
}

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@ -5,24 +5,24 @@ import java.util.Comparator;
import java.util.concurrent.ConcurrentNavigableMap;
import java.util.concurrent.ConcurrentSkipListMap;
public class EventWindowSort {
class EventWindowSort {
private final ConcurrentSkipListMap<ZonedDateTime, String> events
= new ConcurrentSkipListMap<>(Comparator.comparingLong(value -> value.toInstant().toEpochMilli()));
= new ConcurrentSkipListMap<>(Comparator.comparingLong(value -> value.toInstant().toEpochMilli()));
public void acceptEvent(Event event) {
void acceptEvent(Event event) {
events.put(event.getEventTime(), event.getContent());
}
public ConcurrentNavigableMap<ZonedDateTime, String> getEventsFromLastMinute() {
ConcurrentNavigableMap<ZonedDateTime, String> getEventsFromLastMinute() {
return events.tailMap(ZonedDateTime
.now()
.minusMinutes(1));
.now()
.minusMinutes(1));
}
public ConcurrentNavigableMap<ZonedDateTime, String> getEventsOlderThatOneMinute() {
ConcurrentNavigableMap<ZonedDateTime, String> getEventsOlderThatOneMinute() {
return events.headMap(ZonedDateTime
.now()
.minusMinutes(1));
.now()
.minusMinutes(1));
}
}

View File

@ -13,10 +13,10 @@ public class WaitSleepExample {
private static final Object LOCK = new Object();
public static void main(String... args) throws InterruptedException {
sleepWaitInSyncronizedBlocks();
sleepWaitInSynchronizedBlocks();
}
private static void sleepWaitInSyncronizedBlocks() throws InterruptedException {
private static void sleepWaitInSynchronizedBlocks() throws InterruptedException {
Thread.sleep(1000); // called on the thread
LOG.debug("Thread '" + Thread.currentThread().getName() + "' is woken after sleeping for 1 second");
@ -25,5 +25,5 @@ public class WaitSleepExample {
LOG.debug("Object '" + LOCK + "' is woken after waiting for 1 second");
}
}
}

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@ -5,13 +5,13 @@ public class BaeldungSynchronizedBlocks {
private int count = 0;
private static int staticCount = 0;
public void performSynchronisedTask() {
void performSynchronisedTask() {
synchronized (this) {
setCount(getCount() + 1);
}
}
public static void performStaticSyncTask() {
static void performStaticSyncTask() {
synchronized (BaeldungSynchronizedBlocks.class) {
setStaticCount(getStaticCount() + 1);
}
@ -25,11 +25,11 @@ public class BaeldungSynchronizedBlocks {
this.count = count;
}
public static int getStaticCount() {
static int getStaticCount() {
return staticCount;
}
public static void setStaticCount(int staticCount) {
private static void setStaticCount(int staticCount) {
BaeldungSynchronizedBlocks.staticCount = staticCount;
}
}

View File

@ -5,17 +5,17 @@ public class BaeldungSynchronizedMethods {
private int sum = 0;
private int syncSum = 0;
public static int staticSum = 0;
static int staticSum = 0;
public void calculate() {
void calculate() {
setSum(getSum() + 1);
}
public synchronized void synchronisedCalculate() {
synchronized void synchronisedCalculate() {
setSyncSum(getSyncSum() + 1);
}
public static synchronized void syncStaticCalculate() {
static synchronized void syncStaticCalculate() {
staticSum = staticSum + 1;
}
@ -27,11 +27,11 @@ public class BaeldungSynchronizedMethods {
this.sum = sum;
}
public int getSyncSum() {
int getSyncSum() {
return syncSum;
}
public void setSyncSum(int syncSum) {
private void setSyncSum(int syncSum) {
this.syncSum = syncSum;
}
}

View File

@ -6,40 +6,40 @@ import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
import java.time.temporal.TemporalAdjusters;
public class UseLocalDate {
class UseLocalDate {
public LocalDate getLocalDateUsingFactoryOfMethod(int year, int month, int dayOfMonth) {
LocalDate getLocalDateUsingFactoryOfMethod(int year, int month, int dayOfMonth) {
return LocalDate.of(year, month, dayOfMonth);
}
public LocalDate getLocalDateUsingParseMethod(String representation) {
LocalDate getLocalDateUsingParseMethod(String representation) {
return LocalDate.parse(representation);
}
public LocalDate getLocalDateFromClock() {
LocalDate getLocalDateFromClock() {
LocalDate localDate = LocalDate.now();
return localDate;
}
public LocalDate getNextDay(LocalDate localDate) {
LocalDate getNextDay(LocalDate localDate) {
return localDate.plusDays(1);
}
public LocalDate getPreviousDay(LocalDate localDate) {
LocalDate getPreviousDay(LocalDate localDate) {
return localDate.minus(1, ChronoUnit.DAYS);
}
public DayOfWeek getDayOfWeek(LocalDate localDate) {
DayOfWeek getDayOfWeek(LocalDate localDate) {
DayOfWeek day = localDate.getDayOfWeek();
return day;
}
public LocalDate getFirstDayOfMonth() {
LocalDate getFirstDayOfMonth() {
LocalDate firstDayOfMonth = LocalDate.now().with(TemporalAdjusters.firstDayOfMonth());
return firstDayOfMonth;
}
public LocalDateTime getStartOfDay(LocalDate localDate) {
LocalDateTime getStartOfDay(LocalDate localDate) {
LocalDateTime startofDay = localDate.atStartOfDay();
return startofDay;
}

View File

@ -5,31 +5,27 @@ import java.time.temporal.ChronoUnit;
public class UseLocalTime {
public LocalTime getLocalTimeUsingFactoryOfMethod(int hour, int min, int seconds) {
LocalTime localTime = LocalTime.of(hour, min, seconds);
return localTime;
LocalTime getLocalTimeUsingFactoryOfMethod(int hour, int min, int seconds) {
return LocalTime.of(hour, min, seconds);
}
public LocalTime getLocalTimeUsingParseMethod(String timeRepresentation) {
LocalTime localTime = LocalTime.parse(timeRepresentation);
return localTime;
LocalTime getLocalTimeUsingParseMethod(String timeRepresentation) {
return LocalTime.parse(timeRepresentation);
}
public LocalTime getLocalTimeFromClock() {
LocalTime localTime = LocalTime.now();
return localTime;
private LocalTime getLocalTimeFromClock() {
return LocalTime.now();
}
public LocalTime addAnHour(LocalTime localTime) {
LocalTime newTime = localTime.plus(1, ChronoUnit.HOURS);
return newTime;
LocalTime addAnHour(LocalTime localTime) {
return localTime.plus(1, ChronoUnit.HOURS);
}
public int getHourFromLocalTime(LocalTime localTime) {
int getHourFromLocalTime(LocalTime localTime) {
return localTime.getHour();
}
public LocalTime getLocalTimeWithMinuteSetToValue(LocalTime localTime, int minute) {
LocalTime getLocalTimeWithMinuteSetToValue(LocalTime localTime, int minute) {
return localTime.withMinute(minute);
}
}

View File

@ -3,13 +3,13 @@ package com.baeldung.datetime;
import java.time.LocalDate;
import java.time.Period;
public class UsePeriod {
class UsePeriod {
public LocalDate modifyDates(LocalDate localDate, Period period) {
LocalDate modifyDates(LocalDate localDate, Period period) {
return localDate.plus(period);
}
public Period getDifferenceBetweenDates(LocalDate localDate1, LocalDate localDate2) {
Period getDifferenceBetweenDates(LocalDate localDate1, LocalDate localDate2) {
return Period.between(localDate1, localDate2);
}
}

View File

@ -8,12 +8,10 @@ import java.util.Date;
public class UseToInstant {
public LocalDateTime convertDateToLocalDate(Date date) {
LocalDateTime localDateTime = LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
return localDateTime;
return LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
}
public LocalDateTime convertDateToLocalDate(Calendar calendar) {
LocalDateTime localDateTime = LocalDateTime.ofInstant(calendar.toInstant(), ZoneId.systemDefault());
return localDateTime;
return LocalDateTime.ofInstant(calendar.toInstant(), ZoneId.systemDefault());
}
}

View File

@ -4,10 +4,9 @@ import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
public class UseZonedDateTime {
class UseZonedDateTime {
public ZonedDateTime getZonedDateTime(LocalDateTime localDateTime, ZoneId zoneId) {
ZonedDateTime zonedDateTime = ZonedDateTime.of(localDateTime, zoneId);
return zonedDateTime;
ZonedDateTime getZonedDateTime(LocalDateTime localDateTime, ZoneId zoneId) {
return ZonedDateTime.of(localDateTime, zoneId);
}
}

View File

@ -13,8 +13,7 @@ public class DirectoryMonitoringExample {
private static final Logger LOG = LoggerFactory.getLogger(DirectoryMonitoringExample.class);
public static final int POLL_INTERVAL = 500;
private static final int POLL_INTERVAL = 500;
public static void main(String[] args) throws Exception {
FileAlterationObserver observer = new FileAlterationObserver(System.getProperty("user.home"));

View File

@ -6,12 +6,12 @@ public class Computer {
private String color;
private Integer healty;
public Computer(final int age, final String color) {
Computer(final int age, final String color) {
this.age = age;
this.color = color;
}
public Computer(final Integer age, final String color, final Integer healty) {
Computer(final Integer age, final String color, final Integer healty) {
this.age = age;
this.color = color;
this.healty = healty;
@ -28,7 +28,7 @@ public class Computer {
this.age = age;
}
public String getColor() {
String getColor() {
return color;
}
@ -36,11 +36,11 @@ public class Computer {
this.color = color;
}
public Integer getHealty() {
Integer getHealty() {
return healty;
}
public void setHealty(final Integer healty) {
void setHealty(final Integer healty) {
this.healty = healty;
}
@ -72,10 +72,7 @@ public class Computer {
final Computer computer = (Computer) o;
if (age != null ? !age.equals(computer.age) : computer.age != null) {
return false;
}
return color != null ? color.equals(computer.color) : computer.color == null;
return (age != null ? age.equals(computer.age) : computer.age == null) && (color != null ? color.equals(computer.color) : computer.color == null);
}

View File

@ -7,8 +7,8 @@ import java.util.List;
public class ComputerUtils {
public static final ComputerPredicate after2010Predicate = (c) -> (c.getAge() > 2010);
public static final ComputerPredicate blackPredicate = (c) -> "black".equals(c.getColor());
static final ComputerPredicate after2010Predicate = (c) -> (c.getAge() > 2010);
static final ComputerPredicate blackPredicate = (c) -> "black".equals(c.getColor());
public static List<Computer> filter(final List<Computer> inventory, final ComputerPredicate p) {
@ -18,7 +18,7 @@ public class ComputerUtils {
return result;
}
public static void repair(final Computer computer) {
static void repair(final Computer computer) {
if (computer.getHealty() < 50) {
computer.setHealty(100);
}

View File

@ -13,7 +13,7 @@ public class MacbookPro extends Computer {
super(age, color);
}
public MacbookPro(Integer age, String color, Integer healty) {
MacbookPro(Integer age, String color, Integer healty) {
super(age, color, healty);
}

View File

@ -15,7 +15,7 @@ public class TimingDynamicInvocationHandler implements InvocationHandler {
private Object target;
public TimingDynamicInvocationHandler(Object target) {
TimingDynamicInvocationHandler(Object target) {
this.target = target;
for(Method method: target.getClass().getDeclaredMethods()) {

View File

@ -1,10 +1,10 @@
package com.baeldung.equalshashcode.entities;
import java.awt.Color;
import java.awt.*;
public class Square extends Rectangle {
Color color;
private Color color;
public Square(double width, Color color) {
super(width, width);

View File

@ -8,7 +8,7 @@ import javax.naming.InitialContext;
import javax.naming.NamingException;
public class LookupFSJNDI {
InitialContext ctx = null;
private InitialContext ctx = null;
public LookupFSJNDI() throws NamingException {
super();

View File

@ -0,0 +1,18 @@
package com.baeldung.maths;
import java.math.BigDecimal;
import java.math.RoundingMode;
public class BigDecimalImpl {
public static void main(String[] args) {
BigDecimal serviceTax = new BigDecimal("56.0084578639");
serviceTax = serviceTax.setScale(2, RoundingMode.CEILING);
BigDecimal entertainmentTax = new BigDecimal("23.00689");
entertainmentTax = entertainmentTax.setScale(2, RoundingMode.FLOOR);
BigDecimal totalTax = serviceTax.add(entertainmentTax);
}
}

View File

@ -0,0 +1,16 @@
package com.baeldung.maths;
import java.math.BigInteger;
public class BigIntegerImpl {
public static void main(String[] args) {
BigInteger numStarsMilkyWay = new BigInteger("8731409320171337804361260816606476");
BigInteger numStarsAndromeda = new BigInteger("5379309320171337804361260816606476");
BigInteger totalStars = numStarsMilkyWay.add(numStarsAndromeda);
}
}

View File

@ -0,0 +1,24 @@
package com.baeldung.maths;
import java.math.BigDecimal;
import java.math.RoundingMode;
import org.junit.Assert;
import org.junit.Test;
public class BigDecimalImplTest {
@Test
public void givenBigDecimalNumbers_whenAddedTogether_thenGetExpectedResult() {
BigDecimal serviceTax = new BigDecimal("56.0084578639");
serviceTax = serviceTax.setScale(2, RoundingMode.CEILING);
BigDecimal entertainmentTax = new BigDecimal("23.00689");
entertainmentTax = entertainmentTax.setScale(2, RoundingMode.FLOOR);
BigDecimal totalTax = serviceTax.add(entertainmentTax);
BigDecimal result = BigDecimal.valueOf(79.01);
Assert.assertEquals(result, totalTax);
}
}

View File

@ -0,0 +1,22 @@
package com.baeldung.maths;
import java.math.BigInteger;
import org.junit.Assert;
import org.junit.Test;
public class BigIntegerImplTest {
@Test
public void givenBigIntegerNumbers_whenAddedTogether_thenGetExpectedResult() {
BigInteger numStarsMilkyWay = new BigInteger("8731409320171337804361260816606476");
BigInteger numStarsAndromeda = new BigInteger("5379309320171337804361260816606476");
BigInteger totalStars = numStarsMilkyWay.add(numStarsAndromeda);
BigInteger result = new BigInteger("14110718640342675608722521633212952");
Assert.assertEquals(result, totalStars);
}
}

View File

@ -26,36 +26,48 @@
//@FixMethodOrder(MethodSorters.NAME_ASCENDING)
//@RunWith(JUnit4.class)
//public class MemoryLeaksTest {
// private Random random = new Random();
// public static final ArrayList<Double> list = new ArrayList<Double>(1000000);
//
// @Test(expected = OutOfMemoryError.class)
// @Test
// public void givenStaticField_whenLotsOfOperations_thenMemoryLeak() throws InterruptedException {
// while (true) {
// int k = random.nextInt(100000);
// System.out.println(k);
// Thread.sleep(10000); //to allow GC do its job
// for (int i = 0; i < k; i++) {
// list.add(random.nextDouble());
// }
// for (int i = 0; i < 1000000; i++) {
// list.add(random.nextDouble());
// }
// System.gc();
// Thread.sleep(10000); //to allow GC do its job
// }
//
//
// @Test
// public void givenNormalField_whenLotsOfOperations_thenGCWorksFine() throws InterruptedException {
// addElementsToTheList();
// System.gc();
// Thread.sleep(10000); //to allow GC do its job
// }
//
// private void addElementsToTheList(){
// ArrayList<Double> list = new ArrayList<Double>(1000000);
// for (int i = 0; i < 1000000; i++) {
// list.add(random.nextDouble());
// }
// }
//
// @SuppressWarnings({ "resource" })
// @Test(expected = OutOfMemoryError.class)
// public void givenLengthString_whenIntern_thenOutOfMemory() throws IOException {
// public void givenLengthString_whenIntern_thenOutOfMemory() throws IOException, InterruptedException {
// Thread.sleep(15000);
// String str = new Scanner(new File("src/test/resources/large.txt"), "UTF-8").useDelimiter("\\A")
// .next();
// System.gc();
// str.intern();
// System.out.println("Done");
// Thread.sleep(10000);
// }
//
// @Test(expected = OutOfMemoryError.class)
// public void givenURL_whenUnclosedStream_thenOutOfMemory() throws IOException, URISyntaxException {
// String str = "";
// URLConnection conn = new URL("http://norvig.com/big.txt").openConnection();
// URLConnection conn = new URL("http:norvig.com/big.txt").openConnection();
// BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8));
// while (br.readLine() != null) {
// str += br.readLine();
@ -66,7 +78,7 @@
// @SuppressWarnings("unused")
// @Test(expected = OutOfMemoryError.class)
// public void givenConnection_whenUnclosed_thenOutOfMemory() throws IOException, URISyntaxException {
// URL url = new URL("ftp://speedtest.tele2.net");
// URL url = new URL("ftp:speedtest.tele2.net");
// URLConnection urlc = url.openConnection();
// InputStream is = urlc.getInputStream();
// String str = "";

View File

@ -31,6 +31,7 @@
<arquillian-glassfish.version>1.0.0.Final</arquillian-glassfish.version>
<maven-war-plugin.version>2.6</maven-war-plugin.version>
<org.springframework.security.version>4.2.3.RELEASE</org.springframework.security.version>
</properties>
<prerequisites>
@ -136,6 +137,34 @@
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>javax.mvc</groupId>
<artifactId>javax.mvc-api</artifactId>
<version>20160715</version>
</dependency>
<dependency>
<groupId>org.glassfish.ozark</groupId>
<artifactId>ozark</artifactId>
<version>20160715</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${org.springframework.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${org.springframework.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>${org.springframework.security.version}</version>
</dependency>
</dependencies>
<build>
@ -378,4 +407,18 @@
</properties>
</profile>
</profiles>
<repositories>
<repository>
<id>bintray-mvc-spec-maven</id>
<name>bintray</name>
<url>http://dl.bintray.com/mvc-spec/maven</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>

View File

@ -0,0 +1,13 @@
package com.baeldung.springSecurity;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
/**
* Application class required by JAX-RS. If you don't want to have any
* prefix in the URL, you can set the application path to "/".
*/
@ApplicationPath("/")
public class ApplicationConfig extends Application {
}

View File

@ -0,0 +1,10 @@
package com.baeldung.springSecurity;
import org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer;
public class SecurityWebApplicationInitializer extends AbstractSecurityWebApplicationInitializer {
public SecurityWebApplicationInitializer() {
super(SpringSecurityConfig.class);
}
}

View File

@ -0,0 +1,46 @@
package com.baeldung.springSecurity;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
@Configuration
@EnableWebSecurity
public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth
.inMemoryAuthentication()
.withUser("user1")
.password("user1Pass")
.roles("USER")
.and()
.withUser("admin")
.password("adminPass")
.roles("ADMIN");
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http
.csrf()
.disable()
.authorizeRequests()
.antMatchers("/auth/login*")
.anonymous()
.antMatchers("/home/admin*")
.hasRole("ADMIN")
.anyRequest()
.authenticated()
.and()
.formLogin()
.loginPage("/auth/login")
.defaultSuccessUrl("/home", true)
.failureUrl("/auth/login?error=true")
.and()
.logout()
.logoutSuccessUrl("/auth/login");
}
}

View File

@ -0,0 +1,28 @@
package com.baeldung.springSecurity.controller;
import javax.mvc.annotation.Controller;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
@Path("/home")
@Controller
public class HomeController {
@GET
public String home() {
return "home.jsp";
}
@GET
@Path("/user")
public String admin() {
return "user.jsp";
}
@GET
@Path("/admin")
public String user() {
return "admin.jsp";
}
}

View File

@ -0,0 +1,15 @@
package com.baeldung.springSecurity.controller;
import javax.mvc.annotation.Controller;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
@Path("/auth/login")
@Controller
public class LoginController {
@GET
public String login() {
return "login.jsp";
}
}

View File

@ -0,0 +1,12 @@
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="security" uri="http://www.springframework.org/security/tags" %>
<html>
<head></head>
<body>
<h1>Welcome to the ADMIN page</h1>
<a href="<c:url value="/logout" />">Logout</a>
</body>
</html>

View File

@ -0,0 +1,26 @@
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="security" uri="http://www.springframework.org/security/tags" %>
<html>
<head></head>
<body>
<h1>This is the body of the sample view</h1>
<security:authorize access="hasRole('USER')">
This text is only visible to a user
<br/> <br/>
<a href="<c:url value="/home/user" />">Restricted Admin Page</a>
<br/> <br/>
</security:authorize>
<security:authorize access="hasRole('ADMIN')">
This text is only visible to an admin
<br/>
<a href="<c:url value="/home/admin" />">Admin Page</a>
<br/>
</security:authorize>
<a href="<c:url value="/logout" />">Logout</a>
</body>
</html>

View File

@ -0,0 +1,26 @@
<html>
<head></head>
<body>
<h1>Login</h1>
<form name='f' action="/auth/login" method='POST'>
<table>
<tr>
<td>User:</td>
<td><input type='text' name='username' value=''></td>
</tr>
<tr>
<td>Password:</td>
<td><input type='password' name='password'/></td>
</tr>
<tr>
<td><input name="submit" type="submit" value="submit"/></td>
</tr>
</table>
</form>
</body>
</html>

View File

@ -0,0 +1,12 @@
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="security" uri="http://www.springframework.org/security/tags" %>
<html>
<head></head>
<body>
<h1>Welcome to the Restricted Admin page</h1>
<a href="<c:url value="/logout" />">Logout</a>
</body>
</html>

View File

@ -1,8 +0,0 @@
## Relevant articles:
- [Introduction to the Kotlin Language](http://www.baeldung.com/kotlin)
- [A guide to the “when{}” block in Kotlin](http://www.baeldung.com/kotlin-when)
- [Comprehensive Guide to Null Safety in Kotlin](http://www.baeldung.com/kotlin-null-safety)
- [Kotlin Java Interoperability](http://www.baeldung.com/kotlin-java-interoperability)
- [Difference Between “==” and “===” in Kotlin](http://www.baeldung.com/kotlin-equality-operators)
- [Generics in Kotlin](http://www.baeldung.com/kotlin-generics)

View File

@ -1,121 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>kotlin-mockito</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib</artifactId>
<version>${kotlin.version}</version>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.nhaarman</groupId>
<artifactId>mockito-kotlin</artifactId>
<version>${mockito-kotlin.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
<testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
<plugins>
<plugin>
<artifactId>kotlin-maven-plugin</artifactId>
<groupId>org.jetbrains.kotlin</groupId>
<version>${kotlin.version}</version>
<executions>
<execution>
<id>compile</id>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
<sourceDir>${project.basedir}/src/main/java</sourceDir>
</sourceDirs>
</configuration>
</execution>
<execution>
<id>test-compile</id>
<goals>
<goal>test-compile</goal>
</goals>
<configuration>
<sourceDirs>
<sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
<sourceDir>${project.basedir}/src/test/java</sourceDir>
</sourceDirs>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler.version}</version>
<executions>
<!-- Replacing default-compile as it is treated specially
by maven -->
<execution>
<id>default-compile</id>
<phase>none</phase>
</execution>
<!-- Replacing default-testCompile as it is treated specially
by maven -->
<execution>
<id>default-testCompile</id>
<phase>none</phase>
</execution>
<execution>
<id>java-compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
<execution>
<id>java-test-compile</id>
<phase>test-compile</phase>
<goals>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<properties>
<mockito.version>2.8.9</mockito.version>
<junit.version>4.12</junit.version>
<kotlin.version>1.1.2-4</kotlin.version>
<mockito-kotlin.version>1.5.0</mockito-kotlin.version>
<maven-compiler.version>3.5.1</maven-compiler.version>
</properties>
</project>

View File

@ -1,24 +0,0 @@
package com.baeldung.java;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
public class ArrayExample {
public int sumValues(int[] nums) {
int res = 0;
for (int x:nums) {
res += x;
}
return res;
}
public void writeList() throws IOException {
File file = new File("E://file.txt");
FileReader fr = new FileReader(file);
fr.close();
}
}

View File

@ -1,24 +0,0 @@
package com.baeldung.java;
public class Customer {
private String firstName;
private String lastName;
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
}

View File

@ -1,7 +0,0 @@
package com.baeldung.java;
public class StringUtils {
public static String toUpperCase(String name) {
return name.toUpperCase();
}
}

View File

@ -1,17 +0,0 @@
package com.baeldung.kotlin;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class JavaCallToKotlinUnitTest {
@Test
public void givenKotlinClass_whenCallFromJava_shouldProduceResults() {
//when
int res = new MathematicsOperations().addTwoNumbers(2, 4);
//then
assertEquals(6, res);
}
}

View File

@ -3,7 +3,6 @@
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>kotlin</artifactId>
<version>1.0-SNAPSHOT</version>
@ -13,7 +12,6 @@
<version>1.0.0-SNAPSHOT</version>
</parent>
<repositories>
<repository>
<id>central</id>
@ -21,7 +19,6 @@
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
@ -45,9 +42,14 @@
<artifactId>kotlinx-coroutines-core</artifactId>
<version>${kotlinx.version}</version>
</dependency>
<dependency>
<groupId>com.nhaarman</groupId>
<artifactId>mockito-kotlin</artifactId>
<version>${mockito-kotlin.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
@ -123,6 +125,7 @@
<kotlin-stdlib.version>1.1.2</kotlin-stdlib.version>
<kotlin-reflect.version>1.1.2</kotlin-reflect.version>
<kotlinx.version>0.15</kotlinx.version>
<mockito-kotlin.version>1.5.0</mockito-kotlin.version>
</properties>
</project>

View File

@ -90,6 +90,11 @@
<artifactId>commons-lang3</artifactId>
<version>${commons-lang.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-text</artifactId>
<version>${commons-text.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
@ -366,6 +371,7 @@
<multiverse.version>0.7.0</multiverse.version>
<cglib.version>3.2.4</cglib.version>
<commons-lang.version>3.5</commons-lang.version>
<commons-text.version>1.1</commons-text.version>
<commons-beanutils.version>1.9.3</commons-beanutils.version>
<jasypt.version>1.9.2</jasypt.version>
<javatuples.version>1.2</javatuples.version>

View File

@ -0,0 +1,35 @@
package com.baeldung.commons.beanutils;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class CourseEntity {
private String name;
private List<String> codes;
private Map<String, Student> students = new HashMap<String, Student>();
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<String> getCodes() {
return codes;
}
public void setCodes(List<String> codes) {
this.codes = codes;
}
public void setStudent(String id, Student student) {
students.put(id, student);
}
public Student getStudent(String enrolledId) {
return students.get(enrolledId);
}
}

View File

@ -3,32 +3,38 @@ package com.baeldung.commons.beanutils;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.PropertyUtils;
public class CourseService {
public static void setValues(Course course, String name, List<String> codes)
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
// Setting the simple properties
PropertyUtils.setSimpleProperty(course, "name", name);
PropertyUtils.setSimpleProperty(course, "codes", codes);
}
public static void setIndexedValue(Course course, int codeIndex, String code)
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
// Setting the indexed properties
PropertyUtils.setIndexedProperty(course, "codes[" + codeIndex + "]", code);
}
public static void setMappedValue(Course course, String enrollId, Student student)
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
// Setting the mapped properties
PropertyUtils.setMappedProperty(course, "enrolledStudent(" + enrollId + ")", student);
}
public static String getNestedValue(Course course, String enrollId, String nestedPropertyName)
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
return (String) PropertyUtils.getNestedProperty(
course, "enrolledStudent(" + enrollId + ")." + nestedPropertyName);
}
public static void copyProperties(Course course, CourseEntity courseEntity)
throws IllegalAccessException, InvocationTargetException {
BeanUtils.copyProperties(course, courseEntity);
}
}

View File

@ -8,31 +8,46 @@ import org.junit.Assert;
import org.junit.Test;
public class CourseServiceTest {
@Test
public void givenCourse_whenSetValuesUsingPropertyUtil_thenReturnSetValues()
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
Course course = new Course();
String name = "Computer Science";
List<String> codes = Arrays.asList("CS", "CS01");
CourseService.setValues(course, name, codes);
Assert.assertEquals(name, course.getName());
Assert.assertEquals(2, course.getCodes().size());
Assert.assertEquals("CS", course.getCodes().get(0));
CourseService.setIndexedValue(course, 1, "CS02");
Assert.assertEquals("CS02", course.getCodes().get(1));
Student student = new Student();
String studentName = "Joe";
student.setName(studentName);
CourseService.setMappedValue(course, "ST-1", student);
Assert.assertEquals(student, course.getEnrolledStudent("ST-1"));
String accessedStudentName = CourseService.getNestedValue(course, "ST-1", "name");
Assert.assertEquals(studentName, accessedStudentName);
}
@Test
public void givenCopyProperties_whenCopyCourseToCourseEntity_thenCopyPropertyWithSameName()
throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
Course course = new Course();
course.setName("Computer Science");
course.setCodes(Arrays.asList("CS"));
course.setEnrolledStudent("ST-1", new Student());
CourseEntity courseEntity = new CourseEntity();
CourseService.copyProperties(course, courseEntity);
Assert.assertEquals(course.getName(), courseEntity.getName());
Assert.assertEquals(course.getCodes(), courseEntity.getCodes());
Assert.assertNull(courseEntity.getStudent("ST-1"));
}
}

View File

@ -0,0 +1,18 @@
package com.baeldung.text;
import org.apache.commons.text.diff.EditScript;
import org.apache.commons.text.diff.StringsComparator;
import org.junit.Assert;
import org.junit.Test;
public class DiffTest {
@Test
public void whenEditScript_thenCorrect() {
StringsComparator cmp = new StringsComparator("ABCFGH", "BCDEFG");
EditScript<Character> script = cmp.getScript();
int mod = script.getModifications();
Assert.assertEquals(4, mod);
}
}

View File

@ -0,0 +1,25 @@
package com.baeldung.text;
import org.apache.commons.text.similarity.LongestCommonSubsequence;
import org.apache.commons.text.similarity.LongestCommonSubsequenceDistance;
import org.junit.Assert;
import org.junit.Test;
public class LongestCommonSubsequenceTest {
@Test
public void whenCompare_thenCorrect() {
LongestCommonSubsequence lcs = new LongestCommonSubsequence();
int countLcs = lcs.apply("New York", "New Hampshire");
Assert.assertEquals(5, countLcs);
}
@Test
public void whenCalculateDistance_thenCorrect() {
LongestCommonSubsequenceDistance lcsd = new LongestCommonSubsequenceDistance();
int countLcsd = lcsd.apply("New York", "New Hampshire");
Assert.assertEquals(11, countLcsd);
}
}

View File

@ -0,0 +1,24 @@
package com.baeldung.text;
import org.apache.commons.text.StrBuilder;
import org.junit.Assert;
import org.junit.Test;
public class StrBuilderTest {
@Test
public void whenReplaced_thenCorrect() {
StrBuilder strBuilder = new StrBuilder("example StrBuilder!");
strBuilder.replaceAll("example", "new");
Assert.assertEquals(new StrBuilder("new StrBuilder!"), strBuilder);
}
@Test
public void whenCleared_thenEmpty() {
StrBuilder strBuilder = new StrBuilder("example StrBuilder!");
strBuilder.clear();
Assert.assertEquals(new StrBuilder(""), strBuilder);
}
}

View File

@ -0,0 +1,23 @@
package com.baeldung.text;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.text.StrSubstitutor;
import org.junit.Assert;
import org.junit.Test;
public class StrSubstitutorTest {
@Test
public void whenSubstituted_thenCorrect() {
Map<String, String> substitutes = new HashMap<>();
substitutes.put("name", "John");
substitutes.put("college", "University of Stanford");
String templateString = "My name is ${name} and I am a student at the ${college}.";
StrSubstitutor sub = new StrSubstitutor(substitutes);
String result = sub.replace(templateString);
Assert.assertEquals("My name is John and I am a student at the University of Stanford.", result);
}
}

View File

@ -0,0 +1,16 @@
package com.baeldung.text;
import org.apache.commons.text.translate.UnicodeEscaper;
import org.junit.Assert;
import org.junit.Test;
public class UnicodeEscaperTest {
@Test
public void whenTranslate_thenCorrect() {
UnicodeEscaper ue = UnicodeEscaper.above(0);
String result = ue.translate("ABCD");
Assert.assertEquals("\\u0041\\u0042\\u0043\\u0044", result);
}
}

View File

@ -0,0 +1,23 @@
package com.baeldung.text;
import org.apache.commons.text.WordUtils;
import org.junit.Assert;
import org.junit.Test;
public class WordUtilsTest {
@Test
public void whenCapitalized_thenCorrect() {
String toBeCapitalized = "to be capitalized!";
String result = WordUtils.capitalize(toBeCapitalized);
Assert.assertEquals("To Be Capitalized!", result);
}
@Test
public void whenContainsWords_thenCorrect() {
boolean containsWords = WordUtils.containsAllWords("String to search", "to", "search");
Assert.assertTrue(containsWords);
}
}

View File

@ -93,7 +93,7 @@
<module>log4j</module>
<module>log4j2</module>
<module>lombok</module>
<!-- <module>kotlin</module>-->
<module>mapstruct</module>
<module>metrics</module>
<module>mesos-marathon</module>
@ -121,7 +121,7 @@
<module>selenium-junit-testng</module>
<module>solr</module>
<module>spark-java</module>
<module>spring-5</module>
<!-- <module>spring-5</module>-->
<module>spring-5-mvc</module>
<module>spring-akka</module>
<module>spring-amqp</module>
@ -140,7 +140,6 @@
<module>spring-data-couchbase-2</module>
<module>spring-data-dynamodb</module>
<module>spring-data-elasticsearch</module>
<module>spring-data-javaslang</module>
<module>spring-data-mongodb</module>
<module>spring-data-neo4j</module>
<module>spring-data-redis</module>
@ -226,6 +225,7 @@
<module>spring-drools</module>
<module>drools</module>
<module>liquibase</module>
<module>spring-boot-property-exp</module>
</modules>
<dependencies>

View File

@ -39,6 +39,11 @@
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.projectreactor</groupId>
<artifactId>reactor-spring</artifactId>
<version>1.0.1.RELEASE</version>
</dependency>
<!-- utils -->
<dependency>

View File

@ -0,0 +1,86 @@
package com.baeldung.web.reactive.client;
import org.reactivestreams.Publisher;
import org.reactivestreams.Subscriber;
import org.springframework.http.*;
import org.springframework.http.client.reactive.ClientHttpRequest;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.reactive.function.BodyInserter;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.core.publisher.Mono;
import java.net.URI;
import java.nio.charset.Charset;
import java.time.ZonedDateTime;
import java.util.Collections;
@RestController
public class WebClientController {
@ResponseStatus(HttpStatus.OK)
@GetMapping("/resource")
public void getResource() {
}
public void demonstrateWebClient() {
// request
WebClient.UriSpec<WebClient.RequestBodySpec> request1 = createWebClientWithServerURLAndDefaultValues().method(HttpMethod.POST);
WebClient.UriSpec<WebClient.RequestBodySpec> request2 = createWebClientWithServerURLAndDefaultValues().post();
// request body specifications
WebClient.RequestBodySpec uri1 = createWebClientWithServerURLAndDefaultValues().method(HttpMethod.POST).uri("/resource");
WebClient.RequestBodySpec uri2 = createWebClientWithServerURLAndDefaultValues().post().uri(URI.create("/resource"));
// request header specification
WebClient.RequestHeadersSpec<?> requestSpec1 = uri1.body(BodyInserters.fromPublisher(Mono.just("data"), String.class));
WebClient.RequestHeadersSpec<?> requestSpec2 = uri2.body(BodyInserters.fromObject("data"));
// inserters
BodyInserter<Publisher<String>, ReactiveHttpOutputMessage> inserter1 = BodyInserters
.fromPublisher(Subscriber::onComplete, String.class);
LinkedMultiValueMap<String, String> map = new LinkedMultiValueMap<>();
map.add("key1", "value1");
map.add("key2", "value2");
BodyInserter<MultiValueMap<String, ?>, ClientHttpRequest> inserter2 = BodyInserters.fromMultipartData(map);
BodyInserter<String, ReactiveHttpOutputMessage> inserter3 = BodyInserters.fromObject("body");
// responses
WebClient.ResponseSpec response1 = uri1
.body(inserter3)
.header(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.accept(MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML)
.acceptCharset(Charset.forName("UTF-8"))
.ifNoneMatch("*")
.ifModifiedSince(ZonedDateTime.now())
.retrieve();
WebClient.ResponseSpec response2 = requestSpec2.retrieve();
}
private WebClient createWebClient() {
return WebClient.create();
}
private WebClient createWebClientWithServerURL() {
return WebClient.create("http://localhost:8081");
}
private WebClient createWebClientWithServerURLAndDefaultValues() {
return WebClient
.builder()
.baseUrl("http://localhost:8081")
.defaultCookie("cookieKey", "cookieValue")
.defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.defaultUriVariables(Collections.singletonMap("url", "http://localhost:8080"))
.build();
}
}

View File

@ -0,0 +1,58 @@
package com.baeldung.web.client;
import com.baeldung.Spring5Application;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.web.server.LocalServerPort;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.reactive.server.WebTestClient;
import org.springframework.web.reactive.function.server.RequestPredicates;
import org.springframework.web.reactive.function.server.RouterFunction;
import org.springframework.web.reactive.function.server.RouterFunctions;
import org.springframework.web.reactive.function.server.ServerResponse;
import org.springframework.web.server.WebHandler;
import reactor.core.publisher.Mono;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = Spring5Application.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class WebTestClientTest {
@LocalServerPort
private int port;
private final RouterFunction ROUTER_FUNCTION = RouterFunctions.route(
RequestPredicates.GET("/resource"),
request -> ServerResponse.ok().build()
);
private final WebHandler WEB_HANDLER = exchange -> Mono.empty();
@Test
public void testWebTestClientWithServerWebHandler() {
WebTestClient.bindToWebHandler(WEB_HANDLER).build();
}
@Test
public void testWebTestClientWithRouterFunction() {
WebTestClient
.bindToRouterFunction(ROUTER_FUNCTION)
.build().get().uri("/resource")
.exchange()
.expectStatus().isOk()
.expectBody().isEmpty();
}
@Test
public void testWebTestClientWithServerURL() {
WebTestClient
.bindToServer()
.baseUrl("http://localhost:" + port)
.build()
.get()
.uri("/resource")
.exchange()
.expectStatus().is4xxClientError()
.expectBody();
}
}

View File

@ -0,0 +1,19 @@
package com.baeldung.contexts;
public class Greeting {
private String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
@Override
public String toString() {
return "Greeting [message=" + message + "]";
}
}

View File

@ -0,0 +1,35 @@
package com.baeldung.contexts.config;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
@Configuration
public class ApplicationInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
rootContext.register(RootApplicationConfig.class);
servletContext.addListener(new ContextLoaderListener(rootContext));
AnnotationConfigWebApplicationContext normalWebAppContext = new AnnotationConfigWebApplicationContext();
normalWebAppContext.register(NormalWebAppConfig.class);
ServletRegistration.Dynamic normal = servletContext.addServlet("normal-webapp", new DispatcherServlet(normalWebAppContext));
normal.setLoadOnStartup(1);
normal.addMapping("/api/*");
AnnotationConfigWebApplicationContext secureWebAppContext = new AnnotationConfigWebApplicationContext();
secureWebAppContext.register(SecureWebAppConfig.class);
ServletRegistration.Dynamic secure = servletContext.addServlet("secure-webapp", new DispatcherServlet(secureWebAppContext));
secure.setLoadOnStartup(1);
secure.addMapping("/s/api/*");
}
}

View File

@ -0,0 +1,25 @@
package com.baeldung.contexts.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "com.baeldung.contexts.normal" })
public class NormalWebAppConfig extends WebMvcConfigurerAdapter {
@Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/view/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
return resolver;
}
}

View File

@ -0,0 +1,19 @@
package com.baeldung.contexts.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import com.baeldung.contexts.Greeting;
@Configuration
@ComponentScan(basePackages = { "com.baeldung.contexts.services" })
public class RootApplicationConfig {
@Bean
public Greeting greeting() {
Greeting greeting = new Greeting();
greeting.setMessage("Hello World !!");
return greeting;
}
}

View File

@ -0,0 +1,25 @@
package com.baeldung.contexts.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "com.baeldung.contexts.secure" })
public class SecureWebAppConfig extends WebMvcConfigurerAdapter {
@Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/secure/view/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
return resolver;
}
}

View File

@ -0,0 +1,41 @@
package com.baeldung.contexts.normal;
import java.util.Arrays;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.context.ContextLoader;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.servlet.ModelAndView;
import com.baeldung.contexts.services.ApplicationContextUtilService;
import com.baeldung.contexts.services.GreeterService;
@Controller
public class HelloWorldController {
@Autowired
WebApplicationContext webApplicationContext;
@Autowired
private GreeterService greeterService;
private void processContext() {
WebApplicationContext rootContext = ContextLoader.getCurrentWebApplicationContext();
System.out.println("root context : " + rootContext);
System.out.println("root context Beans: " + Arrays.asList(rootContext.getBeanDefinitionNames()));
System.out.println("context : " + webApplicationContext);
System.out.println("context Beans: " + Arrays.asList(webApplicationContext.getBeanDefinitionNames()));
}
@RequestMapping(path = "/welcome")
public ModelAndView helloWorld() {
processContext();
String message = "<br><div style='text-align:center;'>" + "<h3> " + greeterService.greet() + "</h3></div>";
return new ModelAndView("welcome", "message", message);
}
}

View File

@ -0,0 +1,49 @@
package com.baeldung.contexts.secure;
import java.util.Arrays;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.context.ContextLoader;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.servlet.ModelAndView;
import com.baeldung.contexts.services.ApplicationContextUtilService;
import com.baeldung.contexts.services.GreeterService;
@Controller
public class HelloWorldSecureController {
@Autowired
WebApplicationContext webApplicationContext;
@Autowired
private GreeterService greeterService;
@Autowired
@Qualifier("contextAware")
private ApplicationContextUtilService contextUtilService;
private void processContext() {
ApplicationContext context = contextUtilService.getApplicationContext();
System.out.println("application context : " + context);
System.out.println("application context Beans: " + Arrays.asList(context.getBeanDefinitionNames()));
WebApplicationContext rootContext = ContextLoader.getCurrentWebApplicationContext();
System.out.println("context : " + rootContext);
System.out.println("context Beans: " + Arrays.asList(rootContext.getBeanDefinitionNames()));
System.out.println("context : " + webApplicationContext);
System.out.println("context Beans: " + Arrays.asList(webApplicationContext.getBeanDefinitionNames()));
}
@RequestMapping(path = "/welcome")
public ModelAndView helloWorld() {
processContext();
String message = "<br><div style='text-align:center;'>" + "<h3> " + greeterService.greet() + "</h3></div>";
return new ModelAndView("welcome", "message", message);
}
}

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@ -0,0 +1,21 @@
package com.baeldung.contexts.services;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Service;
@Service(value="contextAware")
public class ApplicationContextUtilService implements ApplicationContextAware {
private ApplicationContext applicationContext;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}
public ApplicationContext getApplicationContext() {
return applicationContext;
}
}

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@ -0,0 +1,19 @@
package com.baeldung.contexts.services;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.baeldung.contexts.Greeting;
@Service
public class GreeterService {
@Resource
private Greeting greeting;
public String greet(){
return greeting.getMessage();
}
}

View File

@ -0,0 +1,5 @@
<html>
<body>
<h2>Hello World!</h2>
</body>
</html>

View File

@ -0,0 +1,19 @@
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.baeldung.contexts.normal" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>

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<?xml version = "1.0" encoding = "UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.baeldung.contexts.services" />
<bean id="greeting" class="ccom.baeldung.contexts.Greeting">
<property name="message" value="Hello World !!" />
</bean>
</beans>

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<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.baeldung.contexts.secure" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/secure/view/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>

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<html>
<head>
<title>Spring Web Contexts</title>
</head>
<body>
<br>
<div style="padding: 10px; border-radius: 10px; font-size: 30px; text-align: center;">
Secure Web Application : ${message}
</div>
</body>
</html>

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@ -0,0 +1,11 @@
<html>
<head>
<title>Spring Web Contexts</title>
</head>
<body>
<br>
<div style="padding: 10px; border-radius: 10px; font-size: 30px; text-align: center;">
Normal Web Application : ${message}
</div>
</body>
</html>

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@ -3,7 +3,48 @@
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<!-- load root application context -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/rootApplicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<!-- secure web app context -->
<servlet>
<servlet-name>secure-webapp</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/secure-webapp-servlet.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>secure-webapp</servlet-name>
<url-pattern>/s/api/*</url-pattern>
</servlet-mapping>
<!-- normal web app context -->
<servlet>
<servlet-name>normal-webapp</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>normal-webapp</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>test-mvc</servlet-name>
<servlet-class>

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<html>
<body>
<h2>Hello World!</h2>
</body>
</html>

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@ -0,0 +1,2 @@
## The Module Holds Sources for the Following Articles
- [Automatic Property Expansion with Spring Boot] (http://www.baeldung.com/property-expansion-spring-boot)

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<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>parent-modules</artifactId>
<groupId>com.baeldung</groupId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>spring-boot-property-exp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>spring-boot-property-exp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<modules>
<module>property-exp-default</module>
<module>property-exp-custom</module>
</modules>
</project>

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<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>spring-boot-property-exp</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>property-exp-custom</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>property-exp-custom</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<custom.property>Custom Property Value</custom.property>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>1.5.4.RELEASE</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>${basedir}/src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>**/application*.yml</include>
<include>**/application*.yaml</include>
<include>**/application*.properties</include>
</includes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<configuration>
<delimiters>
<delimiter>@</delimiter>
</delimiters>
<useDefaultDelimiters>true</useDefaultDelimiters>
</configuration>
</plugin>
</plugins>
</build>
</project>

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@ -0,0 +1,13 @@
package com.baeldung.propertyexpansion;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringBootPropertyExpansionApp {
public static void main(String[] args) {
SpringApplication.run(SpringBootPropertyExpansionApp.class, args);
}
}

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package com.baeldung.propertyexpansion.components;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
@Component
public class PropertyLoggerBean {
private static final Logger log = LoggerFactory.getLogger(PropertyLoggerBean.class);
@Value("${expanded.project.version}")
private String projectVersion;
@Value("${expanded.project.property}")
private String projectProperty;
@PostConstruct
public void printProperties() {
log.info("");
log.info("Properties logged in a bean:");
log.info("===========================================");
log.info("Project version : {}", projectVersion);
log.info("Project property : {}", projectProperty);
log.info("===========================================");
log.info("");
}
}

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expanded.project.version=${project.version}
expanded.project.property=${custom.property}

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@ -0,0 +1,21 @@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@#@@@@@########@@@@@@@@@@@@@@@@@@@@@@@@...@@@@@@@@@:..@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@#. @@@@@* *@@@@@@@@@@@@@@@@@@@@@ @@@@@@@@@. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@#o @@@@@* @@@@@* @@@:*.*@@@@@@@: *8@@@ @@@@&:.#@. @o**@@@@**:@o*o@@:.:@@@@@:.o#@&*:@@@@
@@@@@@@@@@@@* @@@@@* 8888 8@ @@@8 #@o 8@# .@ @@* :. @* @@@@ @. : &@ ** .@@@@
@@@@@@@@@@. @ o@@@@@* *@@@o::& .* 8@@@@. @@ 8@@@@. @* @@@@ @. @@@& * @@@@# .@@@@
@@@@@@@@@& @ @@@@@@* @@@@@@ 8 @@@@ .. o&&&&&&& @@ #@@@@. @* @@@@ @. @@@# * @@@@@ .@@@@
@@@@@@@@@ @@o @@@@@@@* oooo* 8 @@@& @* @@@ # 88. 88. *& o#: @. @@@# *@ &#& .@@@@
@@@@@@@@# @@@8 @@@@@@@* .*@@@#. *@@ @@@& :#@@@o .@@: *&@8 @o o@@: @. @@@# *@@#. :8# .@@@@
@@@@@@@@@ @@@@ &@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@# o@@@@ @@@@@
@@@@@& &@@@@ 8@@@@@@@@@8&8@@@@@#8#@@@o8@#&@@o&@@@&@@8@@&@@@@88@@8#@8&@@##@@@@@@#8@@#8@@88@@@@@ *@@@@@@@
@@@# #@@@@#. @@@@@@@@@@@@@8@@8#o@&#@@@@o.@o*@@*.@@@.@&:8o8*@@@8&@@#@@@8@@@@8@#@@@8&@@@@@@#@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
These values are expanded in banner.txt
==========================================================
expanded.project.version value is ${expanded.project.version}
expanded.project.property value is ${expanded.project.property}
==========================================================

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buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.5.2.RELEASE")
}
}
apply plugin: 'java'
apply plugin: 'maven'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
group = 'com.baeldung'
version = '0.0.1-SNAPSHOT'
description = """spring-boot"""
sourceCompatibility = 1.8
targetCompatibility = 1.8
tasks.withType(JavaCompile) {
options.encoding = 'UTF-8'
}
repositories {
mavenCentral()
}
import org.apache.tools.ant.filters.ReplaceTokens
processResources {
with copySpec {
from 'src/main/resources'
include '**/application*.yml'
include '**/application*.yaml'
include '**/application*.properties'
project.properties.findAll().each { prop ->
if (prop.value != null) {
filter(ReplaceTokens, tokens: [ (prop.key): prop.value])
filter(ReplaceTokens, tokens: [ ('project.' + prop.key): prop.value])
}
}
}
}
dependencies {
compile("org.springframework.boot:spring-boot-starter")
}

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@ -0,0 +1 @@
custom.property=Custom Gradle Property

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@ -0,0 +1,33 @@
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
</parent>
<groupId>com.baeldung</groupId>
<artifactId>property-exp-default</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>property-exp-default</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<custom.property>Custom Property Value</custom.property>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
</dependencies>
</project>

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