diff --git a/core-java-modules/core-java-io-2/README.md b/core-java-modules/core-java-io-2/README.md
index 3251d2153e..62461be0ff 100644
--- a/core-java-modules/core-java-io-2/README.md
+++ b/core-java-modules/core-java-io-2/README.md
@@ -11,5 +11,5 @@ This module contains articles about core Java input and output (IO)
- [List Files in a Directory in Java](https://www.baeldung.com/java-list-directory-files)
- [Java – Append Data to a File](https://www.baeldung.com/java-append-to-file)
- [How to Copy a File with Java](https://www.baeldung.com/java-copy-file)
-- [Create a Directory in Java](https://www.baeldung.com/java-create-directory)
+- [Create a Directory in Java](https://www.baeldung.com/java-create-directory)
- [[<-- Prev]](/core-java-modules/core-java-io)
diff --git a/core-java-modules/core-java-nio-2/hard_link.txt b/core-java-modules/core-java-nio-2/hard_link.txt
deleted file mode 100644
index 931a810b8d..0000000000
--- a/core-java-modules/core-java-nio-2/hard_link.txt
+++ /dev/null
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diff --git a/core-java-modules/core-java-nio-2/src/main/java/com/baeldung/lock/FileLocks.java b/core-java-modules/core-java-nio-2/src/main/java/com/baeldung/lock/FileLocks.java
new file mode 100644
index 0000000000..4b65221708
--- /dev/null
+++ b/core-java-modules/core-java-nio-2/src/main/java/com/baeldung/lock/FileLocks.java
@@ -0,0 +1,148 @@
+package com.baeldung.lock;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.nio.channels.FileLock;
+import java.nio.channels.NonReadableChannelException;
+import java.nio.channels.NonWritableChannelException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+
+public class FileLocks {
+
+ private static final Logger LOG = LoggerFactory.getLogger(FileLocks.class);
+
+ // Write locks
+
+ /**
+ * Trying to get an exclusive lock on a read-only FileChannel won't work.
+ */
+ static void getExclusiveLockFromInputStream() throws IOException {
+ Path path = Files.createTempFile("foo", "txt");
+ try (FileInputStream fis = new FileInputStream(path.toFile());
+ FileLock lock = fis.getChannel()
+ .lock()) {
+ LOG.debug("This won't happen");
+ } catch (NonWritableChannelException e) {
+ LOG.error("The channel obtained through a FileInputStream isn't writable. You can't obtain an exclusive lock on it!");
+ throw e;
+ }
+ }
+
+ /**
+ * Gets an exclusive lock from a RandomAccessFile. Works because the file is writable.
+ * @param from beginning of the locked region
+ * @param size how many bytes to lock
+ * @return A lock object representing the newly-acquired lock
+ * @throws IOException if there is a problem creating the temporary file
+ */
+ static FileLock getExclusiveLockFromRandomAccessFile(long from, long size) throws IOException {
+ Path path = Files.createTempFile("foo", "txt");
+ try (RandomAccessFile file = new RandomAccessFile(path.toFile(), "rw");
+ FileLock lock = file.getChannel()
+ .lock(from, size, false)) {
+ if (lock.isValid()) {
+ LOG.debug("This is a valid exclusive lock");
+ return lock;
+ }
+ return null;
+ } catch (Exception e) {
+ LOG.error(e.getMessage());
+ }
+ return null;
+ }
+
+ /**
+ * Acquires an exclusive lock on a file region.
+ * @param from beginning of the locked region
+ * @param size how many bytes to lock
+ * @return A lock object representing the newly-acquired lock
+ * @throws IOException if there is a problem creating the temporary file
+ */
+ static FileLock getExclusiveLockFromFileChannelOpen(long from, long size) throws IOException {
+ Path path = Files.createTempFile("foo", "txt");
+ try (FileChannel channel = FileChannel.open(path, StandardOpenOption.APPEND); FileLock lock = channel.lock(from, size, false)) {
+ String text = "Hello, world.";
+ ByteBuffer buffer = ByteBuffer.allocate(text.length() + System.lineSeparator()
+ .length());
+ buffer.put((text + System.lineSeparator()).getBytes(StandardCharsets.UTF_8));
+ buffer.flip();
+ while (buffer.hasRemaining()) {
+ channel.write(buffer, channel.size());
+ }
+ LOG.debug("This was written to the file");
+ Files.lines(path)
+ .forEach(LOG::debug);
+ return lock;
+ }
+ }
+
+ // Read locks
+
+ /**
+ * Trying to get a shared lock on a write-only FileChannel won't work.
+ */
+ static void getReadLockFromOutputStream() throws IOException {
+ Path path = Files.createTempFile("foo", "txt");
+ try (FileOutputStream fis = new FileOutputStream(path.toFile());
+ FileLock lock = fis.getChannel()
+ .lock(0, Long.MAX_VALUE, true)) {
+ LOG.debug("This won't happen");
+ } catch (NonReadableChannelException e) {
+ LOG.error("The channel obtained through a FileOutputStream isn't readable. " + "You can't obtain an shared lock on it!");
+ throw e;
+ }
+ }
+
+ /**
+ * Gets a lock from an InputStream.
+ * @param from beginning of the locked region
+ * @param size how many bytes to lock
+ * @return A lock object representing the newly-acquired lock
+ * @throws IOException if there is a problem creating the temporary file
+ */
+ static FileLock getReadLockFromInputStream(long from, long size) throws IOException {
+ Path path = Files.createTempFile("foo", "txt");
+ try (FileInputStream fis = new FileInputStream(path.toFile());
+ FileLock lock = fis.getChannel()
+ .lock(from, size, true)) {
+ if (lock.isValid()) {
+ LOG.debug("This is a valid shared lock");
+ return lock;
+ }
+ return null;
+ }
+ }
+
+ /**
+ * Gets an exclusive lock from a RandomAccessFile. Works because the file is readable.
+ * @param from beginning of the locked region
+ * @param size how many bytes to lock
+ * @return A lock object representing the newly-acquired lock
+ * @throws IOException if there is a problem creating the temporary file
+ */
+ static FileLock getReadLockFromRandomAccessFile(long from, long size) throws IOException {
+ Path path = Files.createTempFile("foo", "txt");
+ try (RandomAccessFile file = new RandomAccessFile(path.toFile(), "r"); // could also be "rw", but "r" is sufficient for reading
+ FileLock lock = file.getChannel()
+ .lock(from, size, true)) {
+ if (lock.isValid()) {
+ LOG.debug("This is a valid shared lock");
+ return lock;
+ }
+ } catch (Exception e) {
+ LOG.error(e.getMessage());
+ }
+ return null;
+ }
+
+}
diff --git a/core-java-modules/core-java-nio-2/src/test/java/com/baeldung/lock/FileLocksUnitTest.java b/core-java-modules/core-java-nio-2/src/test/java/com/baeldung/lock/FileLocksUnitTest.java
new file mode 100644
index 0000000000..1de988a87b
--- /dev/null
+++ b/core-java-modules/core-java-nio-2/src/test/java/com/baeldung/lock/FileLocksUnitTest.java
@@ -0,0 +1,54 @@
+package com.baeldung.lock;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.IOException;
+import java.nio.channels.FileLock;
+import java.nio.channels.NonReadableChannelException;
+import java.nio.channels.NonWritableChannelException;
+
+import org.junit.jupiter.api.Test;
+
+class FileLocksUnitTest {
+
+ @Test
+ void givenAnInputStream_whenGetWriteLock_thenThrowNonWritableChannelException() {
+ assertThrows(NonWritableChannelException.class, () -> FileLocks.getExclusiveLockFromInputStream());
+ }
+
+ @Test
+ void givenARandomAccessFileWithReadWriteAccess_whenGetWriteLock_thenLock() throws IOException {
+ FileLock lock = FileLocks.getExclusiveLockFromRandomAccessFile(0, 10);
+ assertNotNull(lock);
+ assertFalse(lock.isShared());
+ }
+
+ @Test
+ void givenAPath_whenGetExclusiveLock_thenLock() throws IOException {
+ FileLock lock = FileLocks.getExclusiveLockFromFileChannelOpen(0, 10);
+ assertNotNull(lock);
+ assertFalse(lock.isShared());
+ }
+
+ @Test
+ void givenAFileOutputStream_whenGetSharedLock_thenThrowNonReadableChannelException() {
+ assertThrows(NonReadableChannelException.class, FileLocks::getReadLockFromOutputStream);
+ }
+
+ @Test
+ void givenAnInputStream_whenGetSharedLock_thenLock() throws IOException {
+ FileLock lock = FileLocks.getReadLockFromInputStream(0, 10);
+ assertNotNull(lock);
+ assertTrue(lock.isShared());
+ }
+
+ @Test
+ void givenARandomAccessFile_whenGetSharedLock_thenLock() throws IOException {
+ FileLock lock = FileLocks.getReadLockFromRandomAccessFile(0, 10);
+ assertNotNull(lock);
+ assertTrue(lock.isShared());
+ }
+}
diff --git a/core-java-modules/core-java/README.md b/core-java-modules/core-java/README.md
index 80a48226e6..033d8032bf 100644
--- a/core-java-modules/core-java/README.md
+++ b/core-java-modules/core-java/README.md
@@ -11,7 +11,7 @@
- [Introduction to Java Serialization](http://www.baeldung.com/java-serialization)
- [Guide to UUID in Java](http://www.baeldung.com/java-uuid)
- [Creating a Java Compiler Plugin](http://www.baeldung.com/java-build-compiler-plugin)
-- [Quick Guide to Java Stack](http://www.baeldung.com/java-stack)
+- [Quick Guide to the Java Stack](http://www.baeldung.com/java-stack)
- [Compiling Java *.class Files with javac](http://www.baeldung.com/javac)
- [Introduction to Javadoc](http://www.baeldung.com/javadoc)
- [Guide to the Externalizable Interface in Java](http://www.baeldung.com/java-externalizable)
diff --git a/core-java-modules/core-java-date-operations-2/src/main/java/com/baeldung/timer/DatabaseMigrationTask.java b/core-java-modules/core-java/src/main/java/com/baeldung/timer/DatabaseMigrationTask.java
similarity index 100%
rename from core-java-modules/core-java-date-operations-2/src/main/java/com/baeldung/timer/DatabaseMigrationTask.java
rename to core-java-modules/core-java/src/main/java/com/baeldung/timer/DatabaseMigrationTask.java
diff --git a/core-java-modules/core-java-date-operations-2/src/main/java/com/baeldung/timer/NewsletterTask.java b/core-java-modules/core-java/src/main/java/com/baeldung/timer/NewsletterTask.java
similarity index 100%
rename from core-java-modules/core-java-date-operations-2/src/main/java/com/baeldung/timer/NewsletterTask.java
rename to core-java-modules/core-java/src/main/java/com/baeldung/timer/NewsletterTask.java
diff --git a/core-java-modules/core-java-date-operations-2/src/test/java/com/baeldung/timer/DatabaseMigrationTaskUnitTest.java b/core-java-modules/core-java/src/test/java/com/baeldung/timer/DatabaseMigrationTaskUnitTest.java
similarity index 100%
rename from core-java-modules/core-java-date-operations-2/src/test/java/com/baeldung/timer/DatabaseMigrationTaskUnitTest.java
rename to core-java-modules/core-java/src/test/java/com/baeldung/timer/DatabaseMigrationTaskUnitTest.java
diff --git a/core-java-modules/core-java/src/test/java/com/baeldung/JavaTimerLongRunningUnitTest.java b/core-java-modules/core-java/src/test/java/com/baeldung/timer/JavaTimerLongRunningUnitTest.java
similarity index 99%
rename from core-java-modules/core-java/src/test/java/com/baeldung/JavaTimerLongRunningUnitTest.java
rename to core-java-modules/core-java/src/test/java/com/baeldung/timer/JavaTimerLongRunningUnitTest.java
index 7063bafb1d..62afcd2f73 100644
--- a/core-java-modules/core-java/src/test/java/com/baeldung/JavaTimerLongRunningUnitTest.java
+++ b/core-java-modules/core-java/src/test/java/com/baeldung/timer/JavaTimerLongRunningUnitTest.java
@@ -1,4 +1,4 @@
-package com.baeldung;
+package com.baeldung.timer;
import org.junit.Test;
import org.slf4j.Logger;
diff --git a/core-java-modules/core-java-date-operations-2/src/test/java/com/baeldung/timer/NewsletterTaskUnitTest.java b/core-java-modules/core-java/src/test/java/com/baeldung/timer/NewsletterTaskUnitTest.java
similarity index 100%
rename from core-java-modules/core-java-date-operations-2/src/test/java/com/baeldung/timer/NewsletterTaskUnitTest.java
rename to core-java-modules/core-java/src/test/java/com/baeldung/timer/NewsletterTaskUnitTest.java
diff --git a/core-kotlin-modules/core-kotlin-2/README.md b/core-kotlin-modules/core-kotlin-2/README.md
index 3e607eb61b..d6d6b2f706 100644
--- a/core-kotlin-modules/core-kotlin-2/README.md
+++ b/core-kotlin-modules/core-kotlin-2/README.md
@@ -5,4 +5,5 @@ This module contains articles about Kotlin core features.
### Relevant articles:
- [Working with Dates in Kotlin](https://www.baeldung.com/kotlin-dates)
- [Kotlin Ternary Conditional Operator](https://www.baeldung.com/kotlin-ternary-operator)
+- [Sequences in Kotlin](https://www.baeldung.com/kotlin/sequences)
- [[<-- Prev]](/core-kotlin-modules/core-kotlin)
diff --git a/core-kotlin-modules/core-kotlin/README.md b/core-kotlin-modules/core-kotlin/README.md
index ae595bf18d..90caccf5c8 100644
--- a/core-kotlin-modules/core-kotlin/README.md
+++ b/core-kotlin-modules/core-kotlin/README.md
@@ -13,4 +13,7 @@ This module contains articles about Kotlin core features.
- [Implementing a Binary Tree in Kotlin](https://www.baeldung.com/kotlin-binary-tree)
- [JUnit 5 for Kotlin Developers](https://www.baeldung.com/junit-5-kotlin)
- [Converting Kotlin Data Class from JSON using GSON](https://www.baeldung.com/kotlin-json-convert-data-class)
+- [Fuel HTTP Library with Kotlin](https://www.baeldung.com/kotlin-fuel)
+- [Introduction to Kovenant Library for Kotlin](https://www.baeldung.com/kotlin-kovenant)
+- [Dependency Injection for Kotlin with Injekt](https://www.baeldung.com/kotlin-dependency-injection-with-injekt)
- [[More --> ]](/core-kotlin-modules/core-kotlin-2)
diff --git a/core-scala/README.md b/core-scala/README.md
index e6fc75d59e..13929ff721 100644
--- a/core-scala/README.md
+++ b/core-scala/README.md
@@ -5,3 +5,4 @@ This module contains articles about Scala's core features
### Relevant Articles:
- [Introduction to Scala](https://www.baeldung.com/scala-intro)
+- [Regular Expressions in Scala](https://www.baeldung.com/scala/regular-expressions)
diff --git a/core-scala/src/test/scala/com/baeldung/scala/HigherOrderFunctionsExamplesUnitTest.scala b/core-scala/src/test/scala/com/baeldung/scala/HigherOrderFunctionsExamplesUnitTest.scala
new file mode 100644
index 0000000000..cb43266a48
--- /dev/null
+++ b/core-scala/src/test/scala/com/baeldung/scala/HigherOrderFunctionsExamplesUnitTest.scala
@@ -0,0 +1,82 @@
+package com.baeldung.scala
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+
+class HigherOrderFunctionsExamplesUnitTest {
+
+ @Test
+ def whenCallingMapWithAnonymousFunction_thenTransformationIsApplied() = {
+ val expected = Seq("sir Alex Ferguson", "sir Bobby Charlton", "sir Frank Lampard")
+
+ val names = Seq("Alex Ferguson", "Bobby Charlton", "Frank Lampard")
+ val sirNames = names.map(name => "sir " + name)
+
+ assertEquals(expected, sirNames)
+ }
+
+ @Test
+ def whenCallingMapWithDefined_thenTransformationIsApplied() = {
+ val expected = Seq("sir Alex Ferguson", "sir Bobby Charlton", "sir Frank Lampard")
+
+ val names = Seq("Alex Ferguson", "Bobby Charlton", "Frank Lampard")
+
+ def prefixWithSir(name: String) = "sir " + name
+ val sirNames = names.map(prefixWithSir)
+
+ assertEquals(expected, sirNames)
+ }
+
+ @Test
+ def whenCallingFilter_thenUnecessaryElementsAreRemoved() = {
+ val expected = Seq("John O'Shea", "John Hartson")
+
+ val names = Seq("John O'Shea", "Aiden McGeady", "John Hartson")
+ val johns = names.filter(name => name.matches("^John .*"))
+
+ assertEquals(expected, johns)
+ }
+
+ @Test
+ def whenCallingReduce_thenProperSumIsCalculated() = {
+ val expected = 2750
+
+ val earnings = Seq(1000, 1300, 450)
+ val sumEarnings = earnings.reduce((acc, x) => acc + x)
+
+ assertEquals(expected, sumEarnings)
+ }
+
+ @Test
+ def whenCallingFold_thenNumberOfWordsShouldBeCalculated() = {
+ val expected = 6
+
+ val strings = Seq("bunch of words", "just me", "it")
+ val sumEarnings = strings.foldLeft(0)((acc, x) => acc + x.split(" ").size)
+
+ assertEquals(expected, sumEarnings)
+ }
+
+ @Test
+ def whenCallingOwnHigherOrderFunction_thenProperFunctionIsReturned() = {
+ def mathOperation(name: String): (Int, Int) => Int = (x: Int, y: Int) => {
+ name match {
+ case "addition" => x + y
+ case "multiplication" => x * y
+ case "division" => x/y
+ case "subtraction" => x - y
+ }
+ }
+
+ def add: (Int, Int) => Int = mathOperation("addition")
+ def mul: (Int, Int) => Int = mathOperation("multiplication")
+ def div: (Int, Int) => Int = mathOperation("division")
+ def sub: (Int, Int) => Int = mathOperation("subtraction")
+
+ assertEquals(15, add(10, 5))
+ assertEquals(50, mul(10, 5))
+ assertEquals(2, div(10, 5))
+ assertEquals(5, sub(10, 5))
+ }
+}
\ No newline at end of file
diff --git a/core-scala/src/test/scala/com/baeldung/scala/RegexUnitTest.scala b/core-scala/src/test/scala/com/baeldung/scala/regex/RegexUnitTest.scala
similarity index 98%
rename from core-scala/src/test/scala/com/baeldung/scala/RegexUnitTest.scala
rename to core-scala/src/test/scala/com/baeldung/scala/regex/RegexUnitTest.scala
index 94263d620a..27ed9e1172 100644
--- a/core-scala/src/test/scala/com/baeldung/scala/RegexUnitTest.scala
+++ b/core-scala/src/test/scala/com/baeldung/scala/regex/RegexUnitTest.scala
@@ -1,4 +1,4 @@
-package com.baeldung.scala
+package com.baeldung.scala.regex
import org.junit.Test
import org.junit.Assert.assertEquals
diff --git a/java-numbers-3/pom.xml b/java-numbers-3/pom.xml
index bf5fe9b0e7..495618885a 100644
--- a/java-numbers-3/pom.xml
+++ b/java-numbers-3/pom.xml
@@ -12,15 +12,32 @@
0.0.1-SNAPSHOT
../parent-java
-
+
-
+
it.unimi.dsi
dsiutils
${dsiutils.version}
+
+ io.vavr
+ vavr
+ ${vavr.version}
+
+
+ org.apache.commons
+ commons-lang3
+ ${commons.version}
+ test
+
+
+ org.assertj
+ assertj-core
+ ${assertj.version}
+ test
+
-
+
java-numbers-3
@@ -33,6 +50,9 @@
2.6.0
+ 0.10.2
+ 3.9
+ 3.6.1
diff --git a/java-numbers-3/src/test/java/com/baeldung/parsedouble/StringToDoubleParserUnitTest.java b/java-numbers-3/src/test/java/com/baeldung/parsedouble/StringToDoubleParserUnitTest.java
new file mode 100644
index 0000000000..b3dec3d14f
--- /dev/null
+++ b/java-numbers-3/src/test/java/com/baeldung/parsedouble/StringToDoubleParserUnitTest.java
@@ -0,0 +1,149 @@
+package com.baeldung.parsedouble;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Optional;
+
+import org.apache.commons.lang3.math.NumberUtils;
+import org.junit.Test;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.primitives.Doubles;
+
+import io.vavr.control.Try;
+
+public class StringToDoubleParserUnitTest {
+
+ @Test
+ public void givenNullValue_whenParseStringToDouble_thenDefaultNaNValueIsReturned() {
+ assertThat(parseStringToDouble(null)).isNaN();
+ }
+
+ @Test
+ public void givenEmptyStringValue_whenParseStringToDouble_thenDefaultNaNValueIsReturned() {
+ assertThat(parseStringToDouble("")).isNaN();
+ }
+
+ @Test
+ public void givenStringValue_whenParseStringToDouble_thenDoubleValueIsReturned() {
+ assertThat(parseStringToDouble("1")).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenStringValue_whenParseStringToDoubleWithDefault_thenDoubleValueIsReturned() {
+ assertThat(parseStringToDouble("1", 2.0d)).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenEmptyStringValue_whenParseStringToDoubleWithDefault_thenDefaultValueIsReturned() {
+ assertThat(parseStringToDouble("", 1.0d)).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenNullValue_whenParseStringToDoubleWithDefault_thenDefaultValueIsReturned() {
+ assertThat(parseStringToDouble(null, 1.0d)).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenStringValue_whenParseStringToOptionalDouble_thenOptionalValueIsReturned() {
+ assertThat(parseStringToOptionalDouble("1")).isEqualTo(Optional.of(1.0d));
+ }
+
+ @Test
+ public void givenNullValue_whenParseStringToOptionalDouble_thenOptionalValueIsEmpty() {
+ assertThat(parseStringToOptionalDouble(null)).isEqualTo(Optional.empty());
+ }
+
+ @Test
+ public void givenEmptyStringValue_whenParseStringToOptionalDouble_thenOptionalValueIsEmpty() {
+ assertThat(parseStringToOptionalDouble("")).isEqualTo(Optional.empty());
+ }
+
+ @Test
+ public void givenEmptyStringValue_whenParseStringToOptionalDouble_thenDefaulOptionalValueIsReturned() {
+ assertThat(parseStringToOptionalDouble("").orElse(1.0d)).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenNullValue_whenParseStringToOptionalDouble_thenDefaulOptionalValueIsReturned() {
+ assertThat(parseStringToOptionalDouble(null).orElse(1.0d)).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenStringValue_whenTryStringToDouble_thenDoubleValueIsReturned() {
+ assertThat(tryStringToDouble("1", 2.0d)).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenNullValue_whenTryStringToDoubleWithDefault_thenDoubleValueIsReturned() {
+ assertThat(tryStringToDouble(null, 2.0d)).isEqualTo(2.0d);
+ }
+
+ @Test
+ public void givenEmptyStringValue_whenTryStringToDoubleWithDefault_thenDoubleValueIsReturned() {
+ assertThat(tryStringToDouble("", 2.0d)).isEqualTo(2.0d);
+ }
+
+ @Test
+ public void givenTwoStringValues_whenTryParseFirstNonNull_thenDoubleValueIsReturned() {
+ assertThat(Doubles.tryParse(MoreObjects.firstNonNull("1.0", "2.0"))).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenNullStringValue_whenTryParseFirstNonNull_thenSecondDoubleValueIsReturned() {
+ assertThat(Doubles.tryParse(MoreObjects.firstNonNull(null, "2.0"))).isEqualTo(2.0d);
+ }
+
+ @Test
+ public void givenEmptyStringValue_whenTryParseFirstNonNull_thenNullIsReturned() {
+ assertThat(Doubles.tryParse(MoreObjects.firstNonNull("", "2.0"))).isEqualTo(null);
+ }
+
+ @Test
+ public void givenStringValue_whenToDouble_thenDoubleValueIsReturned() {
+ assertThat(NumberUtils.toDouble("1.0")).isEqualTo(1.0d);
+ }
+
+ @Test
+ public void givenNullValue_whenToDouble_thenLibraryDefaultDoubleValueIsReturned() {
+ String nullString = null;
+ assertThat(NumberUtils.toDouble(nullString)).isEqualTo(0.0d);
+ }
+
+ @Test
+ public void givenEmptyStringValue_whenToDouble_thenLibraryDefaultDoubleValueIsReturned() {
+ assertThat(NumberUtils.toDouble("")).isEqualTo(0.0d);
+ }
+
+ @Test
+ public void givenEmptyStringValue_whenToDoubleWithDefault_thenDoubleValueIsReturned() {
+ assertThat(NumberUtils.toDouble("", 2.0d)).isEqualTo(2.0d);
+ }
+
+ @Test
+ public void givenNullValue_whenToDoubleWithDefault_thenDoubleValueIsReturned() {
+ String nullString = null;
+ assertThat(NumberUtils.toDouble(nullString, 2.0d)).isEqualTo(2.0d);
+ }
+
+ @Test
+ public void givenStringValue_whenToDoubleWithDefault_thenDoubleValueIsReturned() {
+ assertThat(NumberUtils.toDouble("1.0", 2.0d)).isEqualTo(1.0d);
+ }
+
+ private static Optional parseStringToOptionalDouble(String value) {
+ return value == null || value.isEmpty() ? Optional.empty() : Optional.of(Double.valueOf(value));
+ }
+
+ private static double parseStringToDouble(String value) {
+ return value == null || value.isEmpty() ? Double.NaN : Double.parseDouble(value);
+ }
+
+ private static double parseStringToDouble(String value, double defaultValue) {
+ return value == null || value.isEmpty() ? defaultValue : Double.parseDouble(value);
+ }
+
+ private static double tryStringToDouble(String value, double defaultValue) {
+ return Try.of(() -> Double.parseDouble(value)).getOrElse(defaultValue);
+ }
+}
diff --git a/libraries-3/pom.xml b/libraries-3/pom.xml
index 66b48733f2..4bb1a4fba1 100644
--- a/libraries-3/pom.xml
+++ b/libraries-3/pom.xml
@@ -73,6 +73,28 @@
${cache2k.version}
pom
+
+ com.squareup.moshi
+ moshi
+ ${moshi.version}
+
+
+ com.squareup.moshi
+ moshi-adapters
+ ${moshi.version}
+
+
+
+ com.jcabi
+ jcabi-aspects
+ ${jcabi-aspects.version}
+
+
+ org.aspectj
+ aspectjrt
+ ${aspectjrt.version}
+ runtime
+
@@ -81,6 +103,36 @@
https://jitpack.io
+
+
+ libraries-3
+
+
+ com.jcabi
+ jcabi-maven-plugin
+ ${jcabi-maven-plugin.version}
+
+
+
+ ajc
+
+
+
+
+
+ org.aspectj
+ aspectjtools
+ ${aspectjtools.version}
+
+
+ org.aspectj
+ aspectjweaver
+ ${aspectjweaver.version}
+
+
+
+
+
1.78
@@ -93,5 +145,11 @@
0.43
2.7.2
1.2.3.Final
+ 1.9.2
+ 0.22.6
+ 1.9.2
+ 0.14.1
+ 1.9.2
+ 1.9.2
diff --git a/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelper.java b/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelper.java
index dc984e5f0b..cc646c9e17 100644
--- a/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelper.java
+++ b/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelper.java
@@ -4,38 +4,33 @@ import java.util.Objects;
import org.cache2k.Cache;
import org.cache2k.Cache2kBuilder;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
public class ProductHelper {
- final Logger LOGGER = LoggerFactory.getLogger(ProductHelper.class);
-
private Cache cachedDiscounts;
+ private int cacheMissCount = 0;
+
public ProductHelper() {
cachedDiscounts = Cache2kBuilder.of(String.class, Integer.class)
.name("discount")
.eternal(true)
.entryCapacity(100)
.build();
-
- initDiscountCache("Sports", 20);
- }
-
- public void initDiscountCache(String productType, Integer value) {
- cachedDiscounts.put(productType, value);
}
public Integer getDiscount(String productType) {
Integer discount = cachedDiscounts.get(productType);
if (Objects.isNull(discount)) {
- LOGGER.info("Discount for {} not found.", productType);
- discount = 0;
- } else {
- LOGGER.info("Discount for {} found.", productType);
+ cacheMissCount++;
+ discount = "Sports".equalsIgnoreCase(productType) ? 20 : 10;
+ cachedDiscounts.put(productType, discount);
}
return discount;
}
+ public int getCacheMissCount() {
+ return cacheMissCount;
+ }
+
}
diff --git a/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperUsingLoader.java b/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperUsingLoader.java
index 787a78cd36..7b2ac4caa1 100644
--- a/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperUsingLoader.java
+++ b/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperUsingLoader.java
@@ -1,6 +1,5 @@
package com.baeldung.cache2k;
-import java.util.Objects;
import java.util.concurrent.TimeUnit;
import org.cache2k.Cache;
@@ -14,28 +13,26 @@ public class ProductHelperUsingLoader {
private Cache cachedDiscounts;
+ private int cacheMissCount = 0;
+
public ProductHelperUsingLoader() {
cachedDiscounts = Cache2kBuilder.of(String.class, Integer.class)
.name("discount-loader")
- .eternal(false)
.expireAfterWrite(10, TimeUnit.MILLISECONDS)
.entryCapacity(100)
.loader((key) -> {
- LOGGER.info("Calculating discount for {}.", key);
+ cacheMissCount++;
return "Sports".equalsIgnoreCase(key) ? 20 : 10;
})
.build();
}
public Integer getDiscount(String productType) {
- Integer discount = cachedDiscounts.get(productType);
- if (Objects.isNull(discount)) {
- LOGGER.info("Discount for {} not found.", productType);
- discount = 0;
- } else {
- LOGGER.info("Discount for {} found.", productType);
- }
- return discount;
+ return cachedDiscounts.get(productType);
+ }
+
+ public int getCacheMissCount() {
+ return cacheMissCount;
}
}
diff --git a/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperWithEventListener.java b/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperWithEventListener.java
index 5b9eb28c68..90c6ee3adf 100644
--- a/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperWithEventListener.java
+++ b/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperWithEventListener.java
@@ -1,6 +1,5 @@
package com.baeldung.cache2k;
-import java.util.Objects;
import java.util.concurrent.TimeUnit;
import org.cache2k.Cache;
@@ -16,14 +15,15 @@ public class ProductHelperWithEventListener {
private Cache cachedDiscounts;
+ private int cacheMissCount = 0;
+
public ProductHelperWithEventListener() {
cachedDiscounts = Cache2kBuilder.of(String.class, Integer.class)
.name("discount-listener")
- .eternal(false)
.expireAfterWrite(10, TimeUnit.MILLISECONDS)
.entryCapacity(100)
.loader((key) -> {
- LOGGER.info("Calculating discount for {}.", key);
+ cacheMissCount++;
return "Sports".equalsIgnoreCase(key) ? 20 : 10;
})
.addListener(new CacheEntryCreatedListener() {
@@ -36,14 +36,11 @@ public class ProductHelperWithEventListener {
}
public Integer getDiscount(String productType) {
- Integer discount = cachedDiscounts.get(productType);
- if (Objects.isNull(discount)) {
- LOGGER.info("Discount for {} not found.", productType);
- discount = 0;
- } else {
- LOGGER.info("Discount for {} found.", productType);
- }
- return discount;
+ return cachedDiscounts.get(productType);
+ }
+
+ public int getCacheMissCount() {
+ return cacheMissCount;
}
}
diff --git a/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperWithExpiry.java b/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperWithExpiry.java
index b0bf8f90de..22b656fead 100644
--- a/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperWithExpiry.java
+++ b/libraries-3/src/main/java/com/baeldung/cache2k/ProductHelperWithExpiry.java
@@ -5,39 +5,34 @@ import java.util.concurrent.TimeUnit;
import org.cache2k.Cache;
import org.cache2k.Cache2kBuilder;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
public class ProductHelperWithExpiry {
- final Logger LOGGER = LoggerFactory.getLogger(ProductHelperWithExpiry.class);
-
private Cache cachedDiscounts;
+ private int cacheMissCount = 0;
+
public ProductHelperWithExpiry() {
cachedDiscounts = Cache2kBuilder.of(String.class, Integer.class)
.name("discount-expiry")
- .eternal(false)
.expireAfterWrite(5, TimeUnit.MILLISECONDS)
.entryCapacity(100)
.build();
- initDiscountCache("Sports", 20);
- }
-
- public void initDiscountCache(String productType, Integer value) {
- cachedDiscounts.put(productType, value);
}
public Integer getDiscount(String productType) {
Integer discount = cachedDiscounts.get(productType);
if (Objects.isNull(discount)) {
- LOGGER.info("Discount for {} not found.", productType);
- discount = 0;
- } else {
- LOGGER.info("Discount for {} found.", productType);
+ cacheMissCount++;
+ discount = "Sports".equalsIgnoreCase(productType) ? 20 : 10;
+ cachedDiscounts.put(productType, discount);
}
return discount;
}
+ public int getCacheMissCount() {
+ return cacheMissCount;
+ }
+
}
diff --git a/libraries-3/src/main/java/com/baeldung/jcabi/JcabiAspectJ.java b/libraries-3/src/main/java/com/baeldung/jcabi/JcabiAspectJ.java
new file mode 100644
index 0000000000..6bd345c59c
--- /dev/null
+++ b/libraries-3/src/main/java/com/baeldung/jcabi/JcabiAspectJ.java
@@ -0,0 +1,112 @@
+package com.baeldung.jcabi;
+
+
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+
+import com.jcabi.aspects.Async;
+import com.jcabi.aspects.Cacheable;
+import com.jcabi.aspects.LogExceptions;
+import com.jcabi.aspects.Loggable;
+import com.jcabi.aspects.Quietly;
+import com.jcabi.aspects.RetryOnFailure;
+import com.jcabi.aspects.UnitedThrow;
+
+public class JcabiAspectJ {
+
+ public static void main(String[] args) {
+ try {
+ displayFactorial(10);
+ getFactorial(10).get();
+
+ String result = cacheExchangeRates();
+ if (result != cacheExchangeRates()) {
+ System.out.println(result);
+ }
+
+ divideByZero();
+ } catch(Exception e) {
+ e.printStackTrace();
+ }
+
+ divideByZeroQuietly();
+ try {
+ processFile();
+ } catch(Exception e) {
+ e.printStackTrace();
+ }
+
+ }
+
+ @Loggable
+ @Async
+ public static void displayFactorial(int number) {
+ long result = factorial(number);
+ System.out.println(result);
+ }
+
+ @Loggable
+ @Async
+ public static Future getFactorial(int number) {
+ Future factorialFuture = CompletableFuture.supplyAsync(() -> factorial(number));
+ return factorialFuture;
+ }
+
+ /**
+ * Finds factorial of a number
+ * @param number
+ * @return
+ */
+ public static long factorial(int number) {
+ long result = 1;
+ for(int i=number;i>0;i--) {
+ result *= i;
+ }
+ return result;
+ }
+
+ @Loggable
+ @Cacheable(lifetime = 2, unit = TimeUnit.SECONDS)
+ public static String cacheExchangeRates() {
+ String result = null;
+ try {
+ URL exchangeRateUrl = new URL("https://api.exchangeratesapi.io/latest");
+ URLConnection con = exchangeRateUrl.openConnection();
+ BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
+ result = in.readLine();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ return result;
+ }
+
+ @LogExceptions
+ public static void divideByZero() {
+ int x = 1/0;
+ }
+
+ @RetryOnFailure(attempts = 2, types = {java.lang.NumberFormatException.class})
+ @Quietly
+ public static void divideByZeroQuietly() {
+ int x = 1/0;
+ }
+
+ @UnitedThrow(IllegalStateException.class)
+ public static void processFile() throws IOException, InterruptedException {
+ BufferedReader reader = new BufferedReader(new FileReader("baeldung.txt"));
+ reader.readLine();
+
+ Thread thread = new Thread();
+ thread.wait(2000);
+ }
+
+}
diff --git a/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperUnitTest.java b/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperUnitTest.java
index 69da2591dd..e9b495279a 100644
--- a/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperUnitTest.java
+++ b/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperUnitTest.java
@@ -6,12 +6,13 @@ import org.junit.Test;
public class ProductHelperUnitTest {
- ProductHelper productHelper = new ProductHelper();
-
@Test
- public void whenInvokedGetDiscount_thenGetItFromCache() {
+ public void whenInvokedGetDiscountTwice_thenGetItFromCache() {
+ ProductHelper productHelper = new ProductHelper();
+ assertTrue(productHelper.getCacheMissCount() == 0);
assertTrue(productHelper.getDiscount("Sports") == 20);
- assertTrue(productHelper.getDiscount("Electronics") == 0);
+ assertTrue(productHelper.getDiscount("Sports") == 20);
+ assertTrue(productHelper.getCacheMissCount() == 1);
}
}
diff --git a/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperUsingLoaderUnitTest.java b/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperUsingLoaderUnitTest.java
index 2656e75cab..3ad77aa2de 100644
--- a/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperUsingLoaderUnitTest.java
+++ b/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperUsingLoaderUnitTest.java
@@ -6,12 +6,16 @@ import org.junit.Test;
public class ProductHelperUsingLoaderUnitTest {
- ProductHelperUsingLoader productHelper = new ProductHelperUsingLoader();
-
@Test
- public void whenInvokedGetDiscount_thenPopulateCache() {
+ public void whenInvokedGetDiscount_thenPopulateCacheUsingLoader() {
+ ProductHelperUsingLoader productHelper = new ProductHelperUsingLoader();
+ assertTrue(productHelper.getCacheMissCount() == 0);
+
assertTrue(productHelper.getDiscount("Sports") == 20);
+ assertTrue(productHelper.getCacheMissCount() == 1);
+
assertTrue(productHelper.getDiscount("Electronics") == 10);
+ assertTrue(productHelper.getCacheMissCount() == 2);
}
}
diff --git a/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperWithEventListenerUnitTest.java b/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperWithEventListenerUnitTest.java
index 7bf08232f4..9aeb9f0552 100644
--- a/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperWithEventListenerUnitTest.java
+++ b/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperWithEventListenerUnitTest.java
@@ -6,10 +6,9 @@ import org.junit.Test;
public class ProductHelperWithEventListenerUnitTest {
- ProductHelperWithEventListener productHelper = new ProductHelperWithEventListener();
-
@Test
public void whenEntryAddedInCache_thenEventListenerCalled() {
+ ProductHelperWithEventListener productHelper = new ProductHelperWithEventListener();
assertTrue(productHelper.getDiscount("Sports") == 20);
}
diff --git a/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperWithExpiryUnitTest.java b/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperWithExpiryUnitTest.java
index 65feba2c70..a3303ca0aa 100644
--- a/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperWithExpiryUnitTest.java
+++ b/libraries-3/src/test/java/com/baeldung/cache2k/ProductHelperWithExpiryUnitTest.java
@@ -6,13 +6,17 @@ import org.junit.Test;
public class ProductHelperWithExpiryUnitTest {
- ProductHelperWithExpiry productHelper = new ProductHelperWithExpiry();
-
@Test
- public void whenInvokedGetDiscountForExpiredProduct_thenNoDiscount() throws InterruptedException {
+ public void whenInvokedGetDiscountAfterExpiration_thenDiscountCalculatedAgain() throws InterruptedException {
+ ProductHelperWithExpiry productHelper = new ProductHelperWithExpiry();
+ assertTrue(productHelper.getCacheMissCount() == 0);
assertTrue(productHelper.getDiscount("Sports") == 20);
+ assertTrue(productHelper.getCacheMissCount() == 1);
+
Thread.sleep(20);
- assertTrue(productHelper.getDiscount("Sports") == 0);
+
+ assertTrue(productHelper.getDiscount("Sports") == 20);
+ assertTrue(productHelper.getCacheMissCount() == 2);
}
}
diff --git a/libraries-3/src/test/java/com/baeldung/moshi/AlternativeAdapterUnitTest.java b/libraries-3/src/test/java/com/baeldung/moshi/AlternativeAdapterUnitTest.java
new file mode 100644
index 0000000000..63d80bfe58
--- /dev/null
+++ b/libraries-3/src/test/java/com/baeldung/moshi/AlternativeAdapterUnitTest.java
@@ -0,0 +1,105 @@
+package com.baeldung.moshi;
+
+import java.io.IOException;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.time.Instant;
+
+import com.squareup.moshi.FromJson;
+import com.squareup.moshi.JsonAdapter;
+import com.squareup.moshi.JsonQualifier;
+import com.squareup.moshi.Moshi;
+import com.squareup.moshi.ToJson;
+import org.apache.commons.lang3.builder.ToStringBuilder;
+import org.junit.Test;
+
+public class AlternativeAdapterUnitTest {
+ @Test
+ public void whenSerializing_thenAlternativeAdapterUsed() {
+ Moshi moshi = new Moshi.Builder()
+ .add(new EpochMillisAdapter())
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ String json = jsonAdapter.toJson(new Post("Introduction to Moshi Json", "Baeldung", Instant.now()));
+ System.out.println(json);
+ }
+
+ @Test
+ public void whenDeserializing_thenAlternativeAdapterUsed() throws IOException {
+ Moshi moshi = new Moshi.Builder()
+ .add(new EpochMillisAdapter())
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ String json = "{\"author\":\"Baeldung\",\"posted\":1582095269204,\"title\":\"Introduction to Moshi Json\"}";
+ Post post = jsonAdapter.fromJson(json);
+ System.out.println(post);
+
+ }
+
+ public static class Post {
+ String title;
+ String author;
+ @EpochMillis Instant posted;
+
+ public Post() {
+ }
+
+ public Post(String title, String author, Instant posted) {
+ this.title = title;
+ this.author = author;
+ this.posted = posted;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ }
+
+ public String getAuthor() {
+ return author;
+ }
+
+ public void setAuthor(String author) {
+ this.author = author;
+ }
+
+ public Instant getPosted() {
+ return posted;
+ }
+
+ public void setPosted(Instant posted) {
+ this.posted = posted;
+ }
+
+ @Override
+ public String toString() {
+ return new ToStringBuilder(this).append("title", title).append("author", author).append("posted", posted)
+ .toString();
+ }
+ }
+ @Retention(RetentionPolicy.RUNTIME)
+ @Target({ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD})
+ @JsonQualifier
+ public @interface EpochMillis {
+ }
+
+ public static class EpochMillisAdapter {
+ @ToJson
+ public Long toJson(@EpochMillis Instant input) {
+ return input.toEpochMilli();
+ }
+ @FromJson
+ @EpochMillis
+ public Instant fromJson(Long input) {
+ return Instant.ofEpochMilli(input);
+ }
+
+ }
+}
diff --git a/libraries-3/src/test/java/com/baeldung/moshi/ArrayUnitTest.java b/libraries-3/src/test/java/com/baeldung/moshi/ArrayUnitTest.java
new file mode 100644
index 0000000000..83bb2bb128
--- /dev/null
+++ b/libraries-3/src/test/java/com/baeldung/moshi/ArrayUnitTest.java
@@ -0,0 +1,36 @@
+package com.baeldung.moshi;
+
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.util.Arrays;
+import java.util.List;
+
+import com.squareup.moshi.JsonAdapter;
+import com.squareup.moshi.Moshi;
+import com.squareup.moshi.Types;
+import org.junit.Test;
+
+public class ArrayUnitTest {
+ @Test
+ public void whenSerializingList_thenJsonArrayProduced() {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ Type type = Types.newParameterizedType(List.class, String.class);
+ JsonAdapter> jsonAdapter = moshi.adapter(type);
+
+ String json = jsonAdapter.toJson(Arrays.asList("One", "Two", "Three"));
+ System.out.println(json);
+ }
+
+ @Test
+ public void whenDeserializingJsonArray_thenListProduced() throws IOException {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ Type type = Types.newParameterizedType(List.class, String.class);
+ JsonAdapter> jsonAdapter = moshi.adapter(type);
+
+ String json = "[\"One\",\"Two\",\"Three\"]";
+ List result = jsonAdapter.fromJson(json);
+ System.out.println(result);
+ }
+}
diff --git a/libraries-3/src/test/java/com/baeldung/moshi/ComplexAdapterUnitTest.java b/libraries-3/src/test/java/com/baeldung/moshi/ComplexAdapterUnitTest.java
new file mode 100644
index 0000000000..f0f8e9a95d
--- /dev/null
+++ b/libraries-3/src/test/java/com/baeldung/moshi/ComplexAdapterUnitTest.java
@@ -0,0 +1,94 @@
+package com.baeldung.moshi;
+
+import java.io.IOException;
+import java.time.LocalDate;
+import java.time.LocalTime;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+
+import com.squareup.moshi.FromJson;
+import com.squareup.moshi.JsonAdapter;
+import com.squareup.moshi.Moshi;
+import com.squareup.moshi.ToJson;
+import org.junit.Test;
+
+public class ComplexAdapterUnitTest {
+ @Test
+ public void whenSerializing_thenCorrectJsonProduced() {
+ Moshi moshi = new Moshi.Builder()
+ .add(new JsonDateTimeAdapter())
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(ZonedDateTime.class);
+
+ String json = jsonAdapter.toJson(ZonedDateTime.now());
+ System.out.println(json);
+ }
+
+ @Test
+ public void whenDeserializing_thenCorrectJsonConsumed() throws IOException {
+ Moshi moshi = new Moshi.Builder()
+ .add(new JsonDateTimeAdapter())
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(ZonedDateTime.class);
+
+ String json = "{\"date\":\"2020-02-17\",\"time\":\"07:53:27.064\",\"timezone\":\"Europe/London\"}";
+ ZonedDateTime now = jsonAdapter.fromJson(json);
+ System.out.println(now);
+
+ }
+
+ public static class JsonDateTimeAdapter {
+ @ToJson
+ public JsonDateTime toJson(ZonedDateTime input) {
+ String date = input.toLocalDate().toString();
+ String time = input.toLocalTime().toString();
+ String timezone = input.getZone().toString();
+ return new JsonDateTime(date, time, timezone);
+ }
+ @FromJson
+ public ZonedDateTime fromJson(JsonDateTime input) {
+ LocalDate date = LocalDate.parse(input.getDate());
+ LocalTime time = LocalTime.parse(input.getTime());
+ ZoneId timezone = ZoneId.of(input.getTimezone());
+ return ZonedDateTime.of(date, time, timezone);
+ }
+ }
+ public static class JsonDateTime {
+ private String date;
+ private String time;
+ private String timezone;
+
+ public JsonDateTime() {
+ }
+
+ public JsonDateTime(String date, String time, String timezone) {
+ this.date = date;
+ this.time = time;
+ this.timezone = timezone;
+ }
+
+ public String getDate() {
+ return date;
+ }
+
+ public void setDate(String date) {
+ this.date = date;
+ }
+
+ public String getTime() {
+ return time;
+ }
+
+ public void setTime(String time) {
+ this.time = time;
+ }
+
+ public String getTimezone() {
+ return timezone;
+ }
+
+ public void setTimezone(String timezone) {
+ this.timezone = timezone;
+ }
+ }
+}
diff --git a/libraries-3/src/test/java/com/baeldung/moshi/DefaultUnitTest.java b/libraries-3/src/test/java/com/baeldung/moshi/DefaultUnitTest.java
new file mode 100644
index 0000000000..0b4ecc23a5
--- /dev/null
+++ b/libraries-3/src/test/java/com/baeldung/moshi/DefaultUnitTest.java
@@ -0,0 +1,68 @@
+package com.baeldung.moshi;
+
+import java.io.IOException;
+import java.time.Instant;
+
+import com.squareup.moshi.JsonAdapter;
+import com.squareup.moshi.Moshi;
+import org.apache.commons.lang3.builder.ToStringBuilder;
+import org.junit.Test;
+
+public class DefaultUnitTest {
+
+ @Test
+ public void whenDeserializing_thenFieldsGetDefaultValues() throws IOException {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ String json = "{\"title\":\"My Post\"}";
+ Post post = jsonAdapter.fromJson(json);
+ System.out.println(post);
+ }
+ public static class Post {
+ private String title;
+ private String author;
+ private String posted;
+
+ public Post() {
+ posted = Instant.now().toString();
+ }
+
+ public Post(String title, String author, String posted) {
+ this.title = title;
+ this.author = author;
+ this.posted = posted;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ }
+
+ public String getAuthor() {
+ return author;
+ }
+
+ public void setAuthor(String author) {
+ this.author = author;
+ }
+
+ public String getPosted() {
+ return posted;
+ }
+
+ public void setPosted(String posted) {
+ this.posted = posted;
+ }
+
+ @Override
+ public String toString() {
+ return new ToStringBuilder(this).append("title", title).append("author", author).append("posted", posted)
+ .toString();
+ }
+ }
+}
diff --git a/libraries-3/src/test/java/com/baeldung/moshi/PrimitiveUnitTest.java b/libraries-3/src/test/java/com/baeldung/moshi/PrimitiveUnitTest.java
new file mode 100644
index 0000000000..e26e93ba8c
--- /dev/null
+++ b/libraries-3/src/test/java/com/baeldung/moshi/PrimitiveUnitTest.java
@@ -0,0 +1,77 @@
+package com.baeldung.moshi;
+
+import java.io.IOException;
+
+import com.squareup.moshi.JsonAdapter;
+import com.squareup.moshi.Moshi;
+import org.apache.commons.lang3.builder.ToStringBuilder;
+import org.junit.Test;
+
+public class PrimitiveUnitTest {
+ @Test
+ public void whenSerializing_thenCorrectJsonProduced() {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ Post post = new Post("My Post", "Baeldung", "This is my post");
+ String json = jsonAdapter.toJson(post);
+ System.out.println(json);
+ }
+
+ @Test
+ public void whenDeserializing_thenCorrectJsonConsumed() throws IOException {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ String json = "{\"author\":\"Baeldung\",\"text\":\"This is my post\",\"title\":\"My Post\"}";
+ Post post = jsonAdapter.fromJson(json);
+ System.out.println(post);
+ }
+
+ public static class Post {
+ private String title;
+ private String author;
+ private String text;
+
+ public Post() {
+ }
+
+ public Post(String title, String author, String text) {
+ this.title = title;
+ this.author = author;
+ this.text = text;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ }
+
+ public String getAuthor() {
+ return author;
+ }
+
+ public void setAuthor(String author) {
+ this.author = author;
+ }
+
+ public String getText() {
+ return text;
+ }
+
+ public void setText(String text) {
+ this.text = text;
+ }
+
+ @Override
+ public String toString() {
+ return new ToStringBuilder(this).append("title", title).append("author", author).append("text", text)
+ .toString();
+ }
+ }
+}
diff --git a/libraries-3/src/test/java/com/baeldung/moshi/RenameUnitTest.java b/libraries-3/src/test/java/com/baeldung/moshi/RenameUnitTest.java
new file mode 100644
index 0000000000..2118538a19
--- /dev/null
+++ b/libraries-3/src/test/java/com/baeldung/moshi/RenameUnitTest.java
@@ -0,0 +1,68 @@
+package com.baeldung.moshi;
+
+import java.io.IOException;
+
+import com.squareup.moshi.Json;
+import com.squareup.moshi.JsonAdapter;
+import com.squareup.moshi.Moshi;
+import org.apache.commons.lang3.builder.ToStringBuilder;
+import org.junit.jupiter.api.Test;
+
+public class RenameUnitTest {
+
+ @Test
+ public void whenSerializing_thenFieldsGetRenamed() {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ Post post = new Post("My Post", "Baeldung");
+ String json = jsonAdapter.toJson(post);
+ System.out.println(json);
+ }
+
+ @Test
+ public void whenSerializing_thenRenamedFieldsGetConsumed() throws IOException {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ String json = "{\"authored_by\":\"Baeldung\",\"title\":\"My Post\"}";
+ Post post = jsonAdapter.fromJson(json);
+ System.out.println(post);
+ }
+ public static class Post {
+ private String title;
+ @Json(name = "authored_by")
+ private String author;
+
+ public Post() {
+ }
+
+ public Post(String title, String author) {
+ this.title = title;
+ this.author = author;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ }
+
+ public String getAuthor() {
+ return author;
+ }
+
+ public void setAuthor(String author) {
+ this.author = author;
+ }
+
+ @Override
+ public String toString() {
+ return new ToStringBuilder(this).append("title", title).append("author", author).toString();
+ }
+ }
+}
diff --git a/libraries-3/src/test/java/com/baeldung/moshi/SimpleAdapterUnitTest.java b/libraries-3/src/test/java/com/baeldung/moshi/SimpleAdapterUnitTest.java
new file mode 100644
index 0000000000..e0be2f8a66
--- /dev/null
+++ b/libraries-3/src/test/java/com/baeldung/moshi/SimpleAdapterUnitTest.java
@@ -0,0 +1,129 @@
+package com.baeldung.moshi;
+
+import java.io.IOException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import com.squareup.moshi.FromJson;
+import com.squareup.moshi.JsonAdapter;
+import com.squareup.moshi.Moshi;
+import com.squareup.moshi.ToJson;
+import org.apache.commons.lang3.builder.ToStringBuilder;
+import org.junit.Test;
+
+public class SimpleAdapterUnitTest {
+ @Test
+ public void whenSerializing_thenAdapterUsed() {
+ Moshi moshi = new Moshi.Builder()
+ .add(new AuthorAdapter())
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ Post post = new Post("My Post", new Author("Baeldung", "baeldung@example.com"), "This is my post");
+ String json = jsonAdapter.toJson(post);
+ System.out.println(json);
+ }
+
+ @Test
+ public void whenDeserializing_thenAdapterUsed() throws IOException {
+ Moshi moshi = new Moshi.Builder()
+ .add(new AuthorAdapter())
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ String json = "{\"author\":\"Baeldung \",\"text\":\"This is my post\",\"title\":\"My Post\"}";
+ Post post = jsonAdapter.fromJson(json);
+ System.out.println(post);
+ }
+ public static class AuthorAdapter {
+ private Pattern pattern = Pattern.compile("^(.*) <(.*)>$");
+ @ToJson
+ public String toJson(Author author) {
+ return author.name + " <" + author.email + ">";
+ }
+
+ @FromJson
+ public Author fromJson(String author) {
+ Matcher matcher = pattern.matcher(author);
+ return matcher.find() ? new Author(matcher.group(1), matcher.group(2)) : null;
+ }
+ }
+
+ public static class Author {
+ private String name;
+ private String email;
+
+ public Author() {
+ }
+
+ public Author(String name, String email) {
+ this.name = name;
+ this.email = email;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public String getEmail() {
+ return email;
+ }
+
+ public void setEmail(String email) {
+ this.email = email;
+ }
+
+ @Override
+ public String toString() {
+ return new ToStringBuilder(this).append("name", name).append("email", email).toString();
+ }
+ }
+ public static class Post {
+ private String title;
+ private Author author;
+ private String text;
+
+ public Post() {
+ }
+
+ public Post(String title, Author author, String text) {
+ this.title = title;
+ this.author = author;
+ this.text = text;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ }
+
+ public Author getAuthor() {
+ return author;
+ }
+
+ public void setAuthor(Author author) {
+ this.author = author;
+ }
+
+ public String getText() {
+ return text;
+ }
+
+ public void setText(String text) {
+ this.text = text;
+ }
+
+ @Override
+ public String toString() {
+ return new ToStringBuilder(this).append("title", title).append("author", author).append("text", text)
+ .toString();
+ }
+ }
+}
diff --git a/libraries-3/src/test/java/com/baeldung/moshi/TransientUnitTest.java b/libraries-3/src/test/java/com/baeldung/moshi/TransientUnitTest.java
new file mode 100644
index 0000000000..2554e937b3
--- /dev/null
+++ b/libraries-3/src/test/java/com/baeldung/moshi/TransientUnitTest.java
@@ -0,0 +1,66 @@
+package com.baeldung.moshi;
+
+import java.io.IOException;
+
+import com.squareup.moshi.JsonAdapter;
+import com.squareup.moshi.Moshi;
+import org.apache.commons.lang3.builder.ToStringBuilder;
+import org.junit.jupiter.api.Test;
+
+public class TransientUnitTest {
+
+ @Test
+ public void whenSerializing_thenTransientFieldIgnored() {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ Post post = new Post("My Post", "Baeldung");
+ String json = jsonAdapter.toJson(post);
+ System.out.println(json);
+ }
+
+ @Test
+ public void whenDeserializing_thenTransientFieldIgnored() throws IOException {
+ Moshi moshi = new Moshi.Builder()
+ .build();
+ JsonAdapter jsonAdapter = moshi.adapter(Post.class);
+
+ String json = "{\"authored_by\":\"Baeldung\",\"title\":\"My Post\"}";
+ Post post = jsonAdapter.fromJson(json);
+ System.out.println(post);
+ }
+ public static class Post {
+ private String title;
+ private transient String author;
+
+ public Post() {
+ }
+
+ public Post(String title, String author) {
+ this.title = title;
+ this.author = author;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ }
+
+ public String getAuthor() {
+ return author;
+ }
+
+ public void setAuthor(String author) {
+ this.author = author;
+ }
+
+ @Override
+ public String toString() {
+ return new ToStringBuilder(this).append("title", title).append("author", author).toString();
+ }
+ }
+}
diff --git a/lombok-custom/pom.xml b/lombok-custom/pom.xml
index 1455a4f6c6..75c3f9d407 100644
--- a/lombok-custom/pom.xml
+++ b/lombok-custom/pom.xml
@@ -36,12 +36,12 @@
- default-tools.jar
+ default-profile
-
- java.vendor
- Oracle Corporation
-
+ true
+
+ ${java.home}/../lib/tools.jar
+
@@ -53,6 +53,24 @@
+
+ mac-profile
+
+ false
+
+ ${java.home}/../Classes/classes.jar
+
+
+
+
+ com.sun
+ tools
+ ${java.version}
+ system
+ ${java.home}/../Classes/classes.jar
+
+
+
diff --git a/play-framework/async-http/.g8/form/app/controllers/$model__Camel$Controller.java b/play-framework/async-http/.g8/form/app/controllers/$model__Camel$Controller.java
new file mode 100644
index 0000000000..1ac4fe547d
--- /dev/null
+++ b/play-framework/async-http/.g8/form/app/controllers/$model__Camel$Controller.java
@@ -0,0 +1,43 @@
+package controllers;
+
+import play.data.Form;
+import play.data.FormFactory;
+import play.mvc.Controller;
+import play.mvc.Result;
+
+import javax.inject.Inject;
+
+// Add the following to conf/routes
+/*
+GET /$model;format="camel"$ controllers.$model;format="Camel"$Controller.$model;format="camel"$Get
+POST /$model;format="camel"$ controllers.$model;format="Camel"$Controller.$model;format="camel"$Post
+*/
+
+/**
+ * $model;format="Camel"$ form controller for Play Java
+ */
+public class $model;format="Camel"$Controller extends Controller {
+
+ private final Form<$model;format="Camel"$Data> $model;format="camel"$Form;
+
+ @Inject
+ public $model;format="Camel"$Controller(FormFactory formFactory) {
+ this.$model;format="camel"$Form = formFactory.form($model;format="Camel"$Data.class);
+ }
+
+ public Result $model;format="camel"$Get() {
+ return ok(views.html.$model;format="camel"$.form.render($model;format="camel"$Form));
+ }
+
+ public Result $model;format="camel"$Post() {
+ Form<$model;format="Camel"$Data> boundForm = $model;format="camel"$Form.bindFromRequest();
+ if (boundForm.hasErrors()) {
+ return badRequest(views.html.$model;format="camel"$.form.render(boundForm));
+ } else {
+ $model;format="Camel"$Data $model;format="camel"$ = boundForm.get();
+ flash("success", "$model;format="Camel"$ " + $model;format="camel"$);
+ return redirect(routes.$model;format="Camel"$Controller.$model;format="camel"$Get());
+ }
+ }
+
+}
diff --git a/play-framework/async-http/.g8/form/app/controllers/$model__Camel$Data.java b/play-framework/async-http/.g8/form/app/controllers/$model__Camel$Data.java
new file mode 100644
index 0000000000..50dc06f478
--- /dev/null
+++ b/play-framework/async-http/.g8/form/app/controllers/$model__Camel$Data.java
@@ -0,0 +1,37 @@
+package controllers;
+
+import play.data.validation.Constraints;
+
+public class $model;format="Camel"$Data {
+
+ @Constraints.Required
+ private String name;
+
+ @Constraints.Required
+ private Integer age;
+
+ public $model;format="Camel"$Data() {
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public Integer getAge() {
+ return age;
+ }
+
+ public void setAge(Integer age) {
+ this.age = age;
+ }
+
+ @Override
+ public String toString() {
+ return String.format("$model;format="Camel"$Data(%s, %s)", name, age);
+ }
+
+}
diff --git a/play-framework/async-http/.g8/form/app/views/$model__camel$/form.scala.html b/play-framework/async-http/.g8/form/app/views/$model__camel$/form.scala.html
new file mode 100644
index 0000000000..7bf9fd5427
--- /dev/null
+++ b/play-framework/async-http/.g8/form/app/views/$model__camel$/form.scala.html
@@ -0,0 +1,12 @@
+@($model;format="camel"$Form: Form[$model;format="Camel"$Data])
+
+$model;format="camel"$ form
+
+@flash.getOrDefault("success", "")
+
+@helper.form(action = routes.$model;format="Camel"$Controller.$model;format="camel"$Post()) {
+ @helper.CSRF.formField
+ @helper.inputText($model;format="camel"$Form("name"))
+ @helper.inputText($model;format="camel"$Form("age"))
+
+}
diff --git a/play-framework/async-http/.g8/form/default.properties b/play-framework/async-http/.g8/form/default.properties
new file mode 100644
index 0000000000..32090f30cb
--- /dev/null
+++ b/play-framework/async-http/.g8/form/default.properties
@@ -0,0 +1,2 @@
+description = Generates a Controller with form handling
+model = user
diff --git a/play-framework/async-http/.g8/form/generated-test/README.md b/play-framework/async-http/.g8/form/generated-test/README.md
new file mode 100644
index 0000000000..db01c87f30
--- /dev/null
+++ b/play-framework/async-http/.g8/form/generated-test/README.md
@@ -0,0 +1 @@
+Temporary file until g8-scaffold will generate "test" directory
diff --git a/play-framework/async-http/.g8/form/generated-test/controllers/$model__Camel$ControllerTest.java b/play-framework/async-http/.g8/form/generated-test/controllers/$model__Camel$ControllerTest.java
new file mode 100644
index 0000000000..7cdb87068b
--- /dev/null
+++ b/play-framework/async-http/.g8/form/generated-test/controllers/$model__Camel$ControllerTest.java
@@ -0,0 +1,50 @@
+package controllers;
+
+import org.junit.Test;
+import play.Application;
+import play.filters.csrf.*;
+import play.inject.guice.GuiceApplicationBuilder;
+import play.mvc.*;
+import play.test.WithApplication;
+
+import java.util.HashMap;
+
+import static org.junit.Assert.assertEquals;
+import static play.mvc.Http.RequestBuilder;
+import static play.mvc.Http.Status.OK;
+import static play.test.Helpers.*;
+import static play.api.test.CSRFTokenHelper.*;
+
+public class $model;format="Camel"$ControllerTest extends WithApplication {
+
+ @Override
+ protected Application provideApplication() {
+ return new GuiceApplicationBuilder().build();
+ }
+
+ @Test
+ public void test$model;format="Camel"$Get() {
+ RequestBuilder request = new RequestBuilder()
+ .method(GET)
+ .uri("/$model;format="camel"$");
+
+ Result result = route(app, request);
+ assertEquals(OK, result.status());
+ }
+
+ @Test
+ public void test$model;format="Camel"$Post() {
+ HashMap formData = new HashMap<>();
+ formData.put("name", "play");
+ formData.put("age", "4");
+ RequestBuilder request = addCSRFToken(new RequestBuilder()
+ .header(Http.HeaderNames.HOST, "localhost")
+ .method(POST)
+ .bodyForm(formData)
+ .uri("/$model;format="camel"$"));
+
+ Result result = route(app, request);
+ assertEquals(SEE_OTHER, result.status());
+ }
+
+}
diff --git a/play-framework/async-http/.gitignore b/play-framework/async-http/.gitignore
new file mode 100644
index 0000000000..eb372fc719
--- /dev/null
+++ b/play-framework/async-http/.gitignore
@@ -0,0 +1,8 @@
+logs
+target
+/.idea
+/.idea_modules
+/.classpath
+/.project
+/.settings
+/RUNNING_PID
diff --git a/play-framework/async-http/app/controllers/HomeController.java b/play-framework/async-http/app/controllers/HomeController.java
new file mode 100644
index 0000000000..5c791dcd22
--- /dev/null
+++ b/play-framework/async-http/app/controllers/HomeController.java
@@ -0,0 +1,38 @@
+package controllers;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.common.collect.ImmutableMap;
+import java.util.Collections;
+import java.util.Map;
+import play.mvc.Controller;
+import play.mvc.Http;
+import play.mvc.Result;
+
+/**
+ * This controller contains an action to handle HTTP requests to the application's home page.
+ */
+public class HomeController extends Controller {
+
+ /**
+ * An action that renders an HTML page with a welcome message. The configuration in the
+ * routes file means that this method will be called when the application receives
+ * a
+ * GET request with a path of /.
+ */
+ public Result index(Http.Request request) throws JsonProcessingException {
+ return ok(printStats(request));
+ }
+
+ private String printStats(Http.Request request) throws JsonProcessingException {
+ Map stringMap = request.body()
+ .asFormUrlEncoded();
+ Map map = ImmutableMap.of(
+ "Result", "ok",
+ "GetParams", request.queryString(),
+ "PostParams", stringMap == null ? Collections.emptyMap() : stringMap,
+ "Headers", request.getHeaders().toMap()
+ );
+ return new ObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(map);
+ }
+}
diff --git a/play-framework/async-http/app/views/index.scala.html b/play-framework/async-http/app/views/index.scala.html
new file mode 100644
index 0000000000..68d37fb1d4
--- /dev/null
+++ b/play-framework/async-http/app/views/index.scala.html
@@ -0,0 +1,5 @@
+@()
+
+@main("Welcome to Play") {
+ Welcome to Play!
+}
diff --git a/play-framework/async-http/app/views/main.scala.html b/play-framework/async-http/app/views/main.scala.html
new file mode 100644
index 0000000000..c5f755f236
--- /dev/null
+++ b/play-framework/async-http/app/views/main.scala.html
@@ -0,0 +1,24 @@
+@*
+ * This template is called from the `index` template. This template
+ * handles the rendering of the page header and body tags. It takes
+ * two arguments, a `String` for the title of the page and an `Html`
+ * object to insert into the body of the page.
+ *@
+@(title: String)(content: Html)
+
+
+
+
+ @* Here's where we render the page title `String`. *@
+ @title
+
+
+
+
+ @* And here's where we render the `Html` object containing
+ * the page content. *@
+ @content
+
+
+
+
diff --git a/play-framework/async-http/build.sbt b/play-framework/async-http/build.sbt
new file mode 100644
index 0000000000..eea47ffe88
--- /dev/null
+++ b/play-framework/async-http/build.sbt
@@ -0,0 +1,12 @@
+name := """async"""
+organization := "com.example"
+
+version := "1.0-SNAPSHOT"
+
+lazy val root = (project in file(".")).enablePlugins(PlayJava)
+
+scalaVersion := "2.13.1"
+
+// comment out the original line
+libraryDependencies += guice
+libraryDependencies += javaWs
diff --git a/play-framework/async-http/conf/application.conf b/play-framework/async-http/conf/application.conf
new file mode 100644
index 0000000000..492f37fed7
--- /dev/null
+++ b/play-framework/async-http/conf/application.conf
@@ -0,0 +1,11 @@
+# This is the main configuration file for the application.
+# https://www.playframework.com/documentation/latest/ConfigFile
+play.ws.followRedirects=false
+play.ws.useragent=MyPlayApplication
+play.ws.compressionEnabled=true
+# time to wait for the connection to be established
+play.ws.timeout.connection=30.seconds
+# time to wait for data after the connection is open
+play.ws.timeout.idle=30.seconds
+# max time available to complete the request
+play.ws.timeout.request=300.seconds
diff --git a/play-framework/async-http/conf/logback.xml b/play-framework/async-http/conf/logback.xml
new file mode 100644
index 0000000000..55441d39e2
--- /dev/null
+++ b/play-framework/async-http/conf/logback.xml
@@ -0,0 +1,36 @@
+
+
+
+
+
+
+ ${application.home:-.}/logs/application.log
+
+ %date [%level] from %logger in %thread - %message%n%xException
+
+
+
+
+
+ %coloredLevel %logger{15} - %message%n%xException{10}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/play-framework/async-http/conf/routes b/play-framework/async-http/conf/routes
new file mode 100644
index 0000000000..4f5162a8e7
--- /dev/null
+++ b/play-framework/async-http/conf/routes
@@ -0,0 +1,10 @@
+# Routes
+# This file defines all application routes (Higher priority routes first)
+# ~~~~
+
+# An example controller showing a sample home page
+GET / controllers.HomeController.index(request: Request)
+POST / controllers.HomeController.index(request: Request)
+
+# Map static resources from the /public folder to the /assets URL path
+GET /assets/*file controllers.Assets.versioned(path="/public", file: Asset)
diff --git a/play-framework/async-http/project/build.properties b/play-framework/async-http/project/build.properties
new file mode 100644
index 0000000000..6adcdc753f
--- /dev/null
+++ b/play-framework/async-http/project/build.properties
@@ -0,0 +1 @@
+sbt.version=1.3.3
diff --git a/play-framework/async-http/project/plugins.sbt b/play-framework/async-http/project/plugins.sbt
new file mode 100644
index 0000000000..1c8c62a0d5
--- /dev/null
+++ b/play-framework/async-http/project/plugins.sbt
@@ -0,0 +1,7 @@
+// The Play plugin
+addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.7.3")
+
+// Defines scaffolding (found under .g8 folder)
+// http://www.foundweekends.org/giter8/scaffolding.html
+// sbt "g8Scaffold form"
+addSbtPlugin("org.foundweekends.giter8" % "sbt-giter8-scaffold" % "0.11.0")
diff --git a/play-framework/async-http/public/images/favicon.png b/play-framework/async-http/public/images/favicon.png
new file mode 100644
index 0000000000..c7d92d2ae4
Binary files /dev/null and b/play-framework/async-http/public/images/favicon.png differ
diff --git a/play-framework/async-http/public/javascripts/main.js b/play-framework/async-http/public/javascripts/main.js
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/play-framework/async-http/public/stylesheets/main.css b/play-framework/async-http/public/stylesheets/main.css
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/play-framework/async-http/test/controllers/HomeControllerTest.java b/play-framework/async-http/test/controllers/HomeControllerTest.java
new file mode 100644
index 0000000000..a232dbfde0
--- /dev/null
+++ b/play-framework/async-http/test/controllers/HomeControllerTest.java
@@ -0,0 +1,232 @@
+package controllers;
+
+import static java.time.temporal.ChronoUnit.SECONDS;
+import static org.junit.Assert.assertEquals;
+import static play.mvc.Http.Status.SERVICE_UNAVAILABLE;
+
+import akka.Done;
+import akka.actor.ActorSystem;
+import akka.stream.ActorMaterializer;
+import akka.stream.javadsl.Sink;
+import akka.util.ByteString;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.Duration;
+import java.util.OptionalInt;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.IntStream;
+import org.apache.http.HttpStatus;
+import org.junit.Before;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import play.Application;
+import play.inject.guice.GuiceApplicationBuilder;
+import play.libs.concurrent.Futures;
+import play.libs.ws.WSClient;
+import play.libs.ws.WSResponse;
+import play.libs.ws.ahc.AhcCurlRequestLogger;
+import play.mvc.Result;
+import play.mvc.Results;
+import play.test.WithServer;
+
+public class HomeControllerTest extends WithServer {
+
+ private final Logger log = LoggerFactory.getLogger(HomeControllerTest.class);
+ private String url;
+ private int port;
+
+ @Override
+ protected Application provideApplication() {
+ return new GuiceApplicationBuilder().build();
+ }
+
+ @Before
+ public void setup() {
+ OptionalInt optHttpsPort = testServer.getRunningHttpsPort();
+ if (optHttpsPort.isPresent()) {
+ port = optHttpsPort.getAsInt();
+ url = "https://localhost:" + port;
+ } else {
+ port = testServer.getRunningHttpPort()
+ .getAsInt();
+ url = "http://localhost:" + port;
+ }
+ }
+
+ @Test
+ public void givenASingleGetRequestWhenResponseThenBlockWithCompletableAndLog()
+ throws Exception {
+ WSClient ws = play.test.WSTestClient.newClient(port);
+ WSResponse wsResponse = ws.url(url)
+ .setRequestFilter(new AhcCurlRequestLogger())
+ .addHeader("key", "value")
+ .addQueryParameter("num", "" + 1)
+ .get()
+ .toCompletableFuture()
+ .get();
+
+ log.debug("Thread#" + Thread.currentThread()
+ .getId() + " Request complete: Response code = "
+ + wsResponse.getStatus()
+ + " | Response: " + wsResponse.getBody() + " | Current Time:"
+ + System.currentTimeMillis());
+ assert (HttpStatus.SC_OK == wsResponse.getStatus());
+ }
+
+ @Test
+ public void givenASingleGetRequestWhenResponseThenLog() throws Exception {
+ CountDownLatch latch = new CountDownLatch(1);
+ WSClient ws = play.test.WSTestClient.newClient(port);
+ ws.url(url)
+ .setRequestFilter(new AhcCurlRequestLogger())
+ .addHeader("key", "value")
+ .addQueryParameter("num", "" + 1)
+ .get()
+ .thenAccept(r -> {
+ log.debug("Thread#" + Thread.currentThread()
+ .getId() + " Request complete: Response code = "
+ + r.getStatus()
+ + " | Response: " + r.getBody() + " | Current Time:" + System.currentTimeMillis());
+ latch.countDown();
+ });
+
+ log.debug(
+ "Waiting for requests to be completed. Current Time: " + System.currentTimeMillis());
+ latch.await(5, TimeUnit.SECONDS );
+ assertEquals(0, latch.getCount());
+ log.debug("All requests have been completed. Exiting test.");
+ }
+
+ @Test
+ public void givenASinglePostRequestWhenResponseThenLog() throws Exception {
+ CountDownLatch latch = new CountDownLatch(1);
+ WSClient ws = play.test.WSTestClient.newClient(port);
+ ws.url(url)
+ .setContentType("application/x-www-form-urlencoded")
+ .post("key1=value1&key2=value2")
+ .thenAccept(r -> {
+ log.debug("Thread#" + Thread.currentThread()
+ .getId() + " Request complete: Response code = "
+ + r.getStatus()
+ + " | Response: " + r.getBody() + " | Current Time:" + System.currentTimeMillis());
+ latch.countDown();
+ });
+
+ log.debug(
+ "Waiting for requests to be completed. Current Time: " + System.currentTimeMillis());
+ latch.await(5, TimeUnit.SECONDS );
+ assertEquals(0, latch.getCount());
+ log.debug("All requests have been completed. Exiting test.");
+ }
+
+ @Test
+ public void givenMultipleRequestsWhenResponseThenLog() throws Exception {
+ CountDownLatch latch = new CountDownLatch(100);
+ WSClient ws = play.test.WSTestClient.newClient(port);
+ IntStream.range(0, 100)
+ .parallel()
+ .forEach(num ->
+ ws.url(url)
+ .setRequestFilter(new AhcCurlRequestLogger())
+ .addHeader("key", "value")
+ .addQueryParameter("num", "" + num)
+ .get()
+ .thenAccept(r -> {
+ log.debug(
+ "Thread#" + num + " Request complete: Response code = " + r.getStatus()
+ + " | Response: " + r.getBody() + " | Current Time:"
+ + System.currentTimeMillis());
+ latch.countDown();
+ })
+ );
+
+ log.debug(
+ "Waiting for requests to be completed. Current Time: " + System.currentTimeMillis());
+ latch.await(5, TimeUnit.SECONDS );
+ assertEquals(0, latch.getCount());
+ log.debug("All requests have been completed. Exiting test.");
+ }
+
+ @Test
+ public void givenLongResponseWhenTimeoutThenHandle() throws Exception {
+ CountDownLatch latch = new CountDownLatch(1);
+ WSClient ws = play.test.WSTestClient.newClient(port);
+ Futures futures = app.injector()
+ .instanceOf(Futures.class);
+ CompletionStage f = futures.timeout(
+ ws.url(url)
+ .setRequestTimeout(Duration.of(1, SECONDS))
+ .get()
+ .thenApply(result -> {
+ try {
+ Thread.sleep(2000L);
+ return Results.ok();
+ } catch (InterruptedException e) {
+ return Results.status(
+ SERVICE_UNAVAILABLE);
+ }
+ }), 1L, TimeUnit.SECONDS
+ );
+ CompletionStage