Merge branch 'master' of https://github.com/eugenp/tutorials

rxjava/src/test/java/com/baeldung/rxjava/filters/RxJavaFilterOperatorsTest.java

@@ -0,0 +1,202 @@
+package com.baeldung.rxjava.filters;
+
+import org.junit.Test;
+
+import rx.Observable;
+import rx.observers.TestSubscriber;
+
+public class RxJavaFilterOperatorsTest {
+
+    @Test
+    public void givenRangeObservable_whenFilteringItems_thenOddItemsAreFiltered() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.filter(i -> i % 2 != 0);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(5);
+        subscriber.assertValues(1, 3, 5, 7, 9);
+    }
+
+    @Test
+    public void givenRangeObservable_whenFilteringWithTake_thenOnlyFirstThreeItemsAreEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.take(3);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(3);
+        subscriber.assertValues(1, 2, 3);
+    }
+
+    @Test
+    public void givenObservable_whenFilteringWithTakeWhile_thenItemsEmittedUntilConditionIsVerified() {
+
+        Observable<Integer> sourceObservable = Observable.just(1, 2, 3, 4, 3, 2, 1);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.takeWhile(i -> i < 4);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(3);
+        subscriber.assertValues(1, 2, 3);
+    }
+
+    @Test
+    public void givenRangeObservable_whenFilteringWithTakeFirst_thenOnlyFirstItemIsEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.just(1, 2, 3, 4, 5, 7, 6);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.takeFirst(x -> x > 5);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(1);
+        subscriber.assertValue(7);
+    }
+
+    @Test
+    public void givenRangeObservable_whenFilteringWithFirst_thenOnlyFirstThreeItemsAreEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.first();
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(1);
+        subscriber.assertValue(1);
+    }
+
+    @Test
+    public void givenEmptyObservable_whenFilteringWithFirstOrDefault_thenDefaultValue() {
+
+        Observable<Integer> sourceObservable = Observable.empty();
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.firstOrDefault(-1);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(1);
+        subscriber.assertValue(-1);
+    }
+
+    @Test
+    public void givenRangeObservable_whenFilteringWithTakeLast_thenLastThreeItemAreEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.takeLast(3);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(3);
+        subscriber.assertValues(8, 9, 10);
+    }
+
+    @Test
+    public void givenRangeObservable_whenFilteringWithLast_thenOnlyLastItemIsEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.last(i -> i % 2 != 0);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(1);
+        subscriber.assertValue(9);
+    }
+
+    @Test
+    public void givenRangeObservable_whenFilteringWithLastAndDefault_thenOnlyDefaultIsEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.lastOrDefault(-1, i -> i > 10);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(1);
+        subscriber.assertValue(-1);
+    }
+
+    @Test
+    public void givenObservable_whenTakingElementAt_thenItemAtSpecifiedIndexIsEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.just(1, 2, 3, 5, 7, 11);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.elementAt(4);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(1);
+        subscriber.assertValue(7);
+    }
+
+    @Test
+    public void givenObservable_whenTakingElementAtOrDefault_thenDefaultIsReturned() {
+
+        Observable<Integer> sourceObservable = Observable.just(1, 2, 3, 5, 7, 11);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.elementAtOrDefault(7, -1);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(1);
+        subscriber.assertValue(-1);
+    }
+
+    @Test
+    public void givenMixedTypeObservable_whenFilteringByType_thenOnlyNumbersAreEmitted() {
+
+        Observable sourceObservable = Observable.just(1, "two", 3, "five", 7, 11);
+        TestSubscriber subscriber = new TestSubscriber();
+
+        Observable filteredObservable = sourceObservable.ofType(String.class);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(2);
+        subscriber.assertValues("two", "five");
+
+    }
+}

rxjava/src/test/java/com/baeldung/rxjava/filters/RxJavaSkipOperatorsTest.java

@@ -0,0 +1,105 @@
+package com.baeldung.rxjava.filters;
+
+import org.junit.Test;
+
+import rx.Observable;
+import rx.observers.TestSubscriber;
+
+public class RxJavaSkipOperatorsTest {
+
+    @Test
+    public void givenRangeObservable_whenSkipping_thenFirstFourItemsAreSkipped() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.skip(4);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(6);
+        subscriber.assertValues(5, 6, 7, 8, 9, 10);
+    }
+
+    @Test
+    public void givenObservable_whenSkippingWhile_thenFirstItemsAreSkipped() {
+
+        Observable<Integer> sourceObservable = Observable.just(1, 2, 3, 4, 5, 4, 3, 2, 1);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.skipWhile(i -> i < 4);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(6);
+        subscriber.assertValues(4, 5, 4, 3, 2, 1);
+    }
+
+    @Test
+    public void givenRangeObservable_whenSkippingLast_thenLastFiveItemsAreSkipped() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = sourceObservable.skipLast(5);
+
+        filteredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(5);
+        subscriber.assertValues(1, 2, 3, 4, 5);
+    }
+
+    @Test
+    public void givenObservable_whenFilteringDistinct_thenOnlyDistinctValuesAreEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.just(1, 1, 2, 2, 1, 3, 3, 1);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> distinctObservable = sourceObservable.distinct();
+
+        distinctObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(3);
+        subscriber.assertValues(1, 2, 3);
+    }
+
+    @Test
+    public void givenObservable_whenFilteringDistinctUntilChanged_thenOnlyDistinctConsecutiveItemsAreEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.just(1, 1, 2, 2, 1, 3, 3, 1);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> distinctObservable = sourceObservable.distinctUntilChanged();
+
+        distinctObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(5);
+        subscriber.assertValues(1, 2, 1, 3, 1);
+    }
+
+    @Test
+    public void givenRangeObservable_whenIgnoringElements_thenOnlyDistinctConsecutiveItemsAreEmitted() {
+
+        Observable<Integer> sourceObservable = Observable.range(1, 10);
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> ignoredObservable = sourceObservable.ignoreElements();
+
+        ignoredObservable.subscribe(subscriber);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValueCount(0);
+        subscriber.assertNoValues();
+    }
+}

rxjava/src/test/java/com/baeldung/rxjava/filters/RxJavaTimeFilteringOperatorsTest.java

@@ -0,0 +1,221 @@
+package com.baeldung.rxjava.filters;
+
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import org.junit.Test;
+
+import rx.Observable;
+import rx.observers.TestSubscriber;
+import rx.schedulers.TestScheduler;
+
+public class RxJavaTimeFilteringOperatorsTest {
+
+    @Test
+    public void givenTimedObservable_whenSampling_thenOnlySampleItemsAreEmitted() {
+
+        TestScheduler testScheduler = new TestScheduler();
+
+        Observable<Integer> timedObservable =
+                Observable.just(1, 2, 3, 4, 5, 6)
+                        .zipWith(
+                                Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
+                                (item, time) -> item
+                        );
+
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> sampledObservable =
+                timedObservable.sample(2500L, TimeUnit.MILLISECONDS, testScheduler);
+
+        sampledObservable.subscribe(subscriber);
+
+        testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValues(3, 5, 6);
+    }
+
+    @Test
+    public void givenTimedObservable_whenThrottlingLast_thenThrottleLastItemsAreEmitted() {
+
+        TestScheduler testScheduler = new TestScheduler();
+
+        Observable<Integer> timedObservable =
+                Observable.just(1, 2, 3, 4, 5, 6)
+                        .zipWith(
+                                Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
+                                (item, time) -> item
+                        );
+
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = timedObservable.throttleLast(3100L, TimeUnit.MILLISECONDS, testScheduler);
+
+        filteredObservable.subscribe(subscriber);
+
+        testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValues(4, 6);
+    }
+
+    @Test
+    public void givenRangeObservable_whenThrottlingFirst_thenThrottledFirstItemsAreEmitted() {
+
+        TestScheduler testScheduler = new TestScheduler();
+
+        Observable<Integer> timedObservable =
+                Observable.just(1, 2, 3, 4, 5, 6)
+                        .zipWith(
+                                Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
+                                (item, time) -> item
+                        );
+
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable =
+                timedObservable.throttleFirst(4100L, TimeUnit.MILLISECONDS, testScheduler);
+
+        filteredObservable.subscribe(subscriber);
+
+        testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValues(1, 6);
+    }
+
+    @Test
+    public void givenTimedObservable_whenThrottlingWithTimeout_thenLastItemIsEmitted() {
+
+        TestScheduler testScheduler = new TestScheduler();
+
+        Observable<Integer> timedObservable =
+                Observable.just(1, 2, 3, 4, 5, 6)
+                        .zipWith(
+                                Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
+                                (item, time) -> item
+                        );
+
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = timedObservable.throttleWithTimeout(2000L, TimeUnit.MILLISECONDS, testScheduler);
+
+        filteredObservable.subscribe(subscriber);
+
+        testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValue(6);
+    }
+
+    @Test
+    public void givenTimedObservable_whenDebounceOperatorIsApplied_thenLastItemIsEmitted() {
+
+        TestScheduler testScheduler = new TestScheduler();
+
+        Observable<Integer> timedObservable =
+                Observable.just(1, 2, 3, 4, 5, 6)
+                        .zipWith(
+                                Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
+                                (item, time) -> item
+                        );
+
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = timedObservable.debounce(2000L, TimeUnit.MILLISECONDS, testScheduler);
+
+        filteredObservable.subscribe(subscriber);
+
+        testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValue(6);
+    }
+
+    @Test
+    public void givenTimedObservable_whenUsingTimeout_thenTimeOutException() {
+
+        TestScheduler testScheduler = new TestScheduler();
+
+        Observable<Integer> timedObservable =
+                Observable.just(1, 2, 3, 4, 5, 6)
+                        .zipWith(
+                                Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
+                                (item, time) -> item
+                        );
+
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = timedObservable.timeout(500L, TimeUnit.MILLISECONDS, testScheduler);
+
+        filteredObservable.subscribe(subscriber);
+
+        testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);
+
+        subscriber.assertError(TimeoutException.class);
+        subscriber.assertValues(1);
+    }
+
+    @Test
+    public void givenObservable_whenSkippingUntil_thenItemsAreSkippedUntilSecondObservableEmitsItems() {
+
+        TestScheduler testScheduler = new TestScheduler();
+
+        Observable<Integer> timedObservable =
+                Observable.just(1, 2, 3, 4, 5, 6)
+                        .zipWith(
+                                Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
+                                (item, time) -> item
+                        );
+
+
+        Observable<Integer> delayedObservable = Observable.just(1)
+                .delay(3000, TimeUnit.MILLISECONDS, testScheduler);
+
+        TestSubscriber<Integer> subscriber = new TestSubscriber();
+
+        Observable<Integer> filteredObservable = timedObservable.skipUntil(delayedObservable);
+
+        filteredObservable.subscribe(subscriber);
+
+        testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValues(4, 5, 6);
+    }
+
+    @Test
+    public void givenObservable_whenSkippingWhile_thenItemsAreEmittedUntilSecondObservableEmitsItems() {
+
+        TestScheduler testScheduler = new TestScheduler();
+
+        Observable<Integer> timedObservable =
+                Observable.just(1, 2, 3, 4, 5, 6)
+                        .zipWith(
+                                Observable.interval(0, 1, TimeUnit.SECONDS, testScheduler),
+                                (item, time) -> item
+                        );
+
+        TestSubscriber subscriber = new TestSubscriber();
+
+        Observable<Integer> delayedObservable = Observable.just(1)
+                .delay(3000, TimeUnit.MILLISECONDS, testScheduler);
+
+        Observable<Integer> filteredObservable = timedObservable.takeUntil(delayedObservable);
+
+        filteredObservable.subscribe(subscriber);
+
+        testScheduler.advanceTimeBy(7, TimeUnit.SECONDS);
+
+        subscriber.assertCompleted();
+        subscriber.assertNoErrors();
+        subscriber.assertValues(1, 2, 3);
+    }
+}

spring-mvc-xml/README.md

@@ -15,3 +15,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [Geolocation by IP in Java](http://www.baeldung.com/geolocation-by-ip-with-maxmind)
 - [Guide to JavaServer Pages (JSP)](http://www.baeldung.com/jsp)
 - [Exploring SpringMVC’s Form Tag Library](http://www.baeldung.com/spring-mvc-form-tags)
+- [Guide to JSTL](http://www.baeldung.com/guide-to-jstl)

spring-mvc-xml/pom.xml

@@ -37,6 +37,13 @@
 
         <!-- web -->
 
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.9.2</version>
+        </dependency>
+
+
         <dependency>
             <groupId>javax.servlet</groupId>
             <artifactId>javax.servlet-api</artifactId>
@@ -57,6 +64,13 @@
             <version>${hibernate-validator.version}</version>
         </dependency>
 
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>6.0.6</version>
+        </dependency>
+
+
         <!-- Json conversion -->
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
@@ -108,6 +122,14 @@
 
     </build>
 
+    <repositories>
+        <repository>
+            <id>1</id>
+            <name>jstl</name>
+            <url>https://mvnrepository.com/artifact/javax.servlet/jstl</url>
+        </repository>
+    </repositories>
+
     <properties>
         <!-- Spring -->
         <org.springframework.version>5.0.2.RELEASE</org.springframework.version>

spring-mvc-xml/src/main/java/com/baeldung/jstl/bundles/CustomMessage_en.java

@@ -0,0 +1,17 @@
+package com.baeldung.jstl.bundles;
+
+import java.util.ListResourceBundle;
+
+public class CustomMessage_en extends ListResourceBundle {
+    @Override
+    protected Object[][] getContents() {
+        return contents;
+    }
+
+    static final Object[][] contents = {
+            {"verb.go", "go"},
+            {"verb.come", "come"},
+            {"verb.sit", "sit"},
+            {"verb.stand", "stand"}
+    };
+}

spring-mvc-xml/src/main/java/com/baeldung/jstl/bundles/CustomMessage_fr_FR.java

@@ -0,0 +1,17 @@
+package com.baeldung.jstl.bundles;
+
+import java.util.ListResourceBundle;
+
+public class CustomMessage_fr_FR extends ListResourceBundle {
+    @Override
+    protected Object[][] getContents() {
+        return contents;
+    }
+
+    static final Object[][] contents = {
+            {"verb.go", "aller"},
+            {"verb.come", "venir"},
+            {"verb.sit", "siéger"},
+            {"verb.stand", "se lever"}
+    };
+}

spring-mvc-xml/src/main/java/com/baeldung/jstl/controllers/JSTLController.java

@@ -0,0 +1,125 @@
+package com.baeldung.jstl.controllers;
+
+import com.baeldung.jstl.dbaccess.SQLConnection;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.annotation.PostConstruct;
+import javax.servlet.ServletContext;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.File;
+import java.sql.*;
+import java.util.Calendar;
+
+@Controller
+public class JSTLController {
+    private static final Logger LOGGER = LoggerFactory.getLogger(JSTLController.class.getName());
+
+    @Autowired
+    ServletContext servletContext;
+
+    @PostConstruct
+    public void init() {
+        PreparedStatement preparedStatement = null;
+        Connection connection = null;
+        try {
+            connection = SQLConnection.getConnection();
+            preparedStatement = connection.prepareStatement("create table IF NOT EXISTS USERS " +
+                    "( id int not null primary key AUTO_INCREMENT," +
+                    " email VARCHAR(255) not null, first_name varchar (255), last_name varchar (255), registered DATE)");
+            int status = preparedStatement.executeUpdate();
+            preparedStatement = connection.prepareStatement("SELECT COUNT(*) AS total FROM USERS;");
+            ResultSet result = preparedStatement.executeQuery();
+            if(result!=null) {
+                result.next();
+                if (result.getInt("total") == 0) {
+                    generateDummy(connection);
+                }
+            } else {
+                generateDummy(connection);
+            }
+        } catch (Exception e) {
+            LOGGER.error(e.getMessage());
+        } finally {
+            try {
+                if (preparedStatement != null) {
+                    preparedStatement.close();
+                }
+                if (connection != null) {
+                    connection.close();
+                }
+            } catch (SQLException e) {
+                LOGGER.error(e.getMessage());
+            }
+
+        }
+    }
+
+    @RequestMapping(value = "/core_tags", method = RequestMethod.GET)
+    public ModelAndView coreTags(final Model model) {
+        ModelAndView mv = new ModelAndView("core_tags");
+        return mv;
+    }
+
+    @RequestMapping(value = "/core_tags_redirect", method = RequestMethod.GET)
+    public ModelAndView coreTagsRedirect(final Model model) {
+        ModelAndView mv = new ModelAndView("core_tags_redirect");
+        return mv;
+    }
+
+
+    @RequestMapping(value = "/formatting_tags", method = RequestMethod.GET)
+    public ModelAndView formattingTags(final Model model) {
+        ModelAndView mv = new ModelAndView("formatting_tags");
+        return mv;
+    }
+
+    @RequestMapping(value = "/sql_tags", method = RequestMethod.GET)
+    public ModelAndView sqlTags(final Model model) {
+        ModelAndView mv = new ModelAndView("sql_tags");
+        return mv;
+    }
+
+    @RequestMapping(value = "/xml_tags", method = RequestMethod.GET)
+    public ModelAndView xmlTags(final Model model) {
+        ModelAndView mv = new ModelAndView("xml_tags");
+        return mv;
+    }
+
+    @RequestMapping(value = "/items_xml", method = RequestMethod.GET)
+    @ResponseBody public FileSystemResource getFile(HttpServletRequest request, HttpServletResponse response) {
+        response.setContentType("application/xml");
+        return new FileSystemResource(new File(servletContext.getRealPath("/WEB-INF/items.xsl")));
+    }
+
+    @RequestMapping(value = "/function_tags", method = RequestMethod.GET)
+    public ModelAndView functionTags(final Model model) {
+        ModelAndView mv = new ModelAndView("function_tags");
+        return mv;
+    }
+
+
+    private void generateDummy(Connection connection) throws SQLException {
+        PreparedStatement preparedStatement = connection.prepareStatement("INSERT INTO USERS " +
+                "(email, first_name, last_name, registered) VALUES (?, ?, ?, ?);");
+        preparedStatement.setString(1, "patrick@baeldung.com");
+        preparedStatement.setString(2, "Patrick");
+        preparedStatement.setString(3, "Frank");
+        preparedStatement.setDate(4, new Date(Calendar.getInstance().getTimeInMillis()));
+        preparedStatement.addBatch();
+        preparedStatement.setString(1, "bfrank@baeldung.com");
+        preparedStatement.setString(2, "Benjamin");
+        preparedStatement.setString(3, "Franklin");
+        preparedStatement.setDate(4, new Date(Calendar.getInstance().getTimeInMillis()));
+        preparedStatement.executeBatch();
+    }
+}

spring-mvc-xml/src/main/java/com/baeldung/jstl/dbaccess/SQLConnection.java

@@ -0,0 +1,30 @@
+package com.baeldung.jstl.dbaccess;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.util.Properties;
+
+public class SQLConnection {
+    private static String userName = "root";
+    private static String password = "";
+    private static final Logger LOGGER = LoggerFactory.getLogger(SQLConnection.class.getName());
+
+    public static Connection getConnection() throws Exception {
+        LOGGER.error("connecting...");
+        Class.forName("com.mysql.cj.jdbc.Driver");
+        LOGGER.error("class checked...");
+        Connection conn = null;
+        Properties connectionProps = new Properties();
+        connectionProps.put("user", userName);
+        connectionProps.put("password", password);
+        conn = DriverManager.getConnection(
+                "jdbc:mysql://localhost:3306/test?autoReconnect=true&useSSL=false",
+                connectionProps);
+        LOGGER.info("Connected to database");
+        return conn;
+    }
+}

spring-mvc-xml/src/main/resources/webMvcConfig.xml

@@ -23,7 +23,7 @@
         </mvc:message-converters>
     </mvc:annotation-driven>
     
-    <context:component-scan base-package="com.baeldung.spring.controller"/>
+    <context:component-scan base-package="com.baeldung.spring.controller, com.baeldung.jstl.controllers"/>
     
     <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
         <property name="prefix" value="/WEB-INF/view/"/>

spring-mvc-xml/src/main/webapp/WEB-INF/items.xsl

@@ -0,0 +1,27 @@
+<?xml version = "1.0"?>
+<xsl:stylesheet xmlns:xsl = "http://www.w3.org/1999/XSL/Transform" version = "1.0">
+
+    <xsl:output method = "html" indent = "yes"/>
+    <xsl:param name = "bgColor"/>
+
+    <xsl:template match = "/">
+        <html>
+            <body>
+                <xsl:apply-templates/>
+            </body>
+        </html>
+    </xsl:template>
+
+    <xsl:template match = "items">
+        <table border = "1" width = "40%" bgColor = "{$bgColor}">
+            <xsl:for-each select = "item">
+                <tr>
+                    <td><i><xsl:value-of select = "name"/></i></td>
+                    <td><xsl:value-of select = "category"/></td>
+                    <td><xsl:value-of select = "price"/></td>
+                </tr>
+            </xsl:for-each>
+        </table>
+    </xsl:template>
+
+</xsl:stylesheet>

spring-mvc-xml/src/main/webapp/WEB-INF/mvc-servlet.xml

@@ -7,7 +7,7 @@
         http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
 
 
-    <context:component-scan base-package="com.baeldung.spring.controller"/>
+    <context:component-scan base-package="com.baeldung.spring.controller, com.baeldung.jstl.controllers"/>
 
     <!-- Start: Mapping by bean name (BeanNameUrlHandlerMapping) -->
     <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">
@@ -40,12 +40,6 @@
     <bean id="helloController" class="com.baeldung.spring.controller.HelloController"/>
     <!-- End: Mapping by SimpleUrlHandlerMapping -->
 
-    <!-- Start: Mapping by ControllerClassNameHandlerMapping -->
-    <bean
-            class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">
-        <property name="caseSensitive" value="true"/>
-        <property name="order" value="0"/>
-    </bean>
 
     <bean class="com.baeldung.spring.controller.HelloGuestController"/>
     <!-- End: Mapping by ControllerClassNameHandlerMapping -->

spring-mvc-xml/src/main/webapp/WEB-INF/view/core_tags.jsp

@@ -0,0 +1,92 @@
+<%@ page import="java.util.Random" %>
+<%@ page import="java.util.Date" %>
+<%@ page import="java.util.Calendar" %>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<html>
+<head>
+    <c:set value="JSTL Core Tags Example" var="pageTitle"/>
+    <title>
+        <c:out value="${pageTitle}"/>
+    </title>
+</head>
+<body>
+<h1>
+    <c:out value="${pageTitle}"/>
+</h1>
+<c:remove var="pageTitle"/>
+<p><c:out value="${pageTitle}"/></p>
+<div>
+    <h3>
+        <c:out value="<c:catch> Example"/>
+    </h3>
+    <c:catch var ="exceptionThrown">
+        <% int x = Integer.valueOf("a");%>
+    </c:catch>
+
+    <c:if test = "${exceptionThrown != null}">
+        <p>The exception is : ${exceptionThrown} <br />
+            There is an exception: ${exceptionThrown.message}</p>
+    </c:if>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<c:choose> Example"/>
+        <c:set value="<%= Calendar.getInstance().get(Calendar.SECOND)%>" var="seconds"/>
+    </h3>
+    <p>
+        <c:choose>
+            <c:when test="${seconds le 30 }">
+                <c:out value="${seconds} is less than 30"/>
+            </c:when>
+            <c:when test="${seconds eq 30 }">
+                <c:out value="${seconds} is equal to 30"/>
+            </c:when>
+            <c:otherwise>
+                <c:out value="${seconds} is greater than 30"/>
+            </c:otherwise>
+        </c:choose>
+    </p>
+</div>
+<div>
+    <h3>
+        <c:out value="<c:import> Example"/>
+    </h3>
+
+    <c:import var = "data" url = "http://www.example.com"/>
+    <c:out value = "${data}"/>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<c:forEach> Example"/>
+    </h3>
+
+    <c:forEach var = "i" items="1,4,5,6,7,8,9">
+    Item <c:out value = "No. ${i}"/><p>
+    </c:forEach>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<c:forToken> Example"/>
+    </h3>
+
+    <c:forTokens items = "Patrick:Wilson:Ibrahima:Chris" delims = ":" var = "name">
+    <c:out value = "Name: ${name}"/><p>
+    </c:forTokens>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<c:url> and <c:param> Example"/>
+    </h3>
+    <c:url value = "/core_tags" var = "myURL">
+        <c:param name = "parameter_1" value = "1234"/>
+        <c:param name = "parameter_2" value = "abcd"/>
+    </c:url>
+    <c:out value = "URL: ${myURL}"/>
+</div>
+</body>
+</html>

spring-mvc-xml/src/main/webapp/WEB-INF/view/core_tags_redirect.jsp

@@ -0,0 +1,16 @@
+<%@ page import="java.util.Random" %>
+<%@ page import="java.util.Date" %>
+<%@ page import="java.util.Calendar" %>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<html>
+<head>
+    <c:set value="JSTL Core Tags Examples" var="pageTitle"/>
+    <title>
+        <c:out value="${pageTitle}"/>
+    </title>
+</head>
+<body>
+<c:redirect url="/core_tags"/>
+</body>
+</html>

spring-mvc-xml/src/main/webapp/WEB-INF/view/formatting_tags.jsp

@@ -0,0 +1,213 @@
+<%@ page import="java.util.Calendar" %>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
+<html>
+<head>
+    <c:set value="JSTL Formatting Tags Example" var="pageTitle"/>
+    <title>
+        <c:out value="${pageTitle}"/>
+    </title>
+</head>
+<body>
+<h1>
+    <c:out value="${pageTitle}"/>
+</h1>
+<div>
+    <h3>
+        <c:out value="<fmt:formatNumber> Example"/>
+    </h3>
+    <c:set var="fee" value="35050.1067"/>
+
+    <p>Formatted Number - Currency: <fmt:formatNumber value="${fee}"
+                                                      type="currency"/></p>
+
+    <p>Formatted Number - Maximum Integer Digits: <fmt:formatNumber type="number"
+                                                                    maxIntegerDigits="2" value="${fee}"/></p>
+
+    <p>Formatted Number - Maximum Fraction Digits: <fmt:formatNumber type="number"
+                                                                     maxFractionDigits="2" value="${fee}"/></p>
+
+    <p>Formatted Number - Grouping: <fmt:formatNumber type="number"
+                                                      groupingUsed="false" value="${fee}"/></p>
+
+    <p>Formatted Number - Percent with Maximum Integer Digits: <fmt:formatNumber type="percent"
+                                                                                 maxIntegerDigits="3"
+                                                                                 value="${fee}"/></p>
+
+    <p>Formatted Number - Percent with Minimum Fraction Digits: <fmt:formatNumber type="percent"
+                                                                                  minFractionDigits="10"
+                                                                                  value="${fee}"/></p>
+
+    <p>Formatted Number Percent with Minimum Integer Digits: <fmt:formatNumber type="percent"
+                                                                               minIntegerDigits="4" value="${fee}"/></p>
+
+    <p>Formatted Number - with Pattern: <fmt:formatNumber type="number"
+                                                          pattern="###.##E0" value="${fee}"/></p>
+
+    <p>Formatted Number - Currency with Internationalization :
+        <fmt:setLocale value="en_US"/>
+        <fmt:formatNumber value="${fee}" type="currency"/>
+    </p>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<fmt:parseNumber> Example"/>
+    </h3>
+    <fmt:parseNumber var="i" type="number" value="${fee}"/>
+    <p>Parsed Number : <c:out value="${i}"/></p>
+    <fmt:parseNumber var="i" integerOnly="true"
+                     type="number" value="${fee}"/>
+    <p>Parsed Number - with Integer Only set to True: <c:out value="${i}"/></p>
+</div>
+<div>
+    <h3>
+        <c:out value="<fmt:formatDate> Example"/>
+        <c:set var="now" value="<%= new java.util.Date()%>"/>
+    </h3>
+
+    <p>Formatted Date - with type set to time: <fmt:formatDate type="time"
+                                       value="${now}"/></p>
+
+    <p>Formatted Date - with type set to date: <fmt:formatDate type="date"
+                                                               value="${now}"/></p>
+
+    <p>Formatted Date - with type set to both: <fmt:formatDate type="both"
+                                                               value="${now}"/></p>
+
+    <p>Formatted Date - with short style for both date and time: <fmt:formatDate type="both"
+                                                                                 dateStyle="short" timeStyle="short"
+                                                                                 value="${now}"/></p>
+
+    <p>Formatted Date - with medium style for both date and time: <fmt:formatDate type="both"
+                                                                                  dateStyle="medium" timeStyle="medium"
+                                                                                  value="${now}"/></p>
+
+    <p>Formatted Date - with long style for both date and time: <fmt:formatDate type="both"
+                                                                                dateStyle="long" timeStyle="long"
+                                                                                value="${now}"/></p>
+
+    <p>Formatted Date - with pattern: <fmt:formatDate pattern="yyyy-MM-dd"
+                                                      value="${now}"/></p>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<fmt:parseDate> Example"/>
+    </h3>
+
+    <c:set var="today" value="28-03-2018"/>
+    <fmt:parseDate value="${today}" var="parsedDate" pattern="dd-MM-yyyy"/>
+    <p>Parsed Date: <c:out value="${parsedDate}"/></p>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<fmt:bundle> and <fmt:message> Example"/>
+    </h3>
+
+    <p>
+        <fmt:bundle basename="com.baeldung.jstl.bundles.CustomMessage" prefix="verb.">
+            <fmt:message key="go"/><br/>
+            <fmt:message key="come"/><br/>
+            <fmt:message key="sit"/><br/>
+            <fmt:message key="stand"/><br/>
+        </fmt:bundle>
+    </p>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<fmt:setLocale> Example"/>
+    </h3>
+
+    <p>
+        <fmt:setLocale value="fr_FR"/>
+        <fmt:bundle basename="com.baeldung.jstl.bundles.CustomMessage" prefix="verb.">
+            <fmt:message key="go"/><br/>
+            <fmt:message key="come"/><br/>
+            <fmt:message key="sit"/><br/>
+            <fmt:message key="stand"/><br/>
+        </fmt:bundle>
+    </p>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<fmt:setBundle> Example"/>
+    </h3>
+
+    <p>
+        <fmt:setLocale value="En"/>
+        <fmt:setBundle basename="com.baeldung.jstl.bundles.CustomMessage" var="lang"/>
+        <fmt:message key="verb.go" bundle="${lang}"/><br/>
+        <fmt:message key="verb.come" bundle="${lang}"/><br/>
+        <fmt:message key="verb.sit" bundle="${lang}"/><br/>
+        <fmt:message key="verb.stand" bundle="${lang}"/><br/>
+    </p>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<fmt:timeZone> Example"/>
+    </h3>
+    <table border="1" width="40%">
+        <tr>
+            <td width="100%" colspan="2">
+                <p align="center">
+                    <b>
+                        <font size="4">Time being formatted:
+                            <fmt:formatDate value="${now}" type="both"
+                                            timeStyle="long" dateStyle="long"/>
+                        </font>
+                    </b>
+                </p>
+            </td>
+        </tr>
+
+        <c:forEach var="zone"
+                   items="<%= java.util.TimeZone.getAvailableIDs()%>" end="4">
+            <tr>
+                <td width="51%">
+                    <c:out value="${zone}"/>
+                </td>
+                <td width="49%">
+                    <fmt:timeZone value="${zone}">
+                        <fmt:formatDate value="${now}" timeZone="${zn}"
+                                        type="both"/>
+                    </fmt:timeZone>
+                </td>
+            </tr>
+        </c:forEach>
+    </table>
+</div>
+
+<div>
+
+    <h3>
+        <c:out value="<fmt:setTimeZone> Example"/>
+    </h3>
+
+    <p>Current Date with Default Time Zone: <fmt:formatDate value="${now}"
+                                                            type="both" timeStyle="long" dateStyle="long"/></p>
+    <p>Change Time Zone to GMT+9</p>
+    <fmt:setTimeZone value="GMT+9"/>
+    <p>Date in Changed Zone: <fmt:formatDate value="${now}"
+                                             type="both" timeStyle="long" dateStyle="long"/></p>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<fmt:requestEncoding> Example"/>
+    </h3>
+    <fmt:requestEncoding value = "UTF-8" />
+    <fmt:setLocale value = "fr_FR"/>
+    <fmt:setBundle basename = "com.baeldung.jstl.bundles.CustomMessage" var = "lang"/>
+    <fmt:message key="verb.go" bundle="${lang}"/><br/>
+    <fmt:message key="verb.come" bundle="${lang}"/><br/>
+    <fmt:message key="verb.sit" bundle="${lang}"/><br/>
+    <fmt:message key="verb.stand" bundle="${lang}"/><br/>
+</div>
+</body>
+</html>

spring-mvc-xml/src/main/webapp/WEB-INF/view/function_tags.jsp

@@ -0,0 +1,151 @@
+<%@ page import="java.util.Random" %>
+<%@ page import="java.util.Date" %>
+<%@ page import="java.util.Calendar" %>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%@ taglib prefix = "fn"
+           uri = "http://java.sun.com/jsp/jstl/functions" %>
+<html>
+<head>
+    <c:set value="JSTL Function Tags Example" var="pageTitle"/>
+    <title>
+        <c:out value="${pageTitle}"/>
+    </title>
+</head>
+<body>
+<h1>
+    <c:out value="${pageTitle}"/>
+</h1>
+<c:set var = "string1" value = "This is first string"/>
+<c:set var = "string2" value = "This is second string with <tag>test XML</tag>"/>
+
+<div>
+    <h3>
+        <c:out value="fn:contains() Example"/>
+    </h3>
+    <c:if test = "${fn:contains(string1, 'first')}">
+    <p>Found 'first' in string<p>
+    </c:if>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:containsIgnoreCase() Example"/>
+    </h3>
+    <c:if test = "${fn:containsIgnoreCase(string1, 'first')}">
+    <p>Found 'first' string<p>
+    </c:if>
+
+    <c:if test = "${fn:containsIgnoreCase(string1, 'FIRST')}">
+    <p>Found 'FIRST' string<p>
+    </c:if>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:endsWith() Example"/>
+    </h3>
+    <c:if test = "${fn:endsWith(string1, 'string')}">
+    <p>String ends with 'string'<p>
+    </c:if>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:escapeXml() Example"/>
+    </h3>
+    <p>With escapeXml() Function:</p>
+    <p>string (1) : ${fn:escapeXml(string1)}</p>
+    <p>string (2) : ${fn:escapeXml(string2)}</p>
+
+    <p>Without escapeXml() Function:</p>
+    <p>string (1) : ${string1}</p>
+    <p>string (2) : ${string2}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:indexOf() Example"/>
+    </h3>
+    <p>Index (1) : ${fn:indexOf(string1, "first")}</p>
+    <p>Index (2) : ${fn:indexOf(string2, "second")}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:join() and fn:split() Example"/>
+    </h3>
+    <c:set var = "string3" value = "${fn:split(string1, ' ')}" />
+    <c:set var = "string4" value = "${fn:join(string3, '-')}" />
+    <p>Final String : ${string4}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:length() Example"/>
+    </h3>
+    <p>Length of String (1) : ${fn:length(string1)}</p>
+    <p>Length of String (2) : ${fn:length(string2)}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:replace() Example"/>
+    </h3>
+    <c:set var = "string3" value = "${fn:replace(string1, 'first', 'third')}" />
+    <p>Final String : ${string3}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:startsWith() Example"/>
+    </h3>
+    <c:if test = "${fn:startsWith(string1, 'This')}">
+        <p>String starts with 'This'</p>
+    </c:if>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:substring() Example"/>
+    </h3>
+    <c:set var = "string3" value = "${fn:substring(string1, 5, 15)}" />
+
+    <p>Final sub string : ${string3}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:substringAfter() Example"/>
+    </h3>
+    <c:set var = "string3" value = "${fn:substringAfter(string1, 'is')}" />
+
+    <p>Final sub string : ${string3}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:substringBefore() Example"/>
+    </h3>
+    <c:set var = "string3" value = "${fn:substringBefore(string1, 'is')}" />
+
+    <p>Final sub string : ${string3}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:toLowerCase() Example"/>
+    </h3>
+    <c:set var = "string3" value = "${fn:toLowerCase(string1)}" />
+
+    <p>Final string : ${string3}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:toUpperCase() Example"/>
+    </h3>
+    <c:set var = "string3" value = "${fn:toUpperCase(string1)}" />
+
+    <p>Final string : ${string3}</p>
+</div>
+<div>
+    <h3>
+        <c:out value="fn:trim() Example"/>
+    </h3>
+    <c:set var = "string1" value = "This is first String    "/>
+    <p>String (1) Length : ${fn:length(string1)}</p>
+
+    <c:set var = "string2" value = "${fn:trim(string1)}" />
+    <p>String (2) Length : ${fn:length(string2)}</p>
+    <p>Final string : "${string2}"</p>
+</div>
+</body>
+</html>

spring-mvc-xml/src/main/webapp/WEB-INF/view/sql_tags.jsp

@@ -0,0 +1,198 @@
+<%@ page import="java.util.Random" %>
+<%@ page import="java.util.Date" %>
+<%@ page import="java.util.Calendar" %>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %>
+<html>
+<head>
+    <c:set value="JSTL SQL Tags Example" var="pageTitle"/>
+    <title>
+        <c:out value="${pageTitle}"/>
+    </title>
+</head>
+<body>
+<h1>
+    <c:out value="${pageTitle}"/>
+</h1>
+<!--
+    sql:setDataSource Example
+-->
+<sql:setDataSource var="dataSource" driver="com.mysql.cj.jdbc.Driver"
+                   url="jdbc:mysql://localhost/test"
+                   user="root" password=""/>
+
+<div>
+
+    <h3>
+        <c:out value="<sql:query> Example"/>
+    </h3>
+    <sql:query dataSource="${dataSource}" var="result">
+        SELECT * from USERS;
+    </sql:query>
+    <table border="1" width="50%">
+        <tr>
+            <th>User ID</th>
+            <th>First Name</th>
+            <th>Last Name</th>
+            <th>Email</th>
+            <th>Registered</th>
+        </tr>
+
+        <c:forEach var="user" items="${result.rows}" varStatus="iterator">
+            <tr>
+                <td><c:out value="${iterator.index + 1}"/></td>
+                <td><c:out value="${user.first_name}"/></td>
+                <td><c:out value="${user.last_name}"/></td>
+                <td><c:out value="${user.email}"/></td>
+                <td><c:out value="${user.registered}"/></td>
+            </tr>
+        </c:forEach>
+    </table>
+</div>
+<div>
+    <h3>
+        <c:out value="<sql:update> Example"/>
+    </h3>
+
+    <sql:update dataSource="${dataSource}" var="count">
+        INSERT INTO USERS(first_name, last_name, email) VALUES ('Grace', 'Adams', 'gracea@domain.com');
+    </sql:update>
+    <sql:query dataSource="${dataSource}" var="result">
+        SELECT * from USERS;
+    </sql:query>
+    <table border="1" width="50%">
+        <tr>
+            <th>User ID</th>
+            <th>First Name</th>
+            <th>Last Name</th>
+            <th>Email</th>
+            <th>Registered</th>
+        </tr>
+
+        <c:forEach var="user" items="${result.rows}" varStatus="iterator">
+            <tr>
+                <td><c:out value="${iterator.index + 1}"/></td>
+                <td><c:out value="${user.first_name}"/></td>
+                <td><c:out value="${user.last_name}"/></td>
+                <td><c:out value="${user.email}"/></td>
+                <td><c:out value="${user.registered}"/></td>
+            </tr>
+        </c:forEach>
+    </table>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<sql:param> Example"/>
+    </h3>
+
+    <sql:update dataSource = "${dataSource}" var = "count">
+        DELETE FROM USERS WHERE email = ?
+        <sql:param value = "gracea@domain.com" />
+    </sql:update>
+    <sql:query dataSource="${dataSource}" var="result">
+        SELECT * from USERS;
+    </sql:query>
+    <table border="1" width="50%">
+        <tr>
+            <th>User ID</th>
+            <th>First Name</th>
+            <th>Last Name</th>
+            <th>Email</th>
+            <th>Registered</th>
+        </tr>
+
+        <c:forEach var="user" items="${result.rows}" varStatus="iterator">
+            <tr>
+                <td><c:out value="${iterator.index + 1}"/></td>
+                <td><c:out value="${user.first_name}"/></td>
+                <td><c:out value="${user.last_name}"/></td>
+                <td><c:out value="${user.email}"/></td>
+                <td><c:out value="${user.registered}"/></td>
+            </tr>
+        </c:forEach>
+    </table>
+
+</div>
+<div>
+
+    <h3>
+        <c:out value="<sql:dateParam> Example"/>
+    </h3>
+    <%
+        Date registered = new Date("2018/03/31");
+        String email = "patrick@baeldung.com";
+    %>
+
+    <sql:update dataSource = "${dataSource}" var = "count">
+        UPDATE Users SET registered = ? WHERE email = ?
+        <sql:dateParam value = "<%=registered%>" type = "DATE" />
+        <sql:param value = "<%=email%>" />
+    </sql:update>
+    <sql:query dataSource="${dataSource}" var="result">
+        SELECT * from USERS;
+    </sql:query>
+    <table border="1" width="50%">
+        <tr>
+            <th>User ID</th>
+            <th>First Name</th>
+            <th>Last Name</th>
+            <th>Email</th>
+            <th>Registered</th>
+        </tr>
+
+        <c:forEach var="user" items="${result.rows}" varStatus="iterator">
+            <tr>
+                <td><c:out value="${iterator.index + 1}"/></td>
+                <td><c:out value="${user.first_name}"/></td>
+                <td><c:out value="${user.last_name}"/></td>
+                <td><c:out value="${user.email}"/></td>
+                <td><c:out value="${user.registered}"/></td>
+            </tr>
+        </c:forEach>
+    </table>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<sql:transaction> Example"/>
+    </h3>
+    <sql:transaction dataSource = "${dataSource}">
+        <sql:update var = "count">
+            UPDATE Users SET first_name = 'Patrick-Ellis' WHERE email='patrick@baeldung.com'
+        </sql:update>
+
+        <sql:update var = "count">
+            UPDATE Users SET last_name = 'Nelson' WHERE email = 'patrick@baeldung.com'
+        </sql:update>
+
+        <sql:update var = "count">
+            INSERT INTO Users(first_name, last_name, email) VALUES ('Grace', 'Adams', 'gracea@domain.com');
+        </sql:update>
+    </sql:transaction>
+    <sql:query dataSource="${dataSource}" var="result">
+        SELECT * from USERS;
+    </sql:query>
+    <table border="1" width="50%">
+        <tr>
+            <th>User ID</th>
+            <th>First Name</th>
+            <th>Last Name</th>
+            <th>Email</th>
+            <th>Registered</th>
+        </tr>
+
+        <c:forEach var="user" items="${result.rows}" varStatus="iterator">
+            <tr>
+                <td><c:out value="${iterator.index + 1}"/></td>
+                <td><c:out value="${user.first_name}"/></td>
+                <td><c:out value="${user.last_name}"/></td>
+                <td><c:out value="${user.email}"/></td>
+                <td><c:out value="${user.registered}"/></td>
+            </tr>
+        </c:forEach>
+    </table>
+</div>
+</body>
+</html>

spring-mvc-xml/src/main/webapp/WEB-INF/view/xml_tags.jsp

@@ -0,0 +1,99 @@
+<%@ page import="java.util.Random" %>
+<%@ page import="java.util.Date" %>
+<%@ page import="java.util.Calendar" %>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>
+<html>
+<head>
+    <c:set value="JSTL XML Tags Example" var="pageTitle"/>
+    <title>
+        <c:out value="${pageTitle}"/>
+    </title>
+</head>
+<body>
+<h1>
+    <c:out value="${pageTitle}"/>
+</h1>
+<c:remove var="pageTitle"/>
+<p><c:out value="${pageTitle}"/></p>
+<div>
+    <h3>
+        <c:out value="<x:transform>, <x::param>, <x:parse>, <x:set>, <x:out>, and <x:if> Examples"/>
+    </h3>
+    <h3>Store Items:</h3>
+    <c:set var="xmltext">
+        <items>
+            <item>
+                <name>Steve Madden</name>
+                <category>Sneakers</category>
+                <price>34</price>
+            </item>
+
+            <item>
+                <name>Pearl Izumi</name>
+                <category>Sneakers</category>
+                <price>80</price>
+            </item>
+
+            <item>
+                <name>Katy Perry</name>
+                <category>Heels</category>
+                <price>72</price>
+            </item>
+        </items>
+    </c:set>
+
+    <x:parse xml="${xmltext}" var="output"/>
+    <b>The name of the first item listed in the store is</b>:
+    <x:out select="$output/items/item[1]/name"/> with price $<x:out select="$output/items/item[1]/price"/>
+    <br>
+
+    <x:set var="fragment" select="$output//item"/>
+    <b>The second item is </b>:
+    <c:out value="${fragment}"/>
+
+    <x:if select="$output//item">
+    Document has at least one
+    <item> element.
+        </x:if>
+        <br/>
+
+        <c:import url="/items_xml" var="xslt"/>
+        <x:transform xml="${xmltext}" xslt="${xslt}">
+            <x:param name="bgColor" value="blue"/>
+        </x:transform>
+</div>
+<div>
+
+    <h3>
+        <c:out value="<x:forEach> Example"/>
+    </h3>
+    <ul class="items">
+        <x:forEach select="$output/items/item/name" var="item">
+            <li>Item Name: <x:out select="$item"/></li>
+        </x:forEach>
+    </ul>
+</div>
+<div>
+    <h3>
+        <c:out value="<x:choose>, <x:when> and <x:otherwise> Example"/>
+    </h3>
+
+    <x:choose>
+        <x:when select="$output//item/category = 'Sneakers'">
+            Item category is Sneakers
+        </x:when>
+
+        <x:when select="$output//item/category = 'Heels'">
+            Item category is Heels
+        </x:when>
+
+        <x:otherwise>
+            Unknown category.
+        </x:otherwise>
+    </x:choose>
+</div>
+
+</body>
+</html>