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

This commit is contained in:
Dassi Orleando 2017-11-30 07:22:22 +01:00
parent 138e7fd492 ba566a81cb
commit 4bf2ec4ecd
344 changed files with 6768 additions and 337 deletions
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21
LICENSE Normal file
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@ -0,0 +1,21 @@
MIT License
Copyright (c) 2017 Eugen Paraschiv
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

1
algorithms/README.md
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@ -14,3 +14,4 @@
- [Bubble Sort in Java](http://www.baeldung.com/java-bubble-sort)
- [Introduction to JGraphT](http://www.baeldung.com/jgrapht)
- [Introduction to Minimax Algorithm](http://www.baeldung.com/java-minimax-algorithm)
- [How to Calculate Levenshtein Distance in Java?](http://www.baeldung.com/java-levenshtein-distance)

224
apache-poi/src/main/java/com/baeldung/poi/powerpoint/PowerPointHelper.java Normal file
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package com.baeldung.poi.powerpoint;
import org.apache.poi.sl.usermodel.AutoNumberingScheme;
import org.apache.poi.sl.usermodel.PictureData;
import org.apache.poi.sl.usermodel.TableCell;
import org.apache.poi.sl.usermodel.TextParagraph;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xslf.usermodel.*;
import java.awt.*;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Helper class for the PowerPoint presentation creation
*/
public class PowerPointHelper {
/**
* Read an existing presentation
*
* @param fileLocation
* File location of the presentation
* @return instance of {@link XMLSlideShow}
* @throws IOException
*/
public XMLSlideShow readingExistingSlideShow(String fileLocation) throws IOException {
return new XMLSlideShow(new FileInputStream(fileLocation));
}
/**
* Create a sample presentation
*
* @param fileLocation
* File location of the presentation
* @throws IOException
*/
public void createPresentation(String fileLocation) throws IOException {
// Create presentation
XMLSlideShow ppt = new XMLSlideShow();
XSLFSlideMaster defaultMaster = ppt.getSlideMasters().get(0);
// Retriving the slide layout
XSLFSlideLayout layout = defaultMaster.getLayout(SlideLayout.TITLE_ONLY);
// Creating the 1st slide
XSLFSlide slide1 = ppt.createSlide(layout);
XSLFTextShape title = slide1.getPlaceholder(0);
// Clearing text to remove the predefined one in the template
title.clearText();
XSLFTextParagraph p = title.addNewTextParagraph();
XSLFTextRun r1 = p.addNewTextRun();
r1.setText("Baeldung");
r1.setFontColor(new Color(78, 147, 89));
r1.setFontSize(48.);
// Add Image
ClassLoader classLoader = getClass().getClassLoader();
byte[] pictureData = IOUtils.toByteArray(new FileInputStream(classLoader.getResource("logo-leaf.png").getFile()));
XSLFPictureData pd = ppt.addPicture(pictureData, PictureData.PictureType.PNG);
XSLFPictureShape picture = slide1.createPicture(pd);
picture.setAnchor(new Rectangle(320, 230, 100, 92));
// Creating 2nd slide
layout = defaultMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);
XSLFSlide slide2 = ppt.createSlide(layout);
// setting the tile
title = slide2.getPlaceholder(0);
title.clearText();
XSLFTextRun r = title.addNewTextParagraph().addNewTextRun();
r.setText("Baeldung");
// Adding the link
XSLFHyperlink link = r.createHyperlink();
link.setAddress("http://www.baeldung.com");
// setting the content
XSLFTextShape content = slide2.getPlaceholder(1);
content.clearText(); // unset any existing text
content.addNewTextParagraph().addNewTextRun().setText("First paragraph");
content.addNewTextParagraph().addNewTextRun().setText("Second paragraph");
content.addNewTextParagraph().addNewTextRun().setText("Third paragraph");
// Creating 3rd slide - List
layout = defaultMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);
XSLFSlide slide3 = ppt.createSlide(layout);
title = slide3.getPlaceholder(0);
title.clearText();
r = title.addNewTextParagraph().addNewTextRun();
r.setText("Lists");
content = slide3.getPlaceholder(1);
content.clearText();
XSLFTextParagraph p1 = content.addNewTextParagraph();
p1.setIndentLevel(0);
p1.setBullet(true);
r1 = p1.addNewTextRun();
r1.setText("Bullet");
// the next three paragraphs form an auto-numbered list
XSLFTextParagraph p2 = content.addNewTextParagraph();
p2.setBulletAutoNumber(AutoNumberingScheme.alphaLcParenRight, 1);
p2.setIndentLevel(1);
XSLFTextRun r2 = p2.addNewTextRun();
r2.setText("Numbered List Item - 1");
// Creating 4th slide
XSLFSlide slide4 = ppt.createSlide();
createTable(slide4);
// Save presentation
FileOutputStream out = new FileOutputStream(fileLocation);
ppt.write(out);
out.close();
// Closing presentation
ppt.close();
}
/**
* Delete a slide from the presentation
*
* @param ppt
* The presentation
* @param slideNumber
* The number of the slide to be deleted (0-based)
*/
public void deleteSlide(XMLSlideShow ppt, int slideNumber) {
ppt.removeSlide(slideNumber);
}
/**
* Re-order the slides inside a presentation
*
* @param ppt
* The presentation
* @param slideNumber
* The number of the slide to move
* @param newSlideNumber
* The new position of the slide (0-base)
*/
public void reorderSlide(XMLSlideShow ppt, int slideNumber, int newSlideNumber) {
List<XSLFSlide> slides = ppt.getSlides();
XSLFSlide secondSlide = slides.get(slideNumber);
ppt.setSlideOrder(secondSlide, newSlideNumber);
}
/**
* Retrieve the placeholder inside a slide
*
* @param slide
* The slide
* @return List of placeholder inside a slide
*/
public List<XSLFShape> retrieveTemplatePlaceholders(XSLFSlide slide) {
List<XSLFShape> placeholders = new ArrayList<>();
for (XSLFShape shape : slide.getShapes()) {
if (shape instanceof XSLFAutoShape) {
placeholders.add(shape);
}
}
return placeholders;
}
/**
* Create a table
*
* @param slide
* Slide
*/
private void createTable(XSLFSlide slide) {
XSLFTable tbl = slide.createTable();
tbl.setAnchor(new Rectangle(50, 50, 450, 300));
int numColumns = 3;
int numRows = 5;
// header
XSLFTableRow headerRow = tbl.addRow();
headerRow.setHeight(50);
for (int i = 0; i < numColumns; i++) {
XSLFTableCell th = headerRow.addCell();
XSLFTextParagraph p = th.addNewTextParagraph();
p.setTextAlign(TextParagraph.TextAlign.CENTER);
XSLFTextRun r = p.addNewTextRun();
r.setText("Header " + (i + 1));
r.setBold(true);
r.setFontColor(Color.white);
th.setFillColor(new Color(79, 129, 189));
th.setBorderWidth(TableCell.BorderEdge.bottom, 2.0);
th.setBorderColor(TableCell.BorderEdge.bottom, Color.white);
// all columns are equally sized
tbl.setColumnWidth(i, 150);
}
// data
for (int rownum = 0; rownum < numRows; rownum++) {
XSLFTableRow tr = tbl.addRow();
tr.setHeight(50);
for (int i = 0; i < numColumns; i++) {
XSLFTableCell cell = tr.addCell();
XSLFTextParagraph p = cell.addNewTextParagraph();
XSLFTextRun r = p.addNewTextRun();
r.setText("Cell " + (i * rownum + 1));
if (rownum % 2 == 0) {
cell.setFillColor(new Color(208, 216, 232));
} else {
cell.setFillColor(new Color(233, 247, 244));
}
}
}
}
}

77
apache-poi/src/test/java/com/baeldung/poi/powerpoint/PowerPointIntegrationTest.java Normal file
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package com.baeldung.poi.powerpoint;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFShape;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import java.io.File;
import java.util.List;
public class PowerPointIntegrationTest {
private PowerPointHelper pph;
private String fileLocation;
private static final String FILE_NAME = "presentation.pptx";
@Before
public void setUp() throws Exception {
File currDir = new File(".");
String path = currDir.getAbsolutePath();
fileLocation = path.substring(0, path.length() - 1) + FILE_NAME;
pph = new PowerPointHelper();
pph.createPresentation(fileLocation);
}
@Test
public void whenReadingAPresentation_thenOK() throws Exception {
XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
Assert.assertNotNull(xmlSlideShow);
Assert.assertEquals(4, xmlSlideShow.getSlides().size());
}
@Test
public void whenRetrievingThePlaceholdersForEachSlide_thenOK() throws Exception {
XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
List<XSLFShape> onlyTitleSlidePlaceholders = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(0));
List<XSLFShape> titleAndBodySlidePlaceholders = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(1));
List<XSLFShape> emptySlidePlaceholdes = pph.retrieveTemplatePlaceholders(xmlSlideShow.getSlides().get(3));
Assert.assertEquals(1, onlyTitleSlidePlaceholders.size());
Assert.assertEquals(2, titleAndBodySlidePlaceholders.size());
Assert.assertEquals(0, emptySlidePlaceholdes.size());
}
@Test
public void whenSortingSlides_thenOK() throws Exception {
XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
XSLFSlide slide4 = xmlSlideShow.getSlides().get(3);
pph.reorderSlide(xmlSlideShow, 3, 1);
Assert.assertEquals(slide4, xmlSlideShow.getSlides().get(1));
}
@Test
public void givenPresentation_whenDeletingASlide_thenOK() throws Exception {
XMLSlideShow xmlSlideShow = pph.readingExistingSlideShow(fileLocation);
pph.deleteSlide(xmlSlideShow, 3);
Assert.assertEquals(3, xmlSlideShow.getSlides().size());
}
@After
public void tearDown() throws Exception {
File testFile = new File(fileLocation);
if (testFile.exists()) {
testFile.delete();
}
pph = null;
}
}

3
apache-spark/README.md Normal file
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### Relevant articles
- [Introduction to Apache Spark](http://www.baeldung.com/apache-spark)

8
bootique/dependency-reduced-pom.xml
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@ -28,8 +28,14 @@
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<version>4.12</version>
<scope>test</scope>
<exclusions>
<exclusion>
<artifactId>hamcrest-core</artifactId>
<groupId>org.hamcrest</groupId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<dependencyManagement>

19
cas/cas-secured-app/pom.xml
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@ -65,6 +65,24 @@
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven-surefire-plugin.version}</version>
<configuration>
<forkCount>3</forkCount>
<reuseForks>true</reuseForks>
<excludes>
<exclude>**/*IntegrationTest.java</exclude>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*ManualTest.java</exclude>
<exclude>**/JdbcTest.java</exclude>
<exclude>**/*LiveTest.java</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
@ -107,4 +125,5 @@
</pluginRepositories>
</project>

2
cas/cas-secured-app/src/test/java/com/baeldung/cassecuredapp/CasSecuredAppApplicationTests.java → cas/cas-secured-app/src/test/java/com/baeldung/cassecuredapp/CasSecuredAppApplicationIntegrationTest.java
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@ -7,7 +7,7 @@ import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class CasSecuredAppApplicationTests {
public class CasSecuredAppApplicationIntegrationTest {
@Test
public void contextLoads() {

2
cas/cas-server/src/main/resources/application.properties
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@ -109,7 +109,7 @@ cas.authn.jdbc.query[0].sql=SELECT * FROM users WHERE email = ?
cas.authn.jdbc.query[0].url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
cas.authn.jdbc.query[0].dialect=org.hibernate.dialect.MySQLDialect
cas.authn.jdbc.query[0].user=root
cas.authn.jdbc.query[0].password=
cas.authn.jdbc.query[0].password=root
cas.authn.jdbc.query[0].ddlAuto=none
#cas.authn.jdbc.query[0].driverClass=com.mysql.jdbc.Driver
cas.authn.jdbc.query[0].driverClass=com.mysql.cj.jdbc.Driver

16
cas/cas-server/src/main/resources/create_test_db_and_users_tbl.sql Normal file
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-- Dumping database structure for test
CREATE DATABASE IF NOT EXISTS `test` /*!40100 DEFAULT CHARACTER SET latin1 */;
USE `test`;
-- Dumping structure for table test.users
CREATE TABLE IF NOT EXISTS `users` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`email` varchar(50) DEFAULT NULL,
`password` text DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=latin1;
/*!40000 ALTER TABLE `users` DISABLE KEYS */;
INSERT INTO `users` (`id`, `email`, `password`) VALUES
(1, 'test@test.com', 'Mellon');
/*!40000 ALTER TABLE `users` ENABLE KEYS */;

2
core-java-8/README.md
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@ -30,3 +30,5 @@
- [The Difference Between map() and flatMap()](http://www.baeldung.com/java-difference-map-and-flatmap)
- [Merging Streams in Java](http://www.baeldung.com/java-merge-streams)
- [“Stream has already been operated upon or closed” Exception in Java](http://www.baeldung.com/java-stream-operated-upon-or-closed-exception)
- [Display All Time Zones With GMT And UTC in Java](http://www.baeldung.com/java-time-zones)
- [Copy a File with Java](http://www.baeldung.com/java-copy-file)

5
core-java-8/src/main/java/com/baeldung/annotations/ClassWithAnnotation.java Normal file
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package com.baeldung.annotations;
@Deprecated
class ClassWithAnnotation {
}

9
core-java-8/src/main/java/com/baeldung/annotations/ClassWithDeprecatedMethod.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.annotations;
class ClassWithDeprecatedMethod {
@Deprecated
static void deprecatedMethod() {
}
}

11
core-java-8/src/main/java/com/baeldung/annotations/ClassWithSafeVarargs.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.annotations;
class ClassWithSafeVarargs<T> {
@SafeVarargs
final void iterateOverVarargs(T... args) {
for (T x : args) {
// do stuff with x
}
}
}

9
core-java-8/src/main/java/com/baeldung/annotations/ClassWithSuppressWarnings.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.annotations;
class ClassWithSuppressWarnings {
@SuppressWarnings("deprecation")
void useDeprecatedMethod() {
ClassWithDeprecatedMethod.deprecatedMethod(); // no warning is generated here
}
}

8
core-java-8/src/main/java/com/baeldung/annotations/IntConsumer.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.annotations;
@FunctionalInterface
interface IntConsumer {
void accept(Integer number);
}

8
core-java-8/src/main/java/com/baeldung/annotations/Interval.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.annotations;
import java.lang.annotation.Repeatable;
@Repeatable(Intervals.class)
@interface Interval {
int hour() default 1;
}

9
core-java-8/src/main/java/com/baeldung/annotations/IntervalUsage.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.annotations;
public class IntervalUsage {
@Interval(hour = 17)
@Interval(hour = 13)
void doPeriodicCleanup() {
}
}

5
core-java-8/src/main/java/com/baeldung/annotations/Intervals.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.annotations;
@interface Intervals {
Interval[] value();
}

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core-java-8/src/main/java/com/baeldung/annotations/MyAnnotation.java Normal file
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@ -0,0 +1,11 @@
package com.baeldung.annotations;
import java.lang.annotation.*;
@Inherited
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.LOCAL_VARIABLE, ElementType.FIELD})
@interface MyAnnotation {
}

16
core-java-8/src/main/java/com/baeldung/annotations/MyAnnotationTarget.java Normal file
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@ -0,0 +1,16 @@
package com.baeldung.annotations;
class MyAnnotationTarget {
// this is OK
@MyAnnotation
String someField;
// @MyAnnotation <- this is invalid usage!
void doSomething() {
// this also works
@MyAnnotation
String localVariable;
}
}

6
core-java-8/src/main/java/com/baeldung/annotations/MyOperation.java Normal file
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@ -0,0 +1,6 @@
package com.baeldung.annotations;
interface MyOperation {
void perform();
}

9
core-java-8/src/main/java/com/baeldung/annotations/MyOperationImpl.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung.annotations;
class MyOperationImpl implements MyOperation {
@Override
public void perform() {
}
}

55
core-java-8/src/main/java/com/baeldung/timezonedisplay/TimezoneDisplay.java Normal file
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@ -0,0 +1,55 @@
package com.baeldung.timezonedisplay;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.util.Comparator;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
public class TimezoneDisplay {
public enum OffsetBase {
GMT, UTC
}
public List<String> getTimeZoneList(OffsetBase base) {
Set<String> availableZoneIds = ZoneId.getAvailableZoneIds();
LocalDateTime now = LocalDateTime.now();
return availableZoneIds
.stream()
.map(ZoneId::of)
.sorted(new ZoneComparator())
.map(id -> String.format("(%s%s) %s", base, getOffset(now, id), id.getId()))
.collect(Collectors.toList());
}
private String getOffset(LocalDateTime dateTime, ZoneId id) {
return dateTime
.atZone(id)
.getOffset()
.getId()
.replace("Z", "+00:00");
}
private class ZoneComparator implements Comparator<ZoneId> {
@Override
public int compare(ZoneId zoneId1, ZoneId zoneId2) {
LocalDateTime now = LocalDateTime.now();
ZoneOffset offset1 = now
.atZone(zoneId1)
.getOffset();
ZoneOffset offset2 = now
.atZone(zoneId2)
.getOffset();
return offset1.compareTo(offset2);
}
}
}

18
core-java-8/src/main/java/com/baeldung/timezonedisplay/TimezoneDisplayApp.java Normal file
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@ -0,0 +1,18 @@
package com.baeldung.timezonedisplay;
import java.util.List;
public class TimezoneDisplayApp {
public static void main(String... args) {
TimezoneDisplay display = new TimezoneDisplay();
System.out.println("Time zones in UTC:");
List<String> utc = display.getTimeZoneList(TimezoneDisplay.OffsetBase.UTC);
utc.forEach(System.out::println);
System.out.println("Time zones in GMT:");
List<String> gmt = display.getTimeZoneList(TimezoneDisplay.OffsetBase.GMT);
gmt.forEach(System.out::println);
}
}

39
core-java-9/src/main/java/com/baeldung/java9/datetime/DateToLocalDateConverter.java Normal file
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@ -0,0 +1,39 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.Instant;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows a way to convert java.util.Date into java.time.LocalDate.
*
* @author abialas
*
*/
public class DateToLocalDateConverter {
public static LocalDate convertToLocalDateViaInstant(Date dateToConvert) {
return dateToConvert.toInstant()
.atZone(ZoneId.systemDefault())
.toLocalDate();
}
public static LocalDate convertToLocalDateViaSqlDate(Date dateToConvert) {
return new java.sql.Date(dateToConvert.getTime()).toLocalDate();
}
public static LocalDate convertToLocalDateViaMilisecond(Date dateToConvert) {
return Instant.ofEpochMilli(dateToConvert.getTime())
.atZone(ZoneId.systemDefault())
.toLocalDate();
}
public static LocalDate convertToLocalDate(Date dateToConvert) {
return LocalDate.ofInstant(dateToConvert.toInstant(), ZoneId.systemDefault());
}
}

39
core-java-9/src/main/java/com/baeldung/java9/datetime/DateToLocalDateTimeConverter.java Normal file
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@ -0,0 +1,39 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows a way to convert java.util.Date into java.time.LocalDateTime.
*
* @author abialas
*
*/
public class DateToLocalDateTimeConverter {
public static LocalDateTime convertToLocalDateTimeViaInstant(Date dateToConvert) {
return dateToConvert.toInstant()
.atZone(ZoneId.systemDefault())
.toLocalDateTime();
}
public static LocalDateTime convertToLocalDateTimeViaSqlTimestamp(Date dateToConvert) {
return new java.sql.Timestamp(dateToConvert.getTime()).toLocalDateTime();
}
public static LocalDateTime convertToLocalDateTimeViaMilisecond(Date dateToConvert) {
return Instant.ofEpochMilli(dateToConvert.getTime())
.atZone(ZoneId.systemDefault())
.toLocalDateTime();
}
public static LocalDateTime convertToLocalDateTime(Date dateToConvert) {
return LocalDateTime.ofInstant(dateToConvert.toInstant(), ZoneId.systemDefault());
}
}

27
core-java-9/src/main/java/com/baeldung/java9/datetime/LocalDateTimeToDateConverter.java Normal file
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@ -0,0 +1,27 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows different ways of converting java.time.LocalDateTime into java.util.Date.
*
* @author abialas
*
*/
public class LocalDateTimeToDateConverter {
public static Date convertToDateViaSqlTimestamp(LocalDateTime dateToConvert) {
return java.sql.Timestamp.valueOf(dateToConvert);
}
public static Date convertToDateViaInstant(LocalDateTime dateToConvert) {
return java.util.Date.from(dateToConvert.atZone(ZoneId.systemDefault())
.toInstant());
}
}

28
core-java-9/src/main/java/com/baeldung/java9/datetime/LocalDateToDateConverter.java Normal file
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@ -0,0 +1,28 @@
/**
*
*/
package com.baeldung.java9.datetime;
import java.time.LocalDate;
import java.time.ZoneId;
import java.util.Date;
/**
* Class which shows different ways of converting java.time.LocalDate into java.util.Date.
*
* @author abialas
*
*/
public class LocalDateToDateConverter {
public static Date convertToDateViaSqlDate(LocalDate dateToConvert) {
return java.sql.Date.valueOf(dateToConvert);
}
public static Date convertToDateViaInstant(LocalDate dateToConvert) {
return java.util.Date.from(dateToConvert.atStartOfDay()
.atZone(ZoneId.systemDefault())
.toInstant());
}
}

89
core-java-9/src/test/java/com/baeldung/java9/datetime/DateToLocalDateConverterTest.java Normal file
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@ -0,0 +1,89 @@
/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDate;
import java.time.temporal.ChronoField;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
import com.baeldung.java9.datetime.DateToLocalDateConverter;
/**
* JUnits for {@link DateToLocalDateConverter} class.
*
* @author abialas
*
*/
public class DateToLocalDateConverterTest {
@Test
public void shouldReturn10thNovember2010WhenConvertViaInstant() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDate = DateToLocalDateConverter.convertToLocalDateViaInstant(dateToConvert);
// then
assertEquals(2010, localDate.get(ChronoField.YEAR));
assertEquals(11, localDate.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDate.get(ChronoField.DAY_OF_MONTH));
}
@Test
public void shouldReturn10thNovember2010WhenConvertViaMiliseconds() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDate = DateToLocalDateConverter.convertToLocalDateViaMilisecond(dateToConvert);
// then
assertEquals(2010, localDate.get(ChronoField.YEAR));
assertEquals(11, localDate.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDate.get(ChronoField.DAY_OF_MONTH));
}
@Test
public void shouldReturn10thNovember2010WhenConvertViaSqlDate() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDate = DateToLocalDateConverter.convertToLocalDateViaSqlDate(dateToConvert);
// then
assertEquals(2010, localDate.get(ChronoField.YEAR));
assertEquals(11, localDate.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDate.get(ChronoField.DAY_OF_MONTH));
}
@Test
public void shouldReturn10thNovember2010WhenConvertToLocalDate() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10);
Date dateToConvert = calendar.getTime();
// when
LocalDate localDateTime = DateToLocalDateConverter.convertToLocalDate(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
}
}

97
core-java-9/src/test/java/com/baeldung/java9/datetime/DateToLocalDateTimeConverterTest.java Normal file
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@ -0,0 +1,97 @@
/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDateTime;
import java.time.temporal.ChronoField;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
import com.baeldung.java9.datetime.DateToLocalDateTimeConverter;
/**
* JUnits for {@link DateToLocalDateTimeConverter} class.
*
* @author abialas
*
*/
public class DateToLocalDateTimeConverterTest {
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaInstant() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTimeViaInstant(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaMiliseconds() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTimeViaMilisecond(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaSqlTimestamp() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTimeViaSqlTimestamp(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertToLocalDateTime() {
// given
Calendar calendar = Calendar.getInstance();
calendar.set(2010, 10, 10, 8, 20);
Date dateToConvert = calendar.getTime();
// when
LocalDateTime localDateTime = DateToLocalDateTimeConverter.convertToLocalDateTime(dateToConvert);
// then
assertEquals(2010, localDateTime.get(ChronoField.YEAR));
assertEquals(11, localDateTime.get(ChronoField.MONTH_OF_YEAR));
assertEquals(10, localDateTime.get(ChronoField.DAY_OF_MONTH));
assertEquals(8, localDateTime.get(ChronoField.HOUR_OF_DAY));
assertEquals(20, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
}
}

61
core-java-9/src/test/java/com/baeldung/java9/datetime/LocalDateTimeToDateConverterTest.java Normal file
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@ -0,0 +1,61 @@
/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDateTime;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
/**
*
* JUnits for {@link LocalDateTimeToDateConverter} class.
*
* @author abialas
*
*/
public class LocalDateTimeToDateConverterTest {
@Test
public void shouldReturn10thNovember2010time8hour20minWhenConvertViaInstant() {
// given
LocalDateTime dateToConvert = LocalDateTime.of(2010, 11, 10, 8, 20);
// when
Date date = LocalDateTimeToDateConverter.convertToDateViaInstant(dateToConvert);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
// then
assertEquals(2010, calendar.get(Calendar.YEAR));
assertEquals(10, calendar.get(Calendar.MONTH));
assertEquals(10, calendar.get(Calendar.DAY_OF_MONTH));
assertEquals(8, calendar.get(Calendar.HOUR));
assertEquals(20, calendar.get(Calendar.MINUTE));
assertEquals(0, calendar.get(Calendar.SECOND));
}
@Test
public void shouldReturn10thNovember2010WhenConvertViaSqlTimestamp() {
// given
LocalDateTime dateToConvert = LocalDateTime.of(2010, 11, 10, 8, 20);
// when
Date date = LocalDateTimeToDateConverter.convertToDateViaSqlTimestamp(dateToConvert);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
// then
assertEquals(2010, calendar.get(Calendar.YEAR));
assertEquals(10, calendar.get(Calendar.MONTH));
assertEquals(10, calendar.get(Calendar.DAY_OF_MONTH));
assertEquals(8, calendar.get(Calendar.HOUR));
assertEquals(20, calendar.get(Calendar.MINUTE));
assertEquals(0, calendar.get(Calendar.SECOND));
}
}

55
core-java-9/src/test/java/com/baeldung/java9/datetime/LocalDateToDateConverterTest.java Normal file
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@ -0,0 +1,55 @@
/**
*
*/
package com.baeldung.java9.datetime;
import static org.junit.Assert.assertEquals;
import java.time.LocalDate;
import java.util.Calendar;
import java.util.Date;
import org.junit.Test;
/**
*
* JUnits for {@link LocalDateToDateConverter} class.
*
* @author abialas
*
*/
public class LocalDateToDateConverterTest {
@Test
public void shouldReturn10thNovember2010WhenConvertViaInstant() {
// given
LocalDate dateToConvert = LocalDate.of(2010, 11, 10);
// when
Date date = LocalDateToDateConverter.convertToDateViaInstant(dateToConvert);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
// then
assertEquals(2010, calendar.get(Calendar.YEAR));
assertEquals(10, calendar.get(Calendar.MONTH));
assertEquals(10, calendar.get(Calendar.DAY_OF_MONTH));
}
@Test
public void shouldReturn10thNovember2010WhenConvertViaSqlDate() {
// given
LocalDate dateToConvert = LocalDate.of(2010, 11, 10);
// when
Date date = LocalDateToDateConverter.convertToDateViaSqlDate(dateToConvert);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
// then
assertEquals(2010, calendar.get(Calendar.YEAR));
assertEquals(10, calendar.get(Calendar.MONTH));
assertEquals(10, calendar.get(Calendar.DAY_OF_MONTH));
}
}

1
core-java-concurrency/README.md
View File

@ -30,3 +30,4 @@
- [Guide to Volatile Keyword in Java](http://www.baeldung.com/java-volatile)
- [Overview of the java.util.concurrent](http://www.baeldung.com/java-util-concurrent)
- [Semaphores in Java](http://www.baeldung.com/java-semaphore)
- [Daemon Threads in Java](http://www.baeldung.com/java-daemon-thread)

1
core-java-concurrency/src/main/java/com/baeldung/concurrent/daemon/NewThread.java
View File

@ -3,7 +3,6 @@ package com.baeldung.concurrent.daemon;
public class NewThread extends Thread {
public void run() {
long startTime = System.currentTimeMillis();
while (true) {
for (int i = 0; i < 10; i++) {

52
core-java-concurrency/src/main/java/com/baeldung/concurrent/stopping/ControlSubThread.java Normal file
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@ -0,0 +1,52 @@
package com.baeldung.concurrent.stopping;
import java.util.concurrent.atomic.AtomicBoolean;
public class ControlSubThread implements Runnable {
private Thread worker;
private int interval = 100;
private AtomicBoolean running = new AtomicBoolean(false);
private AtomicBoolean stopped = new AtomicBoolean(true);
public ControlSubThread(int sleepInterval) {
interval = sleepInterval;
}
public void start() {
worker = new Thread(this);
worker.start();
}
public void stop() {
running.set(false);
}
public void interrupt() {
running.set(false);
worker.interrupt();
}
boolean isRunning() {
return running.get();
}
boolean isStopped() {
return stopped.get();
}
public void run() {
running.set(true);
stopped.set(false);
while (running.get()) {
try {
Thread.sleep(interval);
} catch (InterruptedException e) {
// no-op, just loop again
}
// do something
}
stopped.set(true);
}
}

54
core-java-concurrency/src/test/java/com/baeldung/concurrent/stopping/StopThreadTest.java Normal file
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@ -0,0 +1,54 @@
package com.baeldung.concurrent.stopping;
import com.jayway.awaitility.Awaitility;
import org.junit.Test;
import java.util.concurrent.TimeUnit;
import static com.jayway.awaitility.Awaitility.await;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class StopThreadTest {
@Test
public void whenStoppedThreadIsStopped() throws InterruptedException {
int interval = 100;
ControlSubThread controlSubThread = new ControlSubThread(interval);
controlSubThread.start();
// Give things a chance to get set up
Thread.sleep(interval);
assertTrue(controlSubThread.isRunning());
assertFalse(controlSubThread.isStopped());
// Stop it and make sure the flags have been reversed
controlSubThread.stop();
await()
.until(() -> assertTrue(controlSubThread.isStopped()));
}
@Test
public void whenInterruptedThreadIsStopped() throws InterruptedException {
int interval = 5000;
ControlSubThread controlSubThread = new ControlSubThread(interval);
controlSubThread.start();
// Give things a chance to get set up
Thread.sleep(100);
assertTrue(controlSubThread.isRunning());
assertFalse(controlSubThread.isStopped());
// Stop it and make sure the flags have been reversed
controlSubThread.interrupt();
// Wait less than the time we would normally sleep, and make sure we exited.
Awaitility.await()
.atMost(interval/ 10, TimeUnit.MILLISECONDS)
.until(controlSubThread::isStopped);
}
}

26
core-java-sun/.gitignore vendored Normal file
View File

@ -0,0 +1,26 @@
*.class
0.*
#folders#
/target
/neoDb*
/data
/src/main/webapp/WEB-INF/classes
*/META-INF/*
.resourceCache
# Packaged files #
*.jar
*.war
*.ear
# Files generated by integration tests
*.txt
backup-pom.xml
/bin/
/temp
#IntelliJ specific
.idea/
*.iml

6
core-java-sun/README.md Normal file
View File

@ -0,0 +1,6 @@
=========
## Core Java Cookbooks and Examples
### Relevant Articles:
- [Creating a Java Compiler Plugin](http://www.baeldung.com/java-build-compiler-plugin)

489
core-java-sun/pom.xml Normal file
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@ -0,0 +1,489 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>core-java-sun</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>core-java-sun</name>
<dependencies>
<!-- utils -->
<dependency>
<groupId>net.sourceforge.collections</groupId>
<artifactId>collections-generic</artifactId>
<version>${collections-generic.version}</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${commons-io.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>${commons-math3.version}</version>
</dependency>
<dependency>
<groupId>org.decimal4j</groupId>
<artifactId>decimal4j</artifactId>
<version>${decimal4j.version}</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>${bouncycastle.version}</version>
</dependency>
<dependency>
<groupId>org.unix4j</groupId>
<artifactId>unix4j-command</artifactId>
<version>${unix4j.version}</version>
</dependency>
<dependency>
<groupId>com.googlecode.grep4j</groupId>
<artifactId>grep4j</artifactId>
<version>${grep4j.version}</version>
</dependency>
<!-- web -->
<!-- marshalling -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!-- logging -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<!-- <scope>runtime</scope> -->
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
<!-- <scope>runtime</scope> --> <!-- some spring dependencies need to compile against jcl -->
</dependency>
<dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
<version>${org.slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<!-- test scoped -->
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-all</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
<version>${org.hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-library</artifactId>
<version>${org.hamcrest.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>${mockito.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.jayway.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>${avaitility.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>${commons-codec.version}</version>
</dependency>
<dependency>
<groupId>org.javamoney</groupId>
<artifactId>moneta</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.owasp.esapi</groupId>
<artifactId>esapi</artifactId>
<version>2.1.0.1</version>
</dependency>
<dependency>
<groupId>com.sun.messaging.mq</groupId>
<artifactId>fscontext</artifactId>
<version>${fscontext.version}</version>
</dependency>
<dependency>
<groupId>com.codepoetics</groupId>
<artifactId>protonpack</artifactId>
<version>${protonpack.version}</version>
</dependency>
<dependency>
<groupId>one.util</groupId>
<artifactId>streamex</artifactId>
<version>${streamex.version}</version>
</dependency>
<dependency>
<groupId>io.vavr</groupId>
<artifactId>vavr</artifactId>
<version>${vavr.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>1.19</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<dependency>
<groupId>com.sun</groupId>
<artifactId>tools</artifactId>
<version>1.8.0</version>
<scope>system</scope>
<systemPath>${java.home}/../lib/tools.jar</systemPath>
</dependency>
</dependencies>
<build>
<finalName>core-java</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/*LiveTest.java</exclude>
<exclude>**/*IntegrationTest.java</exclude>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*ManualTest.java</exclude>
</excludes>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>libs/</classpathPrefix>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<archiveBaseDirectory>${project.basedir}</archiveBaseDirectory>
<archive>
<manifest>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<shadedArtifactAttached>true</shadedArtifactAttached>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.jolira</groupId>
<artifactId>onejar-maven-plugin</artifactId>
<executions>
<execution>
<configuration>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
<attachToBuild>true</attachToBuild>
<filename>${project.build.finalName}-onejar.${project.packaging}</filename>
</configuration>
<goals>
<goal>one-jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>spring-boot</classifier>
<mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.6.0</version>
<configuration>
<executable>java</executable>
<mainClass>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</mainClass>
<arguments>
<argument>-Xmx300m</argument>
<argument>-XX:+UseParallelGC</argument>
<argument>-classpath</argument>
<classpath />
<argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
</arguments>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>integration</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<executions>
<execution>
<phase>integration-test</phase>
<goals>
<goal>test</goal>
</goals>
<configuration>
<excludes>
<exclude>**/*ManualTest.java</exclude>
</excludes>
<includes>
<include>**/*IntegrationTest.java</include>
</includes>
</configuration>
</execution>
</executions>
<configuration>
<systemPropertyVariables>
<test.mime>json</test.mime>
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>run-benchmarks</id>
<!-- <phase>integration-test</phase> -->
<phase>none</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<classpathScope>test</classpathScope>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<properties>
<!-- marshalling -->
<jackson.version>2.8.5</jackson.version>
<!-- logging -->
<org.slf4j.version>1.7.21</org.slf4j.version>
<logback.version>1.1.7</logback.version>
<!-- util -->
<guava.version>23.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>
<commons-math3.version>3.6.1</commons-math3.version>
<decimal4j.version>1.0.3</decimal4j.version>
<commons-io.version>2.5</commons-io.version>
<commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version>
<unix4j.version>0.4</unix4j.version>
<grep4j.version>1.8.7</grep4j.version>
<lombok.version>1.16.12</lombok.version>
<fscontext.version>4.6-b01</fscontext.version>
<protonpack.version>1.13</protonpack.version>
<streamex.version>0.6.5</streamex.version>
<vavr.version>0.9.0</vavr.version>
<!-- testing -->
<org.hamcrest.version>1.3</org.hamcrest.version>
<junit.version>4.12</junit.version>
<mockito.version>2.8.9</mockito.version>
<assertj.version>3.6.1</assertj.version>
<avaitility.version>1.7.0</avaitility.version>
<!-- maven plugins -->
<maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
<maven-surefire-plugin.version>2.19.1</maven-surefire-plugin.version>
</properties>
</project>

0
spring-jpa/.gitignore → core-java-sun/src/main/java/com/baeldung/.gitignore vendored
View File

2
core-java-sun/src/main/java/com/baeldung/README.md Normal file
View File

@ -0,0 +1,2 @@
### Relevant Articles:
- [SHA-256 Hashing in Java](http://www.baeldung.com/sha-256-hashing-java)

0
core-java/src/main/java/com/baeldung/javac/Positive.java → core-java-sun/src/main/java/com/baeldung/javac/Positive.java
View File

0
core-java/src/main/java/com/baeldung/javac/SampleJavacPlugin.java → core-java-sun/src/main/java/com/baeldung/javac/SampleJavacPlugin.java
View File

6
core-java-sun/src/main/resources/log4j.properties Normal file
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@ -0,0 +1,6 @@
log4j.rootLogger=DEBUG, A1
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

0
spring-jpa/src/main/resources/logback.xml → core-java-sun/src/main/resources/logback.xml
View File

0
core-java/src/test/java/com/baeldung/javac/SampleJavacPluginIntegrationTest.java → core-java-sun/src/test/java/com/baeldung/javac/SampleJavacPluginIntegrationTest.java
View File

0
core-java/src/test/java/com/baeldung/javac/SimpleClassFile.java → core-java-sun/src/test/java/com/baeldung/javac/SimpleClassFile.java
View File

0
core-java/src/test/java/com/baeldung/javac/SimpleFileManager.java → core-java-sun/src/test/java/com/baeldung/javac/SimpleFileManager.java
View File

0
core-java/src/test/java/com/baeldung/javac/SimpleSourceFile.java → core-java-sun/src/test/java/com/baeldung/javac/SimpleSourceFile.java
View File

0
core-java/src/test/java/com/baeldung/javac/TestCompiler.java → core-java-sun/src/test/java/com/baeldung/javac/TestCompiler.java
View File

0
core-java/src/test/java/com/baeldung/javac/TestRunner.java → core-java-sun/src/test/java/com/baeldung/javac/TestRunner.java
View File

0
spring-jpa/src/test/resources/.gitignore → core-java-sun/src/test/resources/.gitignore vendored
View File

5
core-java/README.md
View File

@ -115,4 +115,9 @@
- [Number of Digits in an Integer in Java](http://www.baeldung.com/java-number-of-digits-in-int)
- [Proxy, Decorator, Adapter and Bridge Patterns](http://www.baeldung.com/java-structural-design-patterns)
- [Creating a Java Compiler Plugin](http://www.baeldung.com/java-build-compiler-plugin)
- [A Guide to the Static Keyword in Java](http://www.baeldung.com/java-static)
- [Initializing Arrays in Java](http://www.baeldung.com/java-initialize-array)
- [Guide to Java String Pool](http://www.baeldung.com/java-string-pool)
- [Copy a File with Java](http://www.baeldung.com/java-copy-file)
- [Introduction to Creational Design Patterns](http://www.baeldung.com/creational-design-patterns)

14
core-java/pom.xml
View File

@ -181,11 +181,6 @@
<version>2.1.0.1</version>
</dependency>
<dependency>
<groupId>com.sun.messaging.mq</groupId>
<artifactId>fscontext</artifactId>
<version>${fscontext.version}</version>
</dependency>
<dependency>
<groupId>com.codepoetics</groupId>
<artifactId>protonpack</artifactId>
@ -216,13 +211,6 @@
<artifactId>spring-web</artifactId>
<version>4.3.4.RELEASE</version>
</dependency>
<dependency>
<groupId>com.sun</groupId>
<artifactId>tools</artifactId>
<version>1.8.0</version>
<scope>system</scope>
<systemPath>${java.home}/../lib/tools.jar</systemPath>
</dependency>
</dependencies>
<build>
@ -460,7 +448,7 @@
<logback.version>1.1.7</logback.version>
<!-- util -->
<guava.version>22.0</guava.version>
<guava.version>23.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>

51
core-java/src/main/java/com/baeldung/comparable/Player.java Normal file
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@ -0,0 +1,51 @@
package com.baeldung.comparable;
public class Player implements Comparable<Player> {
private int ranking;
private String name;
private int age;
public Player(int ranking, String name, int age) {
this.ranking = ranking;
this.name = name;
this.age = age;
}
public int getRanking() {
return ranking;
}
public void setRanking(int ranking) {
this.ranking = ranking;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return this.name;
}
@Override
public int compareTo(Player otherPlayer) {
return (this.getRanking() - otherPlayer.getRanking());
}
}

25
core-java/src/main/java/com/baeldung/comparable/PlayerSorter.java Normal file
View File

@ -0,0 +1,25 @@
package com.baeldung.comparable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class PlayerSorter {
public static void main(String[] args) {
List<Player> footballTeam = new ArrayList<Player>();
Player player1 = new Player(59, "John", 20);
Player player2 = new Player(67, "Roger", 22);
Player player3 = new Player(45, "Steven", 24);
footballTeam.add(player1);
footballTeam.add(player2);
footballTeam.add(player3);
System.out.println("Before Sorting : " + footballTeam);
Collections.sort(footballTeam);
System.out.println("After Sorting : " + footballTeam);
}
}

46
core-java/src/main/java/com/baeldung/comparator/Player.java Normal file
View File

@ -0,0 +1,46 @@
package com.baeldung.comparator;
public class Player {
private int ranking;
private String name;
private int age;
public Player(int ranking, String name, int age) {
this.ranking = ranking;
this.name = name;
this.age = age;
}
public int getRanking() {
return ranking;
}
public void setRanking(int ranking) {
this.ranking = ranking;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return this.name;
}
}

12
core-java/src/main/java/com/baeldung/comparator/PlayerAgeComparator.java Normal file
View File

@ -0,0 +1,12 @@
package com.baeldung.comparator;
import java.util.Comparator;
public class PlayerAgeComparator implements Comparator<Player> {
@Override
public int compare(Player firstPlayer, Player secondPlayer) {
return (firstPlayer.getAge() - secondPlayer.getAge());
}
}

27
core-java/src/main/java/com/baeldung/comparator/PlayerAgeSorter.java Normal file
View File

@ -0,0 +1,27 @@
package com.baeldung.comparator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class PlayerAgeSorter {
public static void main(String[] args) {
List<Player> footballTeam = new ArrayList<Player>();
Player player1 = new Player(59, "John", 22);
Player player2 = new Player(67, "Roger", 20);
Player player3 = new Player(45, "Steven", 24);
footballTeam.add(player1);
footballTeam.add(player2);
footballTeam.add(player3);
System.out.println("Before Sorting : " + footballTeam);
//Instance of PlayerAgeComparator
PlayerAgeComparator playerComparator = new PlayerAgeComparator();
Collections.sort(footballTeam, playerComparator);
System.out.println("After Sorting by age : " + footballTeam);
}
}

12
core-java/src/main/java/com/baeldung/comparator/PlayerRankingComparator.java Normal file
View File

@ -0,0 +1,12 @@
package com.baeldung.comparator;
import java.util.Comparator;
public class PlayerRankingComparator implements Comparator<Player> {
@Override
public int compare(Player firstPlayer, Player secondPlayer) {
return (firstPlayer.getRanking() - secondPlayer.getRanking());
}
}

27
core-java/src/main/java/com/baeldung/comparator/PlayerRankingSorter.java Normal file
View File

@ -0,0 +1,27 @@
package com.baeldung.comparator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class PlayerRankingSorter {
public static void main(String[] args) {
List<Player> footballTeam = new ArrayList<Player>();
Player player1 = new Player(59, "John", 22);
Player player2 = new Player(67, "Roger", 20);
Player player3 = new Player(45, "Steven", 40);
footballTeam.add(player1);
footballTeam.add(player2);
footballTeam.add(player3);
System.out.println("Before Sorting : " + footballTeam);
//Instance of PlayerRankingComparator
PlayerRankingComparator playerComparator = new PlayerRankingComparator();
Collections.sort(footballTeam, playerComparator);
System.out.println("After Sorting by ranking : " + footballTeam);
}
}

6
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/AbstractFactory.java Normal file
View File

@ -0,0 +1,6 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public interface AbstractFactory {
Animal getAnimal(String toyType) ;
Color getColor(String colorType);
}

18
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/AbstractPatternDriver.java Normal file
View File

@ -0,0 +1,18 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public class AbstractPatternDriver {
public static void main(String[] args) {
AbstractFactory abstractFactory;
//creating a brown toy dog
abstractFactory = FactoryProvider.getFactory("Toy");
Animal toy = abstractFactory.getAnimal("Dog");
abstractFactory = FactoryProvider.getFactory("Color");
Color color = abstractFactory.getColor("Brown");
String result = "A " + toy.getType() + " with " + color.getColor() + " color " + toy.makeSound();
System.out.println(result);
}
}

6
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/Animal.java Normal file
View File

@ -0,0 +1,6 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public interface Animal {
String getType();
String makeSound();
}

21
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/AnimalFactory.java Normal file
View File

@ -0,0 +1,21 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public class AnimalFactory implements AbstractFactory {
@Override
public Animal getAnimal(String animalType) {
if ("Dog".equalsIgnoreCase(animalType)) {
return new Dog();
} else if ("Duck".equalsIgnoreCase(animalType)) {
return new Duck();
}
return null;
}
@Override
public Color getColor(String color) {
throw new UnsupportedOperationException();
}
}

10
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/Brown.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public class Brown implements Color {
@Override
public String getColor() {
return "brown";
}
}

5
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/Color.java Normal file
View File

@ -0,0 +1,5 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public interface Color {
String getColor();
}

21
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/ColorFactory.java Normal file
View File

@ -0,0 +1,21 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public class ColorFactory implements AbstractFactory {
@Override
public Color getColor(String colorType) {
if ("Brown".equalsIgnoreCase(colorType)) {
return new Brown();
} else if ("White".equalsIgnoreCase(colorType)) {
return new White();
}
return null;
}
@Override
public Animal getAnimal(String toyType) {
throw new UnsupportedOperationException();
}
}

15
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/Dog.java Normal file
View File

@ -0,0 +1,15 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public class Dog implements Animal {
@Override
public String getType() {
return "Dog";
}
@Override
public String makeSound() {
return "Barks";
}
}

15
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/Duck.java Normal file
View File

@ -0,0 +1,15 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public class Duck implements Animal {
@Override
public String getType() {
return "Duck";
}
@Override
public String makeSound() {
return "Squeks";
}
}

15
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/FactoryProvider.java Normal file
View File

@ -0,0 +1,15 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public class FactoryProvider {
public static AbstractFactory getFactory(String choice){
if("Toy".equalsIgnoreCase(choice)){
return new AnimalFactory();
}
else if("Color".equalsIgnoreCase(choice)){
return new ColorFactory();
}
return null;
}
}

10
core-java/src/main/java/com/baeldung/designpatterns/creational/abstractfactory/White.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.designpatterns.creational.abstractfactory;
public class White implements Color {
@Override
public String getColor() {
return "White";
}
}

64
core-java/src/main/java/com/baeldung/designpatterns/creational/builder/BankAccount.java Normal file
View File

@ -0,0 +1,64 @@
package com.baeldung.designpatterns.creational.builder;
public class BankAccount {
private String name;
private String accountNumber;
private String email;
private boolean newsletter;
//The constructor that takes a builder from which it will create object
//the access to this is only provided to builder
private BankAccount(BankAccountBuilder builder) {
this.name = builder.name;
this.accountNumber = builder.accountNumber;
this.email = builder.email;
this.newsletter = builder.newsletter;
}
public static class BankAccountBuilder {
private String name;
private String accountNumber;
private String email;
private boolean newsletter;
//All Mandatory parameters goes with this constructor
public BankAccountBuilder(String name, String accountNumber) {
this.name = name;
this.accountNumber = accountNumber;
}
//setters for optional parameters which returns this same builder
//to support fluent design
public BankAccountBuilder withEmail(String email) {
this.email = email;
return this;
}
public BankAccountBuilder wantNewsletter(boolean newsletter) {
this.newsletter = newsletter;
return this;
}
//the actual build method that prepares and returns a BankAccount object
public BankAccount build() {
return new BankAccount(this);
}
}
//getters
public String getName() {
return name;
}
public String getAccountNumber() {
return accountNumber;
}
public String getEmail() {
return email;
}
public boolean isNewsletter() {
return newsletter;
}
}

16
core-java/src/main/java/com/baeldung/designpatterns/creational/builder/BuilderPatternDriver.java Normal file
View File

@ -0,0 +1,16 @@
package com.baeldung.designpatterns.creational.builder;
public class BuilderPatternDriver {
public static void main(String[] args) {
BankAccount newAccount = new BankAccount
.BankAccountBuilder("Jon", "22738022275")
.withEmail("jon@example.com")
.wantNewsletter(true)
.build();
System.out.println("Name: " + newAccount.getName());
System.out.println("AccountNumber:" + newAccount.getAccountNumber());
System.out.println("Email: " + newAccount.getEmail());
System.out.println("Want News letter?: " + newAccount.isNewsletter());
}
}

16
core-java/src/main/java/com/baeldung/designpatterns/creational/factory/FactoryDriver.java Normal file
View File

@ -0,0 +1,16 @@
package com.baeldung.designpatterns.creational.factory;
public class FactoryDriver {
public static void main(String[] args) {
Polygon p;
PolygonFactory factory = new PolygonFactory();
//get the shape which has 4 sides
p = factory.getPolygon(4);
System.out.println("The shape with 4 sides is a " + p.getType());
//get the shape which has 4 sides
p = factory.getPolygon(8);
System.out.println("The shape with 8 sides is a " + p.getType());
}
}

10
core-java/src/main/java/com/baeldung/designpatterns/creational/factory/Heptagon.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.designpatterns.creational.factory;
public class Heptagon implements Polygon {
@Override
public String getType() {
return "Heptagon";
}
}

10
core-java/src/main/java/com/baeldung/designpatterns/creational/factory/Octagon.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.designpatterns.creational.factory;
public class Octagon implements Polygon {
@Override
public String getType() {
return "Octagon";
}
}

10
core-java/src/main/java/com/baeldung/designpatterns/creational/factory/Pentagon.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.designpatterns.creational.factory;
public class Pentagon implements Polygon {
@Override
public String getType() {
return "Pentagon";
}
}

5
core-java/src/main/java/com/baeldung/designpatterns/creational/factory/Polygon.java Normal file
View File

@ -0,0 +1,5 @@
package com.baeldung.designpatterns.creational.factory;
public interface Polygon {
String getType();
}

22
core-java/src/main/java/com/baeldung/designpatterns/creational/factory/PolygonFactory.java Normal file
View File

@ -0,0 +1,22 @@
package com.baeldung.designpatterns.creational.factory;
public class PolygonFactory {
public Polygon getPolygon(int numberOfSides) {
if(numberOfSides == 3) {
return new Triangle();
}
if(numberOfSides == 4) {
return new Square();
}
if(numberOfSides == 5) {
return new Pentagon();
}
if(numberOfSides == 7) {
return new Heptagon();
}
else if(numberOfSides == 8) {
return new Octagon();
}
return null;
}
}

10
core-java/src/main/java/com/baeldung/designpatterns/creational/factory/Square.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.designpatterns.creational.factory;
public class Square implements Polygon {
@Override
public String getType() {
return "Square";
}
}

10
core-java/src/main/java/com/baeldung/designpatterns/creational/factory/Triangle.java Normal file
View File

@ -0,0 +1,10 @@
package com.baeldung.designpatterns.creational.factory;
public class Triangle implements Polygon {
@Override
public String getType() {
return "Triangle";
}
}

13
core-java/src/main/java/com/baeldung/designpatterns/creational/singleton/Singleton.java Normal file
View File

@ -0,0 +1,13 @@
package com.baeldung.designpatterns.creational.singleton;
public class Singleton {
private Singleton() {}
private static class SingletonHolder {
public static final Singleton instance = new Singleton();
}
public static Singleton getInstance() {
return SingletonHolder.instance;
}
}

8
core-java/src/main/java/com/baeldung/designpatterns/creational/singleton/SingletonDriver.java Normal file
View File

@ -0,0 +1,8 @@
package com.baeldung.designpatterns.creational.singleton;
public class SingletonDriver {
public static void main(String[] args) {
Singleton instance = Singleton.getInstance();
System.out.println(instance.toString());
}
}

43
core-java/src/main/java/com/baeldung/loops/LoopsInJava.java Normal file
View File

@ -0,0 +1,43 @@
package com.baeldung.loops;
public class LoopsInJava {
public int[] simple_for_loop() {
int[] arr = new int[5];
for (int i = 0; i < 5; i++) {
arr[i] = i;
System.out.println("Simple for loop: i - " + i);
}
return arr;
}
public int[] enhanced_for_each_loop() {
int[] intArr = { 0, 1, 2, 3, 4 };
int[] arr = new int[5];
for (int num : intArr) {
arr[num] = num;
System.out.println("Enhanced for-each loop: i - " + num);
}
return arr;
}
public int[] while_loop() {
int i = 0;
int[] arr = new int[5];
while (i < 5) {
arr[i] = i;
System.out.println("While loop: i - " + i++);
}
return arr;
}
public int[] do_while_loop() {
int i = 0;
int[] arr = new int[5];
do {
arr[i] = i;
System.out.println("Do-While loop: i - " + i++);
} while (i < 5);
return arr;
}
}

11
core-java/src/main/java/com/baeldung/nestedclass/Enclosing.java Normal file
View File

@ -0,0 +1,11 @@
package com.baeldung.nestedclass;
public class Enclosing {
public static class Nested {
public void test() {
System.out.println("Calling test...");
}
}
}

15
core-java/src/main/java/com/baeldung/nestedclass/NewEnclosing.java Normal file
View File

@ -0,0 +1,15 @@
package com.baeldung.nestedclass;
public class NewEnclosing {
void run() {
class Local {
void run() {
System.out.println("Welcome to Baeldung!");
}
}
Local local = new Local();
local.run();
}
}

11
core-java/src/main/java/com/baeldung/nestedclass/Outer.java Normal file
View File

@ -0,0 +1,11 @@
package com.baeldung.nestedclass;
public class Outer {
public class Inner {
public void test() {
System.out.println("Calling test...");
}
}
}

5
core-java/src/main/java/com/baeldung/nestedclass/SimpleAbstractClass.java Normal file
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@ -0,0 +1,5 @@
package com.baeldung.nestedclass;
abstract class SimpleAbstractClass {
abstract void run();
}

43
core-java/src/main/java/com/baeldung/timezonedisplay/TimezoneDisplayJava7.java Normal file
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package com.baeldung.timezonedisplay;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.TimeZone;
import java.util.concurrent.TimeUnit;
public class TimezoneDisplayJava7 {
public enum OffsetBase {
GMT, UTC
}
public List<String> getTimeZoneList(TimezoneDisplayJava7.OffsetBase base) {
String[] availableZoneIds = TimeZone.getAvailableIDs();
List<String> result = new ArrayList<>(availableZoneIds.length);
for (String zoneId : availableZoneIds) {
TimeZone curTimeZone = TimeZone.getTimeZone(zoneId);
String offset = calculateOffset(curTimeZone.getRawOffset());
result.add(String.format("(%s%s) %s", base, offset, zoneId));
}
Collections.sort(result);
return result;
}
private String calculateOffset(int rawOffset) {
if (rawOffset == 0) {
return "+00:00";
}
long hours = TimeUnit.MILLISECONDS.toHours(rawOffset);
long minutes = TimeUnit.MILLISECONDS.toMinutes(rawOffset);
minutes = Math.abs(minutes - TimeUnit.HOURS.toMinutes(hours));
return String.format("%+03d:%02d", hours, Math.abs(minutes));
}
}

23
core-java/src/main/java/com/baeldung/timezonedisplay/TimezoneDisplayJava7App.java Normal file
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package com.baeldung.timezonedisplay;
import java.util.List;
public class TimezoneDisplayJava7App {
public static void main(String... args) {
TimezoneDisplayJava7 display = new TimezoneDisplayJava7();
System.out.println("Time zones in UTC:");
List<String> utc = display.getTimeZoneList(TimezoneDisplayJava7.OffsetBase.UTC);
for (String timeZone : utc) {
System.out.println(timeZone);
}
System.out.println("Time zones in GMT:");
List<String> gmt = display.getTimeZoneList(TimezoneDisplayJava7.OffsetBase.GMT);
for (String timeZone : gmt) {
System.out.println(timeZone);
}
}
}

16
core-java/src/main/java/com/baeldung/util/StreamUtils.java Normal file
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package com.baeldung.util;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import org.apache.commons.io.IOUtils;
public class StreamUtils {
public static String getStringFromInputStream(InputStream input) throws IOException {
StringWriter writer = new StringWriter();
IOUtils.copy(input, writer, "UTF-8");
return writer.toString();
}
}

3
core-java/src/main/resources/countries.properties Normal file
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UK
US
Germany

50
core-java/src/test/java/com/baeldung/arraydeque/ArrayDequeTest.java Normal file
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package com.baeldung.arraydeque;
import java.util.ArrayDeque;
import java.util.Deque;
import static org.junit.Assert.*;
import org.junit.Test;
public class ArrayDequeTest {
@Test
public void whenOffer_addsAtLast() {
final Deque<String> deque = new ArrayDeque<>();
deque.offer("first");
deque.offer("second");
assertEquals("second", deque.getLast());
}
@Test
public void whenPoll_removesFirst() {
final Deque<String> deque = new ArrayDeque<>();
deque.offer("first");
deque.offer("second");
assertEquals("first", deque.poll());
}
@Test
public void whenPush_addsAtFirst() {
final Deque<String> deque = new ArrayDeque<>();
deque.push("first");
deque.push("second");
assertEquals("second", deque.getFirst());
}
@Test
public void whenPop_removesLast() {
final Deque<String> deque = new ArrayDeque<>();
deque.push("first");
deque.push("second");
assertEquals("second", deque.pop());
}
}

29
core-java/src/test/java/com/baeldung/comparable/ComparableUnitTest.java Normal file
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package com.baeldung.comparable;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.junit.Test;
public class ComparableUnitTest {
@Test
public void whenUsingComparable_thenSortedList() {
List<Player> footballTeam = new ArrayList<Player>();
Player player1 = new Player(59, "John", 20);
Player player2 = new Player(67, "Roger", 22);
Player player3 = new Player(45, "Steven", 24);
footballTeam.add(player1);
footballTeam.add(player2);
footballTeam.add(player3);
Collections.sort(footballTeam);
assertEquals(footballTeam.get(0)
.getName(), "Steven");
assertEquals(footballTeam.get(2)
.getRanking(), 67);
}
}

47
core-java/src/test/java/com/baeldung/comparator/ComparatorUnitTest.java Normal file
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package com.baeldung.comparator;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
public class ComparatorUnitTest {
List<Player> footballTeam;
@Before
public void setUp() {
footballTeam = new ArrayList<Player>();
Player player1 = new Player(59, "John", 20);
Player player2 = new Player(67, "Roger", 22);
Player player3 = new Player(45, "Steven", 24);
footballTeam.add(player1);
footballTeam.add(player2);
footballTeam.add(player3);
}
@Test
public void whenUsingRankingComparator_thenSortedList() {
PlayerRankingComparator playerComparator = new PlayerRankingComparator();
Collections.sort(footballTeam, playerComparator);
assertEquals(footballTeam.get(0)
.getName(), "Steven");
assertEquals(footballTeam.get(2)
.getRanking(), 67);
}
@Test
public void whenUsingAgeComparator_thenSortedList() {
PlayerAgeComparator playerComparator = new PlayerAgeComparator();
Collections.sort(footballTeam, playerComparator);
assertEquals(footballTeam.get(0)
.getName(), "John");
assertEquals(footballTeam.get(2)
.getRanking(), 45);
}
}

68
core-java/src/test/java/com/baeldung/comparator/Java8ComparatorUnitTest.java Normal file
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package com.baeldung.comparator;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
public class Java8ComparatorUnitTest {
List<Player> footballTeam;
@Before
public void setUp() {
footballTeam = new ArrayList<Player>();
Player player1 = new Player(59, "John", 22);
Player player2 = new Player(67, "Roger", 20);
Player player3 = new Player(45, "Steven", 24);
footballTeam.add(player1);
footballTeam.add(player2);
footballTeam.add(player3);
}
@Test
public void whenComparing_UsingLambda_thenSorted() {
System.out.println("************** Java 8 Comaparator **************");
Comparator<Player> byRanking = (Player player1, Player player2) -> player1.getRanking() - player2.getRanking();
System.out.println("Before Sorting : " + footballTeam);
Collections.sort(footballTeam, byRanking);
System.out.println("After Sorting : " + footballTeam);
assertEquals(footballTeam.get(0)
.getName(), "Steven");
assertEquals(footballTeam.get(2)
.getRanking(), 67);
}
@Test
public void whenComparing_UsingComparatorComparing_thenSorted() {
System.out.println("********* Comaparator.comparing method *********");
System.out.println("********* byRanking *********");
Comparator<Player> byRanking = Comparator.comparing(Player::getRanking);
System.out.println("Before Sorting : " + footballTeam);
Collections.sort(footballTeam, byRanking);
System.out.println("After Sorting : " + footballTeam);
assertEquals(footballTeam.get(0)
.getName(), "Steven");
assertEquals(footballTeam.get(2)
.getRanking(), 67);
System.out.println("********* byAge *********");
Comparator<Player> byAge = Comparator.comparing(Player::getAge);
System.out.println("Before Sorting : " + footballTeam);
Collections.sort(footballTeam, byAge);
System.out.println("After Sorting : " + footballTeam);
assertEquals(footballTeam.get(0)
.getName(), "Roger");
assertEquals(footballTeam.get(2)
.getRanking(), 45);
}
}

70
core-java/src/test/java/com/baeldung/copyfiles/FileCopierTest.java Normal file
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package com.baeldung.copyfiles;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import org.apache.commons.io.FileUtils;
import org.junit.Before;
import org.junit.Test;
import static org.assertj.core.api.Assertions.*;
public class FileCopierTest {
File original = new File("src/test/resources/original.txt");
@Before
public void init() throws IOException {
if (!original.exists())
Files.createFile(original.toPath());
}
@Test
public void givenIoAPI_whenCopied_thenCopyExistsWithSameContents() throws IOException {
File copied = new File("src/test/resources/copiedWithIo.txt");
try (InputStream in = new BufferedInputStream(new FileInputStream(original));
OutputStream out = new BufferedOutputStream(new FileOutputStream(copied))) {
byte[] buffer = new byte[1024];
int lengthRead;
while ((lengthRead = in.read(buffer)) > 0) {
out.write(buffer, 0, lengthRead);
out.flush();
}
}
assertThat(copied).exists();
assertThat(Files.readAllLines(original.toPath()).equals(Files.readAllLines(copied.toPath())));
}
@Test
public void givenCommonsIoAPI_whenCopied_thenCopyExistsWithSameContents() throws IOException {
File copied = new File("src/test/resources/copiedWithApacheCommons.txt");
FileUtils.copyFile(original, copied);
assertThat(copied).exists();
assertThat(Files.readAllLines(original.toPath()).equals(Files.readAllLines(copied.toPath())));
}
@Test
public void givenNIO2_whenCopied_thenCopyExistsWithSameContents() throws IOException {
Path copied = Paths.get("src/test/resources/copiedWithNio.txt");
Path originalPath = original.toPath();
Files.copy(originalPath, copied, StandardCopyOption.REPLACE_EXISTING);
assertThat(copied).exists();
assertThat(Files.readAllLines(originalPath).equals(Files.readAllLines(copied)));
}
@Test
public void givenGuava_whenCopied_thenCopyExistsWithSameContents() throws IOException {
File copied = new File("src/test/resources/copiedWithApacheCommons.txt");
com.google.common.io.Files.copy(original, copied);
assertThat(copied).exists();
assertThat(Files.readAllLines(original.toPath()).equals(Files.readAllLines(copied.toPath())));
}
}

23
core-java/src/test/java/com/baeldung/designpatterns/creational/abstractfactory/AbstractPatternIntegrationTest.java Normal file
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package com.baeldung.designpatterns.creational.abstractfactory;
import static org.junit.Assert.*;
import org.junit.Test;
public class AbstractPatternIntegrationTest {
@Test
public void givenAbstractFactory_whenGettingObjects_thenSuccessful() {
AbstractFactory abstractFactory;
//creating a brown toy dog
abstractFactory = FactoryProvider.getFactory("Toy");
Animal toy = abstractFactory.getAnimal("Dog");
abstractFactory = FactoryProvider.getFactory("Color");
Color color = abstractFactory.getColor("Brown");
String result = "A " + toy.getType() + " with " + color.getColor() + " color " + toy.makeSound();
assertEquals("A Dog with brown color Barks", result);
}
}

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