Merge remote-tracking branch 'Baeldung/master' into active_mq

# Conflicts: # .gitignore # LICENSE # README.md # core-java-modules/README.md # core-java-modules/core-java-11/README.md # core-java-modules/core-java-11/pom.xml # core-java-modules/core-java-8/README.md # core-java-modules/core-java-8/pom.xml # core-java-modules/core-java-8/src/main/resources/logback.xml # core-java-modules/core-java-annotations/README.md # core-java-modules/core-java-annotations/pom.xml # core-java-modules/core-java-collections-2/README.md # core-java-modules/core-java-collections-2/pom.xml # core-java-modules/core-java-collections-3/README.md # core-java-modules/core-java-collections-3/pom.xml # core-java-modules/core-java-collections-conversions-2/README.md # core-java-modules/core-java-collections-conversions-2/pom.xml # core-java-modules/core-java-collections-conversions/README.md # core-java-modules/core-java-collections-conversions/pom.xml # core-java-modules/core-java-collections-list/README.md # core-java-modules/core-java-collections-list/pom.xml # core-java-modules/core-java-collections/pom.xml # core-java-modules/core-java-datetime-conversion/README.md # core-java-modules/core-java-datetime-conversion/pom.xml # core-java-modules/core-java-datetime-conversion/src/test/java/com/baeldung/datetime/ConvertInstantToTimestampUnitTest.java # core-java-modules/core-java-io-2/pom.xml # core-java-modules/core-java-io/README.md # core-java-modules/core-java-io/pom.xml # core-java-modules/core-java-io/src/test/resources/fileTest.txt # core-java-modules/core-java-io/src/test/resources/sampleTextFile.txt # core-java-modules/core-java-lambdas/README.md # core-java-modules/core-java-lambdas/pom.xml # core-java-modules/core-java-serialization/pom.xml # core-java-modules/core-java-streams/README.md # core-java-modules/core-java-streams/pom.xml # core-java-modules/core-java-strings/README.md # core-java-modules/core-java-strings/pom.xml # core-java-modules/core-java-strings/src/test/resources/stringtoolong.txt # core-java-modules/core-java-uuid/README.md # core-java-modules/core-java-uuid/pom.xml # core-java-modules/pom.xml # image-processing/README.md # image-processing/pom.xml # image-processing/src/main/java/com/baeldung/imageprocessing/addingtext/AddText.java # image-processing/src/main/java/com/baeldung/imageprocessing/opencv/CameraStream.java # jackson-modules/jackson-annotations/README.md # jackson-modules/jackson-annotations/pom.xml # jackson-modules/jackson-conversions-2/README.md # jackson-modules/jackson-conversions-2/pom.xml # jackson-modules/jackson-conversions/README.md # jackson-modules/jackson-conversions/pom.xml # jackson-modules/jackson-custom-conversions/README.md # jackson-modules/jackson-custom-conversions/pom.xml # jackson-modules/jackson-custom-conversions/src/test/java/com/baeldung/defaultserializercustomserializer/CallingDefaultSerializerUnitTest.java # jackson-modules/jackson-custom-conversions/src/test/java/com/baeldung/deserialization/CustomDeserializationUnitTest.java # jackson-modules/jackson-exceptions/README.md # jackson-modules/jackson-exceptions/pom.xml # jackson-modules/jackson-exceptions/src/test/java/com/baeldung/exceptions/JacksonExceptionsUnitTest.java # jackson-modules/jackson-exceptions/src/test/java/com/baeldung/mappingexception/JacksonMappingExceptionUnitTest.java # jackson-modules/pom.xml # parent-boot-1/pom.xml # parent-boot-2/pom.xml # parent-boot-3/pom.xml # patterns-modules/design-patterns-architectural/pom.xml # patterns-modules/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserDaoImpl.java # patterns-modules/design-patterns-behavioral-2/README.md # patterns-modules/design-patterns-behavioral-2/pom.xml # patterns-modules/design-patterns-creational-2/README.md # patterns-modules/design-patterns-creational-2/pom.xml # patterns-modules/design-patterns-singleton/README.md # patterns-modules/design-patterns-structural/src/main/resources/log4jstructuraldp.properties # patterns-modules/enterprise-patterns/pom.xml # patterns-modules/intercepting-filter/pom.xml # patterns-modules/pom.xml # persistence-modules/activejdbc/pom.xml # persistence-modules/hibernate5/README.md # persistence-modules/hibernate5/pom.xml # persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/interceptors/CustomInterceptor.java # persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/interceptors/entity/User.java # persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/namingstrategy/CustomPhysicalNamingStrategy.java # persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/persistjson/Customer.java # persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/persistjson/HashMapConverter.java # persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/OrderEntryIdClass.java # persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/OrderEntryPK.java # persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/IdentifiersIntegrationTest.java # persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/bootstrap/BootstrapAPIIntegrationTest.java # persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/proxy/HibernateProxyUnitTest.java # persistence-modules/hibernate5/src/test/resources/hibernate-interceptors.properties # persistence-modules/hibernate5/src/test/resources/hibernate-lifecycle.properties # persistence-modules/hibernate5/src/test/resources/hibernate-namingstrategy.properties # persistence-modules/hibernate5/src/test/resources/hibernate-persistjson.properties # persistence-modules/hibernate5/src/test/resources/hibernate.properties # persistence-modules/pom.xml # persistence-modules/spring-data-jpa-crud/pom.xml # persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/repository/FruitRepository.java # persistence-modules/spring-data-jpa-repo-2/README.md # persistence-modules/spring-data-jpa-repo-2/pom.xml # persistence-modules/spring-data-jpa-repo-2/src/main/java/com/baeldung/spring/data/persistence/customrepository/model/User.java # persistence-modules/spring-data-jpa-repo-2/src/main/java/com/baeldung/spring/data/persistence/customrepository/repository/CustomUserRepositoryImpl.java # persistence-modules/spring-data-jpa-repo-2/src/main/java/com/baeldung/spring/data/persistence/saveperformance/Book.java # persistence-modules/spring-data-jpa-repo-2/src/main/resources/application.properties # persistence-modules/spring-data-mongodb-reactive/pom.xml # persistence-modules/spring-data-redis/README.md # persistence-modules/spring-data-redis/pom.xml # persistence-modules/spring-data-redis/src/main/java/com/baeldung/spring/data/reactive/redis/config/RedisConfig.java # persistence-modules/spring-data-redis/src/main/java/com/baeldung/spring/data/redis/config/RedisConfig.java # persistence-modules/spring-data-redis/src/main/java/com/baeldung/spring/data/redis/model/Student.java # persistence-modules/spring-data-redis/src/main/java/com/baeldung/spring/data/redis/queue/RedisMessageSubscriber.java # persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/reactive/redis/template/RedisKeyCommandsManualTest.java # persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/reactive/redis/template/RedisTemplateListOpsManualTest.java # persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/reactive/redis/template/RedisTemplateValueOpsManualTest.java # persistence-modules/spring-data-redis/src/test/java/com/baeldung/spring/data/redis/repo/StudentRepositoryManualTest.java # pom.xml # testing-modules/assertion-libraries/README.md # testing-modules/assertion-libraries/pom.xml # testing-modules/junit-5-basics/README.md # testing-modules/junit-5-basics/pom.xml # testing-modules/mockito-2/src/main/java/com/baeldung/nullmatcher/Helper.java # testing-modules/mockito-2/src/main/java/com/baeldung/nullmatcher/Main.java # testing-modules/mockito-2/src/main/java/com/baeldung/wantedbutnotinvocked/Helper.java # testing-modules/mockito-2/src/main/java/com/baeldung/wantedbutnotinvocked/Main.java # testing-modules/mockito-2/src/test/java/com/baeldung/nullmatcher/MainUnitTest.java # testing-modules/mockito-2/src/test/java/com/baeldung/wantedbutnotinvocked/MainUnitTest.java # testing-modules/pom.xml # testing-modules/spring-mockito/pom.xml # web-modules/dropwizard/pom.xml # web-modules/jakarta-ee/README.md # web-modules/jakarta-ee/pom.xml # web-modules/jakarta-ee/src/test/java/com/baeldung/eclipse/krazo/UserControllerUnitTest.java # web-modules/java-lite/pom.xml # web-modules/javax-servlets-2/README.md # web-modules/javax-servlets-2/pom.xml # web-modules/javax-servlets/pom.xml # web-modules/jee-7/pom.xml # web-modules/jooby/pom.xml # web-modules/ninja/pom.xml # web-modules/pom.xml # web-modules/ratpack/pom.xml # web-modules/resteasy/pom.xml # web-modules/restx/pom.xml # web-modules/spark-java/pom.xml # web-modules/vraptor/pom.xml # xml/README.md # xml/pom.xml # xml/src/main/resources/customer-binding.xml # xml/src/main/resources/sax/baeldung.xml # xml/src/test/resources/example_default_parser.xml # xml/src/test/resources/example_dom4j.xml # xml/src/test/resources/example_jaxb.xml # xml/src/test/resources/example_jaxen.xml # xml/src/test/resources/example_jdom.xml # xml/src/test/resources/example_stax.xml # xml/src/test/resources/sax/baeldung.xml # xml/src/test/resources/xml/websites.xml # xml/src/test/resources/xml/xee_attribute.xml
2024-04-30 12:23:19 -04:00
parent c18eb6d2ed 8cabe509a5
commit a51b7b55d9
27985 changed files with 1584039 additions and 0 deletions
@@ -0,0 +1,24 @@
+package com.baeldung.image;
+
+import javax.imageio.ImageIO;
+import java.awt.geom.AffineTransform;
+import java.awt.image.AffineTransformOp;
+import java.awt.image.BufferedImage;
+import java.io.File;
+
+public class Application {
+
+    public static void main(String[] args) throws Exception {
+        BufferedImage srcImg = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        float scaleW = 2.0f, scaleH = 2.0f;
+        int w = srcImg.getWidth() * (int) scaleW;
+        int h = srcImg.getHeight() * (int) scaleH;
+        BufferedImage dstImg = new BufferedImage(w, h, srcImg.getType());
+        AffineTransform scalingTransform = new AffineTransform();
+        scalingTransform.scale(scaleW, scaleH);
+        AffineTransformOp scaleOp = new AffineTransformOp(scalingTransform, AffineTransformOp.TYPE_BILINEAR);
+        dstImg = scaleOp.filter(srcImg, dstImg);
+        ImageIO.write(dstImg, "jpg", new File("src/main/resources/images/resized.jpg"));
+    }
+
+}
@@ -0,0 +1,28 @@
+package com.baeldung.imageprocessing.imagetobufferedimage;
+
+import java.awt.*;
+import java.awt.image.BufferedImage;
+
+public class ImageToBufferedImage {
+
+    // Method 1: Using BufferedImage Constructor
+    public BufferedImage convertUsingConstructor(Image image) throws IllegalArgumentException {
+        int width = image.getWidth(null);
+        int height = image.getHeight(null);
+        if (width <= 0 || height <= 0) {
+            throw new IllegalArgumentException("Image dimensions are invalid");
+        }
+        BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        bufferedImage.getGraphics().drawImage(image, 0, 0, null);
+        return bufferedImage;
+    }
+
+    // Method 2: Casting Image to BufferedImage
+    public BufferedImage convertUsingCasting(Image image) throws ClassCastException {
+        if (image instanceof BufferedImage) {
+            return (BufferedImage) image;
+        } else {
+            throw new ClassCastException("Image type is not compatible with BufferedImage.");
+        }
+    }
+}
@@ -0,0 +1,71 @@
+package com.baeldung.image.resize.core;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import org.junit.Test;
+
+public class Graphics2DExampleIntegrationTest {
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = Graphics2DExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNotNull(outputImage);
+    }
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        assertNotEquals(originalImage.getWidth(), targetWidth);
+        assertNotEquals(originalImage.getHeight(), targetHeight);
+        BufferedImage outputImage = Graphics2DExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertEquals(outputImage.getWidth(), targetWidth);
+        assertEquals(outputImage.getHeight(), targetHeight);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
+        int targetWidth = 0;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = Graphics2DExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 0;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = Graphics2DExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageDoesNotExist_thenErrorIsNotThrownAndImageIsGenerated() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage outputImage = Graphics2DExample.resizeImage(null, targetWidth, targetHeight);
+
+        assertNotNull(outputImage);
+        assertEquals(outputImage.getWidth(), targetWidth);
+        assertEquals(outputImage.getHeight(), targetHeight);
+    }
+}
@@ -0,0 +1,69 @@
+package com.baeldung.image.resize.core;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import org.junit.Test;
+
+public class ImageScaledInstanceExampleIntegrationTest {
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ImageScaledInstanceExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNotNull(outputImage);
+    }
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        assertNotEquals(originalImage.getWidth(), targetWidth);
+        assertNotEquals(originalImage.getHeight(), targetHeight);
+        BufferedImage outputImage = ImageScaledInstanceExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertEquals(outputImage.getWidth(), targetWidth);
+        assertEquals(outputImage.getHeight(), targetHeight);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
+        int targetWidth = 0;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ImageScaledInstanceExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 0;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ImageScaledInstanceExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenOriginalImageDoesNotExist_thenErrorIsThrown() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage outputImage = ImageScaledInstanceExample.resizeImage(null, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+}
@@ -0,0 +1,54 @@
+package com.baeldung.image.resize.imagetobufferedimage;
+
+import com.baeldung.imageprocessing.imagetobufferedimage.ImageToBufferedImage;
+import org.junit.Test;
+
+import javax.imageio.ImageIO;
+import javax.swing.*;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class ImageToBufferedImageIntegrationTest {
+    Image image = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+
+    public ImageToBufferedImageIntegrationTest() throws IOException {
+    }
+
+    @Test
+    public void whenConvertUsingConstructorWithValidDimensions_thenImageGeneratedWithoutError() {
+        ImageToBufferedImage converter = new ImageToBufferedImage();
+        BufferedImage bufferedImage = converter.convertUsingConstructor(image);
+        assertNotNull(bufferedImage);
+        assertEquals(image.getWidth(null), bufferedImage.getWidth());
+        assertEquals(image.getHeight(null), bufferedImage.getHeight());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void whenConvertUsingConstructorWithInvalidDimensions_thenImageGeneratedWithError() {
+        ImageToBufferedImage converter = new ImageToBufferedImage();
+        converter.convertUsingConstructor(new BufferedImage(-100, -100, BufferedImage.TYPE_INT_ARGB));
+    }
+
+    @Test
+    public void whenConvertUsingCastingWithCompatibleImageType_thenImageGeneratedWithoutError() {
+        ImageToBufferedImage converter = new ImageToBufferedImage();
+        BufferedImage bufferedImage = converter.convertUsingCasting(image);
+        assertNotNull(bufferedImage);
+        assertEquals(image.getWidth(null), bufferedImage.getWidth());
+        assertEquals(image.getHeight(null), bufferedImage.getHeight());
+    }
+
+    @Test(expected = ClassCastException.class)
+    public void whenConvertUsingCastingWithIncompatibleImageType_thenImageGeneratedWithError() {
+        ImageToBufferedImage converter = new ImageToBufferedImage();
+        // PNG format is not directly supported by BufferedImage
+        Image image = new ImageIcon("src/main/resources/images/baeldung.png").getImage();
+        converter.convertUsingCasting(image);
+    }
+}
+
@@ -0,0 +1,69 @@
+package com.baeldung.image.resize.imgscalr;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import org.junit.Test;
+
+public class ImgscalrExampleIntegrationTest {
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ImgscalrExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNotNull(outputImage);
+    }
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        assertNotEquals(originalImage.getWidth(), targetWidth);
+        assertNotEquals(originalImage.getHeight(), targetHeight);
+        BufferedImage outputImage = ImgscalrExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertEquals(outputImage.getWidth(), targetWidth);
+        assertEquals(outputImage.getHeight(), targetHeight);
+    }
+
+    @Test(expected = Test.None.class)
+    public void whenTargetWidthIsZero_thenImageIsCreated() throws IOException {
+        int targetWidth = 0;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ImgscalrExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNotNull(outputImage);
+    }
+
+    @Test(expected = Test.None.class)
+    public void whenTargetHeightIsZero_thenImageIsCreated() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 0;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ImgscalrExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNotNull(outputImage);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenOriginalImageDoesNotExist_thenErrorIsThrown() {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage outputImage = ImgscalrExample.resizeImage(null, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+}
@@ -0,0 +1,68 @@
+package com.baeldung.image.resize.marvin;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import org.junit.Test;
+
+public class MarvinExampleIntegrationTest {
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = MarvinExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNotNull(outputImage);
+    }
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        assertNotEquals(originalImage.getWidth(), targetWidth);
+        assertNotEquals(originalImage.getHeight(), targetHeight);
+        BufferedImage outputImage = MarvinExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertEquals(outputImage.getWidth(), targetWidth);
+        assertEquals(outputImage.getHeight(), targetHeight);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
+        int targetWidth = 0;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = MarvinExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 0;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = MarvinExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenOriginalImageDoesNotExist_thenErrorIsThrown() {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage outputImage = MarvinExample.resizeImage(null, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+}
@@ -0,0 +1,68 @@
+package com.baeldung.image.resize.thumbnailator;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import org.junit.Test;
+
+public class ThumbnailatorExampleIntegrationTest {
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenImageGeneratedWithoutError() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ThumbnailatorExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNotNull(outputImage);
+    }
+
+    @Test(expected = Test.None.class)
+    public void whenOriginalImageExistsAndTargetSizesAreNotZero_thenOutputImageSizeIsValid() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        assertNotEquals(originalImage.getWidth(), targetWidth);
+        assertNotEquals(originalImage.getHeight(), targetHeight);
+        BufferedImage outputImage = ThumbnailatorExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertEquals(outputImage.getWidth(), targetWidth);
+        assertEquals(outputImage.getHeight(), targetHeight);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenTargetWidthIsZero_thenErrorIsThrown() throws IOException {
+        int targetWidth = 0;
+        int targetHeight = 200;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ThumbnailatorExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenTargetHeightIsZero_thenErrorIsThrown() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 0;
+        BufferedImage originalImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
+        BufferedImage outputImage = ThumbnailatorExample.resizeImage(originalImage, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+
+    @Test(expected = Exception.class)
+    public void whenOriginalImageDoesNotExist_thenErrorIsThrown() throws IOException {
+        int targetWidth = 200;
+        int targetHeight = 200;
+        BufferedImage outputImage = ThumbnailatorExample.resizeImage(null, targetWidth, targetHeight);
+
+        assertNull(outputImage);
+    }
+}