Merge branch 'eugenp:master' into master

aws-lambda/README.md

@@ -6,3 +6,4 @@ This module contains articles about AWS Lambda
 - [Using AWS Lambda with API Gateway](https://www.baeldung.com/aws-lambda-api-gateway)
 - [Introduction to AWS Serverless Application Model](https://www.baeldung.com/aws-serverless)
 - [How to Implement Hibernate in an AWS Lambda Function in Java](https://www.baeldung.com/java-aws-lambda-hibernate)
+- [Writing an Enterprise-Grade AWS Lambda in Java](https://www.baeldung.com/java-enterprise-aws-lambda)

core-java-modules/core-java-arrays-guides/README.md

@@ -8,3 +8,4 @@ This module contains complete guides about arrays in Java
 - [What is \[Ljava.lang.Object;?](https://www.baeldung.com/java-tostring-array)
 - [Guide to ArrayStoreException](https://www.baeldung.com/java-arraystoreexception)
 - [Creating a Generic Array in Java](https://www.baeldung.com/java-generic-array)
+- [Maximum Size of Java Arrays](https://www.baeldung.com/java-arrays-max-size)

core-java-modules/core-java-exceptions-3/README.md

@@ -8,3 +8,4 @@
 - [Localizing Exception Messages in Java](https://www.baeldung.com/java-localize-exception-messages)
 - [Explanation of ClassCastException in Java](https://www.baeldung.com/java-classcastexception)
 - [NoSuchFieldError in Java](https://www.baeldung.com/java-nosuchfielderror)
+- [IllegalAccessError in Java](https://www.baeldung.com/java-illegalaccesserror)

core-java-modules/core-java-networking-3/README.md

@@ -5,4 +5,5 @@ This module contains articles about networking in Java
 ### Relevant Articles
 
 - [Finding a Free Port in Java](https://www.baeldung.com/java-free-port)
+- [Downloading Email Attachments in Java](https://www.baeldung.com/java-download-email-attachments)
 - [[<-- Prev]](/core-java-modules/core-java-networking-2)

core-java-modules/core-java-reflection-2/README.md

@@ -5,3 +5,4 @@
 - [Checking If a Method is Static Using Reflection in Java](https://www.baeldung.com/java-check-method-is-static)
 - [Checking if a Java Class is ‘abstract’ Using Reflection](https://www.baeldung.com/java-reflection-is-class-abstract)
 - [Invoking a Private Method in Java](https://www.baeldung.com/java-call-private-method)
+- [Finding All Classes in a Java Package](https://www.baeldung.com/java-find-all-classes-in-package)

core-java-modules/core-java-regex/README.md

@@ -13,3 +13,4 @@
 - [Regular Expressions \s and \s+ in Java](https://www.baeldung.com/java-regex-s-splus)
 - [Validate Phone Numbers With Java Regex](https://www.baeldung.com/java-regex-validate-phone-numbers)
 - [How to Count the Number of Matches for a Regex?](https://www.baeldung.com/java-count-regex-matches)
+- [Find All Numbers in a String in Java](https://www.baeldung.com/java-find-numbers-in-string)

core-java-modules/core-java-security-3/README.md

@@ -4,5 +4,5 @@ This module contains articles about core Java Security
 
 ### Relevant Articles:
 
-- [Secret Key and String Conversion in Java](https://www.baeldung.com/secret-key-and-string-conversion-in-java/)
+- [Secret Key and String Conversion in Java](https://www.baeldung.com/java-secret-key-to-string)
 - More articles: [[<-- prev]](/core-java-modules/core-java-security-2)

gradle/gradle-cucumber/README.md

@@ -0,0 +1,3 @@
+### Relevant Articles:
+
+- [Using Cucumber with Gradle](https://www.baeldung.com/java-cucumber-gradle)

gradle/gradle-jacoco/build.gradle

@@ -0,0 +1,54 @@
+
+plugins {
+    id 'java'
+    id 'jacoco'
+}
+
+ext {
+    junitVersion = '5.7.2'
+    lombokVersion = '1.18.20'
+}
+
+group 'com.com.baeldung'
+version '1.0-SNAPSHOT'
+
+repositories {
+    mavenCentral()
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
+}
+
+dependencies {
+    testImplementation "org.junit.jupiter:junit-jupiter-api:${junitVersion}"
+    testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:${junitVersion}"
+
+    compileOnly "org.projectlombok:lombok:${lombokVersion}"
+    annotationProcessor "org.projectlombok:lombok:${lombokVersion}"
+}
+
+test {
+    useJUnitPlatform()
+
+    finalizedBy jacocoTestReport // report is always generated after tests run
+}
+
+jacocoTestReport {
+    dependsOn test // tests are required to run before generating the report
+
+    afterEvaluate {
+        classDirectories.setFrom(files(classDirectories.files.collect {
+            fileTree(dir: it, exclude: [
+                "com/baeldung/**/ExcludedPOJO.class",
+                "com/baeldung/**/*DTO.*",
+                "**/config/*"
+            ])
+        }))
+    }
+}
+
+jacoco {
+    toolVersion = "0.8.6"
+}

gradle/gradle-jacoco/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradle/gradle-jacoco/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradle/gradle-jacoco/gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

gradle/gradle-jacoco/lombok.config

@@ -0,0 +1 @@
+lombok.addLombokGeneratedAnnotation = true

gradle/gradle-jacoco/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'gradle-jacoco'

gradle/gradle-jacoco/src/main/java/com/baeldung/config/AppConfig.java

@@ -0,0 +1,11 @@
+package com.baeldung.config;
+
+import com.baeldung.service.ProductService;
+
+public class AppConfig {
+
+    public ProductService productService() {
+        return new ProductService();
+    }
+
+}

gradle/gradle-jacoco/src/main/java/com/baeldung/domain/Product.java

@@ -0,0 +1,12 @@
+package com.baeldung.domain;
+
+import lombok.Builder;
+import lombok.Data;
+
+@Builder
+@Data
+public class Product {
+    private int id;
+    private String name;
+
+}

gradle/gradle-jacoco/src/main/java/com/baeldung/dto/ExcludedPOJO.java

@@ -0,0 +1,4 @@
+package com.baeldung.dto;
+
+public class ExcludedPOJO {
+}

gradle/gradle-jacoco/src/main/java/com/baeldung/dto/ProductDTO.java

@@ -0,0 +1,4 @@
+package com.baeldung.dto;
+
+public class ProductDTO {
+}

gradle/gradle-jacoco/src/main/java/com/baeldung/generated/Customer.java

@@ -0,0 +1,11 @@
+package com.baeldung.generated;
+
+@Generated
+public class Customer {
+    // everything in this class will be excluded from jacoco report because of @Generated
+
+    @Override
+    public String toString() {
+        return "Customer{}";
+    }
+}

gradle/gradle-jacoco/src/main/java/com/baeldung/generated/Generated.java

@@ -0,0 +1,15 @@
+package com.baeldung.generated;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+@Documented
+@Retention(RUNTIME)
+@Target({TYPE, METHOD})
+public @interface Generated {
+}

gradle/gradle-jacoco/src/main/java/com/baeldung/service/CustomerService.java

@@ -0,0 +1,16 @@
+package com.baeldung.service;
+
+import com.baeldung.generated.Generated;
+
+public class CustomerService {
+
+    //this method will be excluded from coverage due to @Generated.
+    @Generated
+    public String getProductId() {
+        return "An ID";
+    }
+
+    public String getCustomerName() {
+        return "some name";
+    }
+}

gradle/gradle-jacoco/src/main/java/com/baeldung/service/ProductService.java

@@ -0,0 +1,9 @@
+package com.baeldung.service;
+
+public class ProductService {
+    private static final double DISCOUNT = 0.25;
+
+    public double getSalePrice(double originalPrice) {
+        return originalPrice - originalPrice * DISCOUNT;
+    }
+}

gradle/gradle-jacoco/src/test/java/com/baeldung/service/CustomerServiceUnitTest.java

@@ -0,0 +1,14 @@
+package com.baeldung.service;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class CustomerServiceUnitTest {
+
+    @Test
+    public void givenCustomer_whenGetCustomer_thenReturnNewCustomer() {
+        CustomerService customerService = new CustomerService();
+        assertNotNull(customerService.getCustomerName());
+    }
+}

gradle/gradle-jacoco/src/test/java/com/baeldung/service/ProductServiceUnitTest.java

@@ -0,0 +1,15 @@
+package com.baeldung.service;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class ProductServiceUnitTest {
+
+    @Test
+    public void givenOriginalPrice_whenGetSalePrice_thenReturnsDiscountedPrice() {
+        ProductService productService = new ProductService();
+        double salePrice = productService.getSalePrice(100);
+        assertEquals(salePrice, 75);
+    }
+}

gradle/gradle-jacoco/src/test/resources/features/account_credited.feature

@@ -0,0 +1,6 @@
+Feature: Account is credited with amount
+
+  Scenario: Credit amount
+    Given account balance is 0.0
+    When the account is credited with 10.0
+    Then account should have a balance of 10.0

logging-modules/log4j/src/main/java/com/baeldung/log4j/NoAppenderExample.java

@@ -0,0 +1,18 @@
+package com.baeldung.log4j;
+
+import org.apache.log4j.Logger;
+
+public class NoAppenderExample {
+
+    private final static Logger logger = Logger.getLogger(NoAppenderExample.class);
+
+    public static void main(String[] args) {
+
+        //Setup default appender
+        //BasicConfigurator.configure();
+
+        //Define path to configuration file
+        //PropertyConfigurator.configure("src\\main\\resources\\log4j.properties");
+        logger.info("Info log message");
+    }
+}

logging-modules/log4j/src/main/resources/log4j.properties

@@ -0,0 +1,5 @@
+log4j.rootLogger=INFO, stdout
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{2}: %m%n

logging-modules/log4j/src/main/resources/log4j.xml

@@ -90,6 +90,8 @@
         <appender-ref ref="roll-by-time-and-size"/>
     </category>
 
+    <logger name="com.baeldung.log4j.NoAppenderExample"/>
+
     <root>
         <level value="DEBUG"/>
         <appender-ref ref="stdout"/>

persistence-modules/java-jpa-3/README.md

@@ -11,3 +11,5 @@ This module contains articles about the Java Persistence API (JPA) in Java.
 - [A Guide to MultipleBagFetchException in Hibernate](https://www.baeldung.com/java-hibernate-multiplebagfetchexception)
 - [How to Convert a Hibernate Proxy to a Real Entity Object](https://www.baeldung.com/hibernate-proxy-to-real-entity-object)
 - [Returning an Auto-Generated Id with JPA](https://www.baeldung.com/jpa-get-auto-generated-id)
+- [How to Return Multiple Entities In JPA Query](https://www.baeldung.com/jpa-return-multiple-entities)
+- [Defining Unique Constraints in JPA](https://www.baeldung.com/jpa-unique-constraints)

testing-modules/testing-libraries-2/lombok.config

@@ -0,0 +1 @@
+lombok.addLombokGeneratedAnnotation = true

testing-modules/testing-libraries-2/pom.xml

@@ -13,6 +13,12 @@
     </parent>
 
     <dependencies>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
@@ -85,6 +91,13 @@
                 <groupId>org.jacoco</groupId>
                 <artifactId>jacoco-maven-plugin</artifactId>
                 <version>${jacoco.version}</version>
+                <configuration>
+                    <excludes>
+                        <exclude>com/baeldung/**/ExcludedPOJO.class</exclude>
+                        <exclude>com/baeldung/**/*DTO.*</exclude>
+                        <exclude>**/config/*</exclude>
+                    </excludes>
+                </configuration>
                 <executions>
                     <execution>
                         <id>jacoco-initialize</id>

testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/config/AppConfig.java

@@ -0,0 +1,11 @@
+package com.baeldung.jacocoexclusions.config;
+
+import com.baeldung.jacocoexclusions.service.ProductService;
+
+public class AppConfig {
+
+    public ProductService productService() {
+        return new ProductService();
+    }
+
+}

testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/domain/Product.java

@@ -0,0 +1,12 @@
+package com.baeldung.jacocoexclusions.domain;
+
+import lombok.Builder;
+import lombok.Data;
+
+@Builder
+@Data
+public class Product {
+    private int id;
+    private String name;
+
+}

testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/dto/ExcludedPOJO.java

@@ -0,0 +1,4 @@
+package com.baeldung.jacocoexclusions.dto;
+
+public class ExcludedPOJO {
+}

testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/dto/ProductDTO.java

@@ -0,0 +1,4 @@
+package com.baeldung.jacocoexclusions.dto;
+
+public class ProductDTO {
+}

testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/generated/Customer.java

@@ -0,0 +1,11 @@
+package com.baeldung.jacocoexclusions.generated;
+
+@Generated
+public class Customer {
+    // everything in this class will be excluded from jacoco report because of @Generated
+
+    @Override
+    public String toString() {
+        return "Customer{}";
+    }
+}

testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/generated/Generated.java

@@ -0,0 +1,15 @@
+package com.baeldung.jacocoexclusions.generated;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+@Documented
+@Retention(RUNTIME)
+@Target({TYPE, METHOD})
+public @interface Generated {
+}

testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/service/CustomerService.java

@@ -0,0 +1,16 @@
+package com.baeldung.jacocoexclusions.service;
+
+import com.baeldung.jacocoexclusions.generated.Generated;
+
+public class CustomerService {
+
+    //this method will be excluded from coverage due to @Generated.
+    @Generated
+    public String getProductId() {
+        return "An ID";
+    }
+
+    public String getCustomerName() {
+        return "some name";
+    }
+}

testing-modules/testing-libraries-2/src/main/java/com/baeldung/jacocoexclusions/service/ProductService.java

@@ -0,0 +1,9 @@
+package com.baeldung.jacocoexclusions.service;
+
+public class ProductService {
+    private static final double DISCOUNT = 0.25;
+
+    public double getSalePrice(double originalPrice) {
+        return originalPrice - originalPrice * DISCOUNT;
+    }
+}

testing-modules/testing-libraries-2/src/test/java/com/baeldung/jacocoexclusions/service/CustomerServiceUnitTest.java

@@ -0,0 +1,14 @@
+package com.baeldung.jacocoexclusions.service;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class CustomerServiceUnitTest {
+
+    @Test
+    public void givenCustomer_whenGetCustomer_thenReturnNewCustomer() {
+        CustomerService customerService = new CustomerService();
+        assertNotNull(customerService.getCustomerName());
+    }
+}

testing-modules/testing-libraries-2/src/test/java/com/baeldung/jacocoexclusions/service/ProductServiceUnitTest.java

@@ -0,0 +1,15 @@
+package com.baeldung.jacocoexclusions.service;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class ProductServiceUnitTest {
+
+    @Test
+    public void givenOriginalPrice_whenGetSalePrice_thenReturnsDiscountedPrice() {
+        ProductService productService = new ProductService();
+        double salePrice = productService.getSalePrice(100);
+        assertEquals(salePrice, 75);
+    }
+}