Upgraded to Spring Boot 3.2.x and JDK 21

.gitignore

@@ -18,3 +18,5 @@ mvnw*
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+.idea/**
+00-framework-tool-introductions/04.Mockito-Introduction-In-5-Steps/mockito-demo.iml

00-framework-tool-introductions/02.Maven-Introduction-In-5-Steps/pom.xml

@@ -15,14 +15,14 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 		<maven-jar-plugin.version>3.1.1</maven-jar-plugin.version>
 	</properties>
 

00-framework-tool-introductions/02.Maven-Introduction-In-5-Steps/readme.md

@@ -79,14 +79,14 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
         <maven-jar-plugin.version>3.1.1</maven-jar-plugin.version>
 	</properties>
 

00-framework-tool-introductions/04.Mockito-Introduction-In-5-Steps/Step5.md

@@ -15,7 +15,7 @@ Current Directory : /Users/rangakaranam/Ranga/git/00.courses/spring-boot-master-
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.in28minutes.mockito</groupId>
@@ -24,7 +24,7 @@ Current Directory : /Users/rangakaranam/Ranga/git/00.courses/spring-boot-master-
 	<name>mockito-demo</name>
 	<description>Demo project for Spring Boot</description>
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -98,7 +98,7 @@ package com.in28minutes.mockito.mockitodemo.business;
 
 public class SomeBusinessImpl {
 
-	private DataService dataService;
+	private final DataService dataService;
 
 	public SomeBusinessImpl(DataService dataService) {
 		super();
@@ -119,8 +119,6 @@ public class SomeBusinessImpl {
 
 interface DataService {
 	int[] retrieveAllData();
-
-
 }
 ```
 ---

00-framework-tool-introductions/04.Mockito-Introduction-In-5-Steps/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.in28minutes.mockito</groupId>
@@ -14,7 +14,7 @@
 	<name>mockito-demo</name>
 	<description>Demo project for Spring Boot</description>
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 	<dependencies>
 		<dependency>

00-framework-tool-introductions/04.Mockito-Introduction-In-5-Steps/readme.md

@@ -63,7 +63,7 @@ Current Directory : /Users/rangakaranam/Ranga/git/00.courses/spring-boot-master-
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.in28minutes.mockito</groupId>
@@ -72,7 +72,7 @@ Current Directory : /Users/rangakaranam/Ranga/git/00.courses/spring-boot-master-
 	<name>mockito-demo</name>
 	<description>Demo project for Spring Boot</description>
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 	<dependencies>
 		<dependency>

00-framework-tool-introductions/04.Mockito-Introduction-In-5-Steps/src/main/java/com/in28minutes/mockito/mockitodemo/business/SomeBusinessImpl.java

@@ -2,7 +2,7 @@
 
 public class SomeBusinessImpl {
 
-	private DataService dataService;
+	private final DataService dataService;
 
 	public SomeBusinessImpl(DataService dataService) {
 		super();
@@ -23,6 +23,4 @@ public int findTheGreatestFromAllData() {
 
 interface DataService {
 	int[] retrieveAllData();
-
-
 }

00-framework-tool-introductions/05.Spring-Boot-Introduction-In-10-Steps/final.md

@@ -38,7 +38,7 @@ off
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.in28minutes.springboot</groupId>
@@ -47,7 +47,7 @@ off
 	<name>learn-spring-boot</name>
 	<description>Demo project for Spring Boot</description>
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 	<dependencies>
 

00-framework-tool-introductions/05.Spring-Boot-Introduction-In-10-Steps/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.in28minutes.springboot</groupId>
@@ -14,7 +14,7 @@
 	<name>learn-spring-boot</name>
 	<description>Demo project for Spring Boot</description>
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 	<dependencies>
 

00-framework-tool-introductions/05.Spring-Boot-Introduction-In-10-Steps/readme.md

@@ -55,7 +55,7 @@ off
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.in28minutes.springboot</groupId>
@@ -64,7 +64,7 @@ off
 	<name>learn-spring-boot</name>
 	<description>Demo project for Spring Boot</description>
 	<properties>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 	<dependencies>
 

00-framework-tool-introductions/05.Spring-Boot-Introduction-In-10-Steps/src/main/java/com/in28minutes/springboot/learnspringboot/CourseController.java

@@ -1,6 +1,5 @@
 package com.in28minutes.springboot.learnspringboot;
 
-import java.util.Arrays;
 import java.util.List;
 
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -11,12 +10,11 @@ public class CourseController {
 
 	@RequestMapping("/courses")
 	public List<Course> retrieveAllCourses() {
-		return Arrays.asList(
+		return List.of(
 				new Course(1, "Learn AWS", "in28minutes"),
 				new Course(2, "Learn DevOps", "in28minutes"),
 				new Course(3, "Learn Azure", "in28minutes"),
 				new Course(4, "Learn GCP", "in28minutes")
-
 				);
 	}
 

01-spring-in-depth/Step10.md

@@ -21,14 +21,14 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 
 	<dependencies>
@@ -164,7 +164,7 @@ public class QuickSortAlgorithm implements SortAlgorithm {
 package com.in28minutes.spring.basics.springin5steps;
 
 public interface SortAlgorithm {
-	public int[] sort(int[] numbers);
+    int[] sort(int[] numbers);
 }
 ```
 ---
@@ -190,12 +190,9 @@ public class SpringIn5StepsApplication {
 		// BinarySearchImpl binarySearch =
 		// new BinarySearchImpl(new QuickSortAlgorithm());
 		// Application Context
-		ApplicationContext applicationContext = 
-				SpringApplication.run(SpringIn5StepsApplication.class, args);
-		BinarySearchImpl binarySearch = 
-				applicationContext.getBean(BinarySearchImpl.class);
-		int result = 
-				binarySearch.binarySearch(new int[] { 12, 4, 6 }, 3);
+		var applicationContext = SpringApplication.run(SpringIn5StepsApplication.class, args);
+		BinarySearchImpl binarySearch = applicationContext.getBean(BinarySearchImpl.class);
+		int result = binarySearch.binarySearch(new int[] { 12, 4, 6 }, 3);
 		System.out.println(result);
 	}
 }

01-spring-in-depth/Step12.md

@@ -21,14 +21,14 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 
 	<dependencies>
@@ -162,7 +162,7 @@ public class QuickSortAlgorithm implements SortAlgorithm {
 package com.in28minutes.spring.basics.springin5steps;
 
 public interface SortAlgorithm {
-	public int[] sort(int[] numbers);
+	int[] sort(int[] numbers);
 }
 ```
 ---
@@ -188,12 +188,9 @@ public class SpringIn5StepsApplication {
 		// BinarySearchImpl binarySearch =
 		// new BinarySearchImpl(new QuickSortAlgorithm());
 		// Application Context
-		ApplicationContext applicationContext = 
-				SpringApplication.run(SpringIn5StepsApplication.class, args);
-		BinarySearchImpl binarySearch = 
-				applicationContext.getBean(BinarySearchImpl.class);
-		int result = 
-				binarySearch.binarySearch(new int[] { 12, 4, 6 }, 3);
+		var applicationContext = SpringApplication.run(SpringIn5StepsApplication.class, args);
+		var binarySearch = applicationContext.getBean(BinarySearchImpl.class);
+		int result = binarySearch.binarySearch(new int[] { 12, 4, 6 }, 3);
 		System.out.println(result);
 	}
 }

01-spring-in-depth/Step14.md

@@ -21,14 +21,14 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 
 	<dependencies>
@@ -171,7 +171,7 @@ public class QuickSortAlgorithm implements SortAlgorithm {
 package com.in28minutes.spring.basics.springin5steps;
 
 public interface SortAlgorithm {
-	public int[] sort(int[] numbers);
+	int[] sort(int[] numbers);
 }
 ```
 ---
@@ -197,14 +197,11 @@ public class SpringIn5StepsApplication {
 		// BinarySearchImpl binarySearch =
 		// new BinarySearchImpl(new QuickSortAlgorithm());
 		// Application Context
-		ApplicationContext applicationContext = 
-				SpringApplication.run(SpringIn5StepsApplication.class, args);
+		var applicationContext = SpringApplication.run(SpringIn5StepsApplication.class, args);
 
-		BinarySearchImpl binarySearch = 
-				applicationContext.getBean(BinarySearchImpl.class);
+		var binarySearch = applicationContext.getBean(BinarySearchImpl.class);
 
-		BinarySearchImpl binarySearch1 = 
-				applicationContext.getBean(BinarySearchImpl.class);
+		var binarySearch1 = applicationContext.getBean(BinarySearchImpl.class);
 
 		System.out.println(binarySearch);
 		System.out.println(binarySearch1);

01-spring-in-depth/Step15.md

@@ -21,14 +21,14 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.1.1</version>
+		<version>3.2.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>17</java.version>
+		<java.version>21</java.version>
 	</properties>
 
 	<dependencies>
@@ -245,20 +245,17 @@ public class SpringIn5StepsBasicApplication {
 		// BinarySearchImpl binarySearch =
 		// new BinarySearchImpl(new QuickSortAlgorithm());
 		// Application Context
-		ApplicationContext applicationContext = 
+		var applicationContext = 
 				SpringApplication.run(SpringIn5StepsBasicApplication.class, args);
 
-		BinarySearchImpl binarySearch = 
-				applicationContext.getBean(BinarySearchImpl.class);
+		var binarySearch = applicationContext.getBean(BinarySearchImpl.class);
 
-		BinarySearchImpl binarySearch1 = 
-				applicationContext.getBean(BinarySearchImpl.class);
+		var binarySearch1 = applicationContext.getBean(BinarySearchImpl.class);
 
 		System.out.println(binarySearch);
 		System.out.println(binarySearch1);
 
-		int result = 
-				binarySearch.binarySearch(new int[] { 12, 4, 6 }, 3);
+		int result = binarySearch.binarySearch(new int[] { 12, 4, 6 }, 3);
 		System.out.println(result);
 	}
 }
@@ -281,19 +278,15 @@ import com.in28minutes.spring.basics.springin5steps.scope.PersonDAO;
 @SpringBootApplication
 public class SpringIn5StepsScopeApplication {
 
-	private static Logger LOGGER = 
-			LoggerFactory.getLogger(SpringIn5StepsScopeApplication.class); 
+	private static Logger LOGGER = LoggerFactory.getLogger(SpringIn5StepsScopeApplication.class); 
 
 	public static void main(String[] args) {
 
-		ApplicationContext applicationContext = 
-				SpringApplication.run(SpringIn5StepsScopeApplication.class, args);
+		var applicationContext = SpringApplication.run(SpringIn5StepsScopeApplication.class, args);
 
-		PersonDAO personDao = 
-				applicationContext.getBean(PersonDAO.class);
+		var personDao = applicationContext.getBean(PersonDAO.class);
 
-		PersonDAO personDao2 = 
-				applicationContext.getBean(PersonDAO.class);
+		var personDao2 = applicationContext.getBean(PersonDAO.class);
 
 		LOGGER.info("{}", personDao);
 		LOGGER.info("{}", personDao.getJdbcConnection());