From 9b299f01ae6f826306f2ad76eb01d9d1bbe4ca27 Mon Sep 17 00:00:00 2001
From: panos-kakos <102670093+panos-kakos@users.noreply.github.com>
Date: Thu, 4 Jan 2024 20:08:03 +0200
Subject: [PATCH] [JAVA-27683] Fix failing module core-java-modules - upgrade
 to JDK 17 (#15495)

---
 core-java-modules/core-java-17/pom.xml           |  6 ------
 .../core-java-collections-list-4/pom.xml         |  6 ------
 .../core-java-collections-maps-4/pom.xml         | 11 -----------
 .../core-java-collections-set-2/pom.xml          | 10 ----------
 .../core-java-collections-set/pom.xml            |  7 -------
 .../core-java-concurrency-simple/pom.xml         | 10 ----------
 .../core-java-date-operations-1/pom.xml          |  7 -------
 .../core-java-datetime-conversion/pom.xml        |  7 -------
 .../core-java-datetime-string-2/pom.xml          | 10 ----------
 .../core-java-datetime-string/pom.xml            |  7 -------
 core-java-modules/core-java-httpclient/pom.xml   |  7 -------
 core-java-modules/core-java-io-4/pom.xml         |  7 +++++--
 core-java-modules/core-java-jndi/pom.xml         | 10 +++-------
 .../jndi/exceptions/JndiExceptionsUnitTest.java  |  2 +-
 core-java-modules/core-java-jvm-2/pom.xml        |  5 -----
 core-java-modules/core-java-lang-6/pom.xml       |  5 -----
 .../core-java-lang-oop-generics/pom.xml          |  8 --------
 core-java-modules/core-java-os-2/pom.xml         | 11 -----------
 core-java-modules/core-java-os/pom.xml           |  7 -------
 core-java-modules/core-java-streams-2/pom.xml    |  5 -----
 core-java-modules/core-java-streams-4/pom.xml    |  5 -----
 core-java-modules/core-java-streams-5/pom.xml    |  5 -----
 core-java-modules/core-java-streams-maps/pom.xml |  8 --------
 .../core-java-streams-simple/pom.xml             |  3 ---
 core-java-modules/core-java-streams/pom.xml      |  5 -----
 .../core-java-string-algorithms-3/pom.xml        |  5 -----
 .../core-java-string-apis-2/pom.xml              |  4 ----
 .../core-java-string-operations-3/pom.xml        |  8 +-------
 .../core-java-string-operations-4/pom.xml        |  8 +-------
 .../core-java-string-operations-5/pom.xml        |  6 ------
 core-java-modules/pom.xml                        | 16 ++++++++--------
 31 files changed, 19 insertions(+), 202 deletions(-)

diff --git a/core-java-modules/core-java-17/pom.xml b/core-java-modules/core-java-17/pom.xml
index e2d854be44..aae19ff85e 100644
--- a/core-java-modules/core-java-17/pom.xml
+++ b/core-java-modules/core-java-17/pom.xml
@@ -21,10 +21,7 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>${maven-compiler-plugin.version}</version>
                 <configuration>
-                    <release>${maven.compiler.release}</release>
                     <compilerArgs>--enable-preview</compilerArgs>
-                    <source>${maven.compiler.source.version}</source>
-                    <target>${maven.compiler.target.version}</target>
                     <annotationProcessorPaths>
                         <path>
                             <groupId>org.openjdk.jmh</groupId>
@@ -69,9 +66,6 @@
     </dependencies>
 
     <properties>
-        <maven.compiler.source.version>17</maven.compiler.source.version>
-        <maven.compiler.target.version>17</maven.compiler.target.version>
-        <maven.compiler.release>17</maven.compiler.release>
         <surefire.plugin.version>3.0.0-M5</surefire.plugin.version>
     </properties>
 
diff --git a/core-java-modules/core-java-collections-list-4/pom.xml b/core-java-modules/core-java-collections-list-4/pom.xml
index 6d068298ec..0f170b0b85 100644
--- a/core-java-modules/core-java-collections-list-4/pom.xml
+++ b/core-java-modules/core-java-collections-list-4/pom.xml
@@ -75,10 +75,6 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source.version}</source>
-                    <target>${maven.compiler.target.version}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
@@ -89,8 +85,6 @@
         <colt.version>1.2.0</colt.version>
         <apache-commons.version>3.0</apache-commons.version>
         <assertj.version>3.22.0</assertj.version>
-        <maven.compiler.source.version>17</maven.compiler.source.version>
-        <maven.compiler.target.version>17</maven.compiler.target.version>
         <spring.version>5.3.22</spring.version>
     </properties>
 
diff --git a/core-java-modules/core-java-collections-maps-4/pom.xml b/core-java-modules/core-java-collections-maps-4/pom.xml
index f1734b7379..5f7b40fbf6 100644
--- a/core-java-modules/core-java-collections-maps-4/pom.xml
+++ b/core-java-modules/core-java-collections-maps-4/pom.xml
@@ -55,19 +55,8 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-set-2/pom.xml b/core-java-modules/core-java-collections-set-2/pom.xml
index 7274f1861b..4f1944f269 100644
--- a/core-java-modules/core-java-collections-set-2/pom.xml
+++ b/core-java-modules/core-java-collections-set-2/pom.xml
@@ -44,18 +44,8 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
-    <properties>
-        <maven.compiler.source>8</maven.compiler.source>
-        <maven.compiler.target>8</maven.compiler.target>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-collections-set/pom.xml b/core-java-modules/core-java-collections-set/pom.xml
index ed3114742c..1fb59db991 100644
--- a/core-java-modules/core-java-collections-set/pom.xml
+++ b/core-java-modules/core-java-collections-set/pom.xml
@@ -36,18 +36,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
     <properties>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
         <gson.version>2.8.5</gson.version>
     </properties>
 
diff --git a/core-java-modules/core-java-concurrency-simple/pom.xml b/core-java-modules/core-java-concurrency-simple/pom.xml
index 720ab5a0ed..eb196027aa 100644
--- a/core-java-modules/core-java-concurrency-simple/pom.xml
+++ b/core-java-modules/core-java-concurrency-simple/pom.xml
@@ -33,18 +33,8 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source.version}</source>
-                    <target>${maven.compiler.target.version}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
-    <properties>
-        <maven.compiler.source.version>17</maven.compiler.source.version>
-        <maven.compiler.target.version>17</maven.compiler.target.version>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-date-operations-1/pom.xml b/core-java-modules/core-java-date-operations-1/pom.xml
index 3d7335c86e..45a885db5e 100644
--- a/core-java-modules/core-java-date-operations-1/pom.xml
+++ b/core-java-modules/core-java-date-operations-1/pom.xml
@@ -44,11 +44,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
@@ -56,8 +51,6 @@
     <properties>
         <joda-time.version>2.12.5</joda-time.version>
         <hirondelle-date4j.version>RELEASE</hirondelle-date4j.version>
-        <maven.compiler.source>1.9</maven.compiler.source>
-        <maven.compiler.target>1.9</maven.compiler.target>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-datetime-conversion/pom.xml b/core-java-modules/core-java-datetime-conversion/pom.xml
index 8e148edaad..89af441ed4 100644
--- a/core-java-modules/core-java-datetime-conversion/pom.xml
+++ b/core-java-modules/core-java-datetime-conversion/pom.xml
@@ -44,19 +44,12 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
     <properties>
         <joda-time.version>2.12.5</joda-time.version>
-        <maven.compiler.source>1.9</maven.compiler.source>
-        <maven.compiler.target>1.9</maven.compiler.target>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-datetime-string-2/pom.xml b/core-java-modules/core-java-datetime-string-2/pom.xml
index 458fba25a2..d619b0af84 100644
--- a/core-java-modules/core-java-datetime-string-2/pom.xml
+++ b/core-java-modules/core-java-datetime-string-2/pom.xml
@@ -18,18 +18,8 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
-    <properties>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-datetime-string/pom.xml b/core-java-modules/core-java-datetime-string/pom.xml
index 292a38a5af..9dff35ac94 100644
--- a/core-java-modules/core-java-datetime-string/pom.xml
+++ b/core-java-modules/core-java-datetime-string/pom.xml
@@ -54,11 +54,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
@@ -67,8 +62,6 @@
         <commons-validator.version>1.7</commons-validator.version>
         <joda-time.version>2.12.5</joda-time.version>
         <hirondelle-date4j.version>RELEASE</hirondelle-date4j.version>
-        <maven.compiler.source>1.9</maven.compiler.source>
-        <maven.compiler.target>1.9</maven.compiler.target>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-httpclient/pom.xml b/core-java-modules/core-java-httpclient/pom.xml
index fc95366392..593e73b5cb 100644
--- a/core-java-modules/core-java-httpclient/pom.xml
+++ b/core-java-modules/core-java-httpclient/pom.xml
@@ -44,18 +44,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source.version}</source>
-                    <target>${maven.compiler.target.version}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
     <properties>
-        <maven.compiler.source.version>11</maven.compiler.source.version>
-        <maven.compiler.target.version>11</maven.compiler.target.version>
         <assertj.version>3.22.0</assertj.version>
         <mockserver.version>5.11.2</mockserver.version>
         <wiremock.version>3.3.1</wiremock.version>
diff --git a/core-java-modules/core-java-io-4/pom.xml b/core-java-modules/core-java-io-4/pom.xml
index 30177e5c09..4663f6a521 100644
--- a/core-java-modules/core-java-io-4/pom.xml
+++ b/core-java-modules/core-java-io-4/pom.xml
@@ -34,13 +34,16 @@
         <dependency>
             <groupId>commons-codec</groupId>
             <artifactId>commons-codec</artifactId>
-            <version>1.15</version>
+            <version>${commons-codec.version}</version>
         </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>31.1-jre</version>
+            <version>${guava.version}</version>
         </dependency>
     </dependencies>
 
+    <properties>
+        <commons-codec.version>1.16.0</commons-codec.version>
+    </properties>
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-jndi/pom.xml b/core-java-modules/core-java-jndi/pom.xml
index e48bec6622..bd3ff06c7c 100644
--- a/core-java-modules/core-java-jndi/pom.xml
+++ b/core-java-modules/core-java-jndi/pom.xml
@@ -50,8 +50,9 @@
     <build>
         <plugins>
             <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.22.2</version>
+                <version>${maven-surefire-plugin.version}</version>
                 <configuration combine.self="override">
                     <forkCount>3</forkCount>
                     <reuseForks>false</reuseForks>
@@ -64,10 +65,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>${source.version}</source>
-                    <target>${target.version}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
@@ -75,8 +72,7 @@
     <properties>
         <spring.version>5.0.9.RELEASE</spring.version>
         <apacheds.version>2.0.0.AM26</apacheds.version>
-        <source.version>1.8</source.version>
-        <target.version>1.8</target.version>
+        <maven-surefire-plugin.version>3.2.3</maven-surefire-plugin.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-jndi/src/test/java/com/baeldung/jndi/exceptions/JndiExceptionsUnitTest.java b/core-java-modules/core-java-jndi/src/test/java/com/baeldung/jndi/exceptions/JndiExceptionsUnitTest.java
index 4d202f8f0c..671bba6ef9 100644
--- a/core-java-modules/core-java-jndi/src/test/java/com/baeldung/jndi/exceptions/JndiExceptionsUnitTest.java
+++ b/core-java-modules/core-java-jndi/src/test/java/com/baeldung/jndi/exceptions/JndiExceptionsUnitTest.java
@@ -12,7 +12,7 @@ import org.junit.jupiter.api.Order;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestMethodOrder;
 import org.springframework.jndi.JndiTemplate;
-import org.springframework.mock.jndi.SimpleNamingContextBuilder;
+import org.springframework.mock.jndi.*;
 
 @TestMethodOrder(MethodOrderer.OrderAnnotation.class)
 public class JndiExceptionsUnitTest {
diff --git a/core-java-modules/core-java-jvm-2/pom.xml b/core-java-modules/core-java-jvm-2/pom.xml
index 2ccc847a6f..a2e553eacf 100644
--- a/core-java-modules/core-java-jvm-2/pom.xml
+++ b/core-java-modules/core-java-jvm-2/pom.xml
@@ -31,10 +31,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
                     <compilerArgs>
                         <arg>--add-exports=java.base/jdk.internal.vm.annotation=ALL-UNNAMED</arg>
                     </compilerArgs>
@@ -46,8 +43,6 @@
     <properties>
         <jol-core.version>0.10</jol-core.version>
         <reflections.version>0.10.2</reflections.version>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-lang-6/pom.xml b/core-java-modules/core-java-lang-6/pom.xml
index a47ed459f6..accb014963 100644
--- a/core-java-modules/core-java-lang-6/pom.xml
+++ b/core-java-modules/core-java-lang-6/pom.xml
@@ -40,8 +40,6 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>17</source>
-                    <target>17</target>
                     <annotationProcessorPaths>
                         <!-- https://mvnrepository.com/artifact/org.mapstruct/mapstruct-processor -->
                         <path>
@@ -61,9 +59,6 @@
     </build>
 
     <properties>
-        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <mapstruct.version>1.6.0.Beta1</mapstruct.version>
         <jmh.version>1.37</jmh.version>
     </properties>
diff --git a/core-java-modules/core-java-lang-oop-generics/pom.xml b/core-java-modules/core-java-lang-oop-generics/pom.xml
index 9b01a97918..9c453cae10 100644
--- a/core-java-modules/core-java-lang-oop-generics/pom.xml
+++ b/core-java-modules/core-java-lang-oop-generics/pom.xml
@@ -24,10 +24,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
                     <compilerArguments>
                         <Xlint:unchecked/>
                     </compilerArguments>
@@ -36,9 +33,4 @@
         </plugins>
     </build>
 
-    <properties>
-        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-os-2/pom.xml b/core-java-modules/core-java-os-2/pom.xml
index 11b0585ae7..27dc8a0c8b 100644
--- a/core-java-modules/core-java-os-2/pom.xml
+++ b/core-java-modules/core-java-os-2/pom.xml
@@ -25,18 +25,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
-
-    <properties>
-        <maven.compiler.source>1.9</maven.compiler.source>
-        <maven.compiler.target>1.9</maven.compiler.target>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-os/pom.xml b/core-java-modules/core-java-os/pom.xml
index cd5b479974..cc1fac0ec2 100644
--- a/core-java-modules/core-java-os/pom.xml
+++ b/core-java-modules/core-java-os/pom.xml
@@ -64,19 +64,12 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
     <properties>
         <collections-generic.version>4.01</collections-generic.version>
-        <maven.compiler.source>1.9</maven.compiler.source>
-        <maven.compiler.target>1.9</maven.compiler.target>
         <unix4j.version>0.4</unix4j.version>
         <grep4j.version>1.8.7</grep4j.version>
     </properties>
diff --git a/core-java-modules/core-java-streams-2/pom.xml b/core-java-modules/core-java-streams-2/pom.xml
index 9725497b04..fd8274b268 100644
--- a/core-java-modules/core-java-streams-2/pom.xml
+++ b/core-java-modules/core-java-streams-2/pom.xml
@@ -31,9 +31,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <maven.compiler.source>1.9</maven.compiler.source>
-        <maven.compiler.target>1.9</maven.compiler.target>
-    </properties>
-
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-streams-4/pom.xml b/core-java-modules/core-java-streams-4/pom.xml
index 383f14d573..79124345a6 100644
--- a/core-java-modules/core-java-streams-4/pom.xml
+++ b/core-java-modules/core-java-streams-4/pom.xml
@@ -102,10 +102,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
                     <compilerArgument>-parameters</compilerArgument>
                 </configuration>
             </plugin>
@@ -115,8 +112,6 @@
     <properties>
         <!-- testing -->
         <assertj.version>3.23.1</assertj.version>
-        <maven.compiler.source>12</maven.compiler.source>
-        <maven.compiler.target>12</maven.compiler.target>
         <rx.java.version>1.2.5</rx.java.version>
         <rx.java2.version>2.2.2</rx.java2.version>
         <rx.java3.version>3.1.5</rx.java3.version>
diff --git a/core-java-modules/core-java-streams-5/pom.xml b/core-java-modules/core-java-streams-5/pom.xml
index bb1703dada..6ff93a5401 100644
--- a/core-java-modules/core-java-streams-5/pom.xml
+++ b/core-java-modules/core-java-streams-5/pom.xml
@@ -68,8 +68,6 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
                     <compilerArgument>-parameters</compilerArgument>
                 </configuration>
             </plugin>
@@ -77,9 +75,6 @@
     </build>
 
     <properties>
-        <!-- testing -->
-        <maven.compiler.source>12</maven.compiler.source>
-        <maven.compiler.target>12</maven.compiler.target>
         <vavr.version>0.10.2</vavr.version>
     </properties>
 
diff --git a/core-java-modules/core-java-streams-maps/pom.xml b/core-java-modules/core-java-streams-maps/pom.xml
index 8942a1f55f..ef1e3c688d 100644
--- a/core-java-modules/core-java-streams-maps/pom.xml
+++ b/core-java-modules/core-java-streams-maps/pom.xml
@@ -47,18 +47,10 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
                     <compilerArgument>-parameters</compilerArgument>
                 </configuration>
             </plugin>
         </plugins>
     </build>
 
-    <properties>
-        <!-- testing -->
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
-    </properties>
-
 </project>
diff --git a/core-java-modules/core-java-streams-simple/pom.xml b/core-java-modules/core-java-streams-simple/pom.xml
index 5910e9daf2..30a5b3f568 100644
--- a/core-java-modules/core-java-streams-simple/pom.xml
+++ b/core-java-modules/core-java-streams-simple/pom.xml
@@ -44,9 +44,6 @@
 
     <properties>
         <throwing-function.version>1.5.1</throwing-function.version>
-        <maven.compiler.source.version>17</maven.compiler.source.version>
-        <maven.compiler.target.version>17</maven.compiler.target.version>
-        <maven.compiler.release>17</maven.compiler.release>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-streams/pom.xml b/core-java-modules/core-java-streams/pom.xml
index 005968d214..e5e6adf3c0 100644
--- a/core-java-modules/core-java-streams/pom.xml
+++ b/core-java-modules/core-java-streams/pom.xml
@@ -43,10 +43,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
                     <compilerArgument>-parameters</compilerArgument>
                 </configuration>
             </plugin>
@@ -57,8 +54,6 @@
         <vavr.version>0.10.4</vavr.version>
         <protonpack.version>1.16</protonpack.version>
         <streamex.version>0.8.1</streamex.version>
-        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-string-algorithms-3/pom.xml b/core-java-modules/core-java-string-algorithms-3/pom.xml
index 548a3dc3f8..9d3b824df4 100644
--- a/core-java-modules/core-java-string-algorithms-3/pom.xml
+++ b/core-java-modules/core-java-string-algorithms-3/pom.xml
@@ -47,10 +47,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
                     <compilerArgument>-parameters</compilerArgument>
                 </configuration>
             </plugin>
@@ -58,8 +55,6 @@
     </build>
 
     <properties>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
         <validator.version>1.7</validator.version>
         <emoji-java.version>5.1.1</emoji-java.version>
         <apache-commons-text.version>1.10.0</apache-commons-text.version>
diff --git a/core-java-modules/core-java-string-apis-2/pom.xml b/core-java-modules/core-java-string-apis-2/pom.xml
index 0289a18e85..c77ea7c64b 100644
--- a/core-java-modules/core-java-string-apis-2/pom.xml
+++ b/core-java-modules/core-java-string-apis-2/pom.xml
@@ -37,10 +37,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>11</source>
-                    <target>11</target>
-                </configuration>
             </plugin>
         </plugins>
         <resources>
diff --git a/core-java-modules/core-java-string-operations-3/pom.xml b/core-java-modules/core-java-string-operations-3/pom.xml
index 59d14805a0..a82a0d5b11 100644
--- a/core-java-modules/core-java-string-operations-3/pom.xml
+++ b/core-java-modules/core-java-string-operations-3/pom.xml
@@ -51,10 +51,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
@@ -67,9 +63,7 @@
     </repositories>
 
     <properties>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
-        <spring-core.version>5.3.9</spring-core.version>
+        <spring-core.version>6.1.2</spring-core.version>
         <maven-artifact.version>3.6.3</maven-artifact.version>
         <gradle-core.version>6.1.1</gradle-core.version>
         <jackson-core.version>2.16.0</jackson-core.version>
diff --git a/core-java-modules/core-java-string-operations-4/pom.xml b/core-java-modules/core-java-string-operations-4/pom.xml
index b9591763a0..2537deb48b 100644
--- a/core-java-modules/core-java-string-operations-4/pom.xml
+++ b/core-java-modules/core-java-string-operations-4/pom.xml
@@ -47,19 +47,13 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
     <properties>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
         <opencsv.version>5.8</opencsv.version>
-        <spring-core.version>5.3.13</spring-core.version>
+        <spring-core.version>6.1.2</spring-core.version>
         <commons-text.version>1.10.0</commons-text.version>
     </properties>
 
diff --git a/core-java-modules/core-java-string-operations-5/pom.xml b/core-java-modules/core-java-string-operations-5/pom.xml
index 2a2a353984..768a04ba23 100644
--- a/core-java-modules/core-java-string-operations-5/pom.xml
+++ b/core-java-modules/core-java-string-operations-5/pom.xml
@@ -31,17 +31,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
             </plugin>
         </plugins>
     </build>
 
     <properties>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
         <apache.commons.lang3.version>3.12.0</apache.commons.lang3.version>
         <commons-text.version>1.10.0</commons-text.version>
     </properties>
diff --git a/core-java-modules/pom.xml b/core-java-modules/pom.xml
index 038930e0d4..50a7fed934 100644
--- a/core-java-modules/pom.xml
+++ b/core-java-modules/pom.xml
@@ -59,15 +59,15 @@
         <module>core-java-lang-oop-constructors-2</module>
         <module>core-java-methods</module>
         <module>core-java-networking-3</module>
-        <!--<module>core-java-os</module>--> <!-- failing after upgrading to jdk17 -->
+        <module>core-java-os</module>
         <module>core-java-perf-2</module>
         <module>core-java-streams-4</module>
         <module>core-java-streams-5</module>
         <module>core-java-streams-collect</module>
         <module>core-java-streams-maps</module>
-        <!--<module>core-java-string-operations-3</module>--> <!-- failing after upgrading to jdk17 -->
+        <module>core-java-string-operations-3</module>
         <module>core-java-string-operations-4</module>
-        <!--<module>core-java-string-operations-5</module>--> <!-- failing after upgrading to jdk17 -->
+        <module>core-java-string-operations-5</module>
         <!--<module>core-java-strings</module> Failing test cases JAVA-24414-->
         <module>core-java-time-measurements</module>
         <module>core-java-annotations</module>
@@ -122,13 +122,13 @@
         <module>core-java-io</module>
         <module>core-java-io-2</module>
         <module>core-java-io-3</module>
-        <!--<module>core-java-io-4</module>--> <!-- failing after upgrading to jdk17 -->
+        <module>core-java-io-4</module>
         <module>core-java-io-5</module>
         <module>core-java-io-apis</module>
         <module>core-java-io-apis-2</module>
         <module>core-java-io-conversions</module>
         <module>core-java-jar</module>
-        <!--<module>core-java-jndi</module>--> <!-- failing after upgrading to jdk17 -->
+        <module>core-java-jndi</module>
         <module>core-java-jvm</module>
         <module>core-java-jvm-2</module>
         <module>core-java-jvm-3</module>
@@ -143,11 +143,11 @@
         <module>core-java-lang-oop-constructors</module>
         <module>core-java-lang-oop-patterns</module>
         <module>core-java-lang-oop-generics</module>
-        <!--<module>core-java-lang-oop-modifiers</module>--> <!-- failing after upgrading to jdk17 -->
+        <module>core-java-lang-oop-modifiers</module>
         <module>core-java-lang-oop-types</module>
         <module>core-java-lang-oop-types-2</module>
         <module>core-java-lang-oop-inheritance</module>
-        <!--<module>core-java-lang-oop-methods</module>--> <!-- failing after upgrading to jdk17 -->
+        <module>core-java-lang-oop-methods</module>
         <module>core-java-lang-oop-others</module>
         <module>core-java-lang-operators</module>
         <module>core-java-lang-operators-2</module>
@@ -187,7 +187,7 @@
         <module>core-java-string-algorithms-3</module>
         <module>core-java-string-algorithms-4</module>
         <module>core-java-string-apis</module>
-        <!--<module>core-java-string-apis-2</module>--> <!-- failing after upgrading to jdk17 -->
+        <module>core-java-string-apis-2</module>
         <module>core-java-swing</module>
         <module>core-java-string-conversions</module>
         <module>core-java-string-conversions-2</module>