added specified imports, reallocated the variables to class level and instance...

added specified imports, reallocated the variables to class level and instance variable as per the requirement,Used logger for logging in almost every classes

.idea/.name

+java9Features
\ No newline at end of file

.idea/checkstyle-idea.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CheckStyle-IDEA">
+    <option name="configuration">
+      <map>
+        <entry key="checkstyle-version" value="8.29" />
+        <entry key="copy-libs" value="false" />
+        <entry key="location-0" value="BUNDLED:(bundled):Sun Checks" />
+        <entry key="location-1" value="BUNDLED:(bundled):Google Checks" />
+        <entry key="scan-before-checkin" value="false" />
+        <entry key="scanscope" value="JavaOnly" />
+        <entry key="suppress-errors" value="false" />
+      </map>
+    </option>
+  </component>
+</project>
\ No newline at end of file

.idea/gradle.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <option name="delegatedBuild" value="true" />
+        <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="modules">

.idea/jarRepositories.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file

.idea/misc.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_9" default="false" project-jdk-name="11" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_9" default="false" project-jdk-name="9" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file

.idea/vcs.xml

@@ -2,5 +2,6 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="$PROJECT_DIR$/../" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
   </component>
 </project>
\ No newline at end of file

build.gradle

@@ -12,5 +12,7 @@ repositories {
 }
 
 dependencies {
+    compileOnly 'org.projectlombok:lombok:1.18.12'
+
     testCompile group: 'junit', name: 'junit', version: '4.12'
 }

gradle/wrapper/gradle-wrapper.properties

+#Fri Apr 03 12:57:31 IST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip

src/main/java/com/nisum/java9Features/DiamondOperator/MyGenClass.java

 package com.nisum.java9Features.DiamondOperator;
 
+import java.util.logging.Logger;
+
 public class MyGenClass<T> {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     T obj;
     public MyGenClass(T obj)
     {
@@ -12,6 +16,6 @@ public class MyGenClass<T> {
     }
     public void process()
     {
-     System.out.println("Processing obj...");
+     log.info("Processing obj...");
     }
 }

src/main/java/com/nisum/java9Features/DiamondOperator/Test.java

 package com.nisum.java9Features.DiamondOperator;
 
+import java.util.logging.Logger;
+
 public class Test {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
     public static void main(String[] args) {
         MyGenClass<String> c1 = new MyGenClass<String>("Durga") {
             public void process() {
-                System.out.println("Processing... " + getObj());
+                log.info("Processing... " + getObj());
             }
         };
         c1.process();
 
         MyGenClass<String> c2 = new MyGenClass<>("Pavan") {
             public void process() {
-                System.out.println("Processing... " + getObj());
+                log.info("Processing... " + getObj());
             }
         };
         c2.process();

src/main/java/com/nisum/java9Features/FactoryMethodsForUnmodifiableCollections/UnmodifiableList.java

 package com.nisum.java9Features.FactoryMethodsForUnmodifiableCollections;
 
-import java.util.*;
+
+import java.util.List;
+import java.util.logging.Logger;
 
 public class UnmodifiableList {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+    static Employee e1,e2,e3,e5;
     public static void main(String[] args) {
-        Employee e1=new Employee(100,"sunny");
-        Employee e2=new Employee(101, "Bunny");
-        Employee e3=new Employee(102,"Chinny");
+        e1=new Employee(100,"sunny");
+        e2=new Employee(101, "Bunny");
+        e3=new Employee(102,"Chinny");
        // Employee e4=null;
         //List<Employee> emplist=List.of(e1,e2,e3,e4);
         List<Employee> emplist=List.of(e1,e2,e3);
-        System.out.println(emplist);
-        Employee e5=new Employee(103,"Laddu");
+        log.info("{}"+ emplist);
+         e5=new Employee(103,"Laddu");
         //emplist.add(e5); // Unsupported Exception
 
     }

src/main/java/com/nisum/java9Features/FactoryMethodsForUnmodifiableCollections/UnmodifiableMap.java

 package com.nisum.java9Features.FactoryMethodsForUnmodifiableCollections;
 
-import java.sql.*;
-import java.util.*;
+
+
+import java.util.Map;
+import java.util.logging.Logger;
 
 import static java.util.Map.entry;
 
 public class UnmodifiableMap {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+    static Map<String,String> map=Map.of("A","Apple","B","Banana","C","Cat","D","Dog")
+            ,m;
+    static Map.Entry<String,String> e1,e2,e3;
     public static void main(String[] args) {
-        Map<String,String> map=Map.of("A","Apple","B","Banana","C","Cat","D","Dog");
-        System.out.println(map);
+        log.info("{}"+map);
        /* Map<String,String> map1=Map.of("A","Apple","A","Banana","C","Cat","D","Dog");
         System.out.println(map1); // IllegalArgumentException*/
 
         /*Map<String,String> map2=Map.of("A",null,"B","Banana"); // NullPointerException
         System.out.println(map2);*/
 
-        Map.Entry<String,String> e1= entry("A","Apple");
-        Map.Entry<String,String> e2= entry("B","Banana");
-        Map.Entry<String,String> e3= entry("C","Cat");
-        Map<String,String> m=Map.ofEntries(e1,e2,e3);
-        System.out.println(m);
+         e1= entry("A","Apple");
+        e2= entry("B","Banana");
+         e3= entry("C","Cat");
+         m=Map.ofEntries(e1,e2,e3);
+        log.info("{}"+m);
 
        /* Map<String,String> map3=Map.ofEntries(entry(null,"Apple"),entry("B","Banana")); // NullPointerException
         System.out.println(map3);*/

src/main/java/com/nisum/java9Features/FactoryMethodsForUnmodifiableCollections/UnmodifiableSet.java

 package com.nisum.java9Features.FactoryMethodsForUnmodifiableCollections;
 
-import java.util.*;
+
+import java.util.Set;
+import java.util.logging.Logger;
 
 public class UnmodifiableSet {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
+    static Employee e1,e2,e3,e5;
+    static Set<Employee> emplist;
+
     public static void main(String[] args) {
-        Employee e1=new Employee(100,"sunny");
-        Employee e2=new Employee(101, "Bunny");
-        Employee e3=new Employee(102,"Chinny");
+        e1=new Employee(100,"sunny");
+        e2=new Employee(101, "Bunny");
+        e3=new Employee(102,"Chinny");
         // Employee e4=null;
         //List<Employee> emplist=List.of(e1,e2,e3,e4);
-        Set<Employee> emplist=Set.of(e1,e2,e3,e3);
-        System.out.println(emplist);
+        emplist=Set.of(e1,e2,e3,e3);
+        log.info("{} "+ emplist);
         Employee e5=new Employee(103,"Laddu");
         //emplist.add(e5); // Unsupported Exception
 

src/main/java/com/nisum/java9Features/PrivateMethods/Java9Interf.java

 package com.nisum.java9Features.PrivateMethods;
 
+import java.util.logging.Logger;
+
 public interface Java9Interf
 {
+   final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     default void m1()
     {
         m3();
@@ -12,6 +16,6 @@ public interface Java9Interf
     }
     private void m3()
      {
-       System.out.println("common functionality of methods m1 & m2");
+       log.info("common functionality of methods m1 & m2");
      }
 }

src/main/java/com/nisum/java9Features/PrivateMethods/Java9InterfStatic.java

 package com.nisum.java9Features.PrivateMethods;
 
+import java.util.logging.Logger;
+
 public interface Java9InterfStatic {
+     final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     public static void m1()
     {
          m3();
@@ -11,6 +15,6 @@ public interface Java9InterfStatic {
     }
     private static void m3()
     {
-         System.out.println("common functionality of methods m1 & m2");
+         log.info("common functionality of methods m1 & m2");
     }
 }

src/main/java/com/nisum/java9Features/ProcessAPI/CurrentProcessInfo.java

 package com.nisum.java9Features.ProcessAPI;
 
+import java.util.logging.Logger;
+
 public class CurrentProcessInfo {
-        public static void main(String[] args) throws Exception {
-            ProcessHandle p = ProcessHandle.current();
-            ProcessHandle.Info info = p.info();
-            System.out.println("Complete Process Inforamtion:\n" + info);
-            System.out.println("User: " + info.user().get());
-            System.out.println("Command: " + info.command().get());
-            System.out.println("Start Time: " + info.startInstant().get());
-            System.out.println("Total CPU Time Acquired: " + info.totalCpuDuration().get());
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+    static ProcessHandle p;
+    static ProcessHandle.Info info;
+    public static void main(String[] args) throws Exception {
+            p = ProcessHandle.current();
+            info = p.info();
+            log.info("Complete Process Inforamtion:\n" + info);
+            log.info("User: " + info.user().get());
+            log.info("Command: " + info.command().get());
+            log.info("Start Time: " + info.startInstant().get());
+            log.info("Total CPU Time Acquired: " + info.totalCpuDuration().get());
         }
 }

src/main/java/com/nisum/java9Features/ProcessAPI/DestroyProcessFromProcessBuilder.java

 package com.nisum.java9Features.ProcessAPI;
 
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.logging.Logger;
+
+
 public class DestroyProcessFromProcessBuilder {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+    static ProcessBuilder pb;
     public static void main(String[] args) throws Exception {
-        ProcessBuilder pb = new ProcessBuilder("java", "sample");
+        pb= new ProcessBuilder("java", "sample");
         Process p = pb.start();
-        System.out.println("Process Started with id:" + p.pid());
+        log.info("Process Started with id:" + p.pid());
         Thread.sleep(10000);
-        System.out.println("Destroying the process with id:" + p.pid());
+        log.info("Destroying the process with id:" + p.pid());
         p.destroy();
     }
 

src/main/java/com/nisum/java9Features/ProcessAPI/ProcessBasedOnID.java

 package com.nisum.java9Features.ProcessAPI;
 
-import java.util.*;
+
+import java.util.Optional;
+import java.util.logging.Logger;
 
 public class ProcessBasedOnID {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     public static void main(String[] args) throws Exception {
 
         //need to get the pid from task manager
         Optional<ProcessHandle> opt = ProcessHandle.of(8408);
         ProcessHandle p = opt.get();
         ProcessHandle.Info info = p.info();
-        System.out.println("Complete Process Inforamtion:\n" + info);
-        System.out.println("User: " + info.user().get());
-        System.out.println("Command: " + info.command().get());
-        System.out.println("Start Time: " + info.startInstant().get());
-        System.out.println("Total CPU Time Acquired: " + info.totalCpuDuration().get());
+        log.info("Complete Process Inforamtion:\n" + info);
+        log.info("User: " + info.user().get());
+        log.info("Command: " + info.command().get());
+        log.info("Start Time: " + info.startInstant().get());
+        log.info("Total CPU Time Acquired: " + info.totalCpuDuration().get());
     }
 
 }

src/main/java/com/nisum/java9Features/ProcessAPI/ProcessID.java

 package com.nisum.java9Features.ProcessAPI;
 
+import java.util.logging.Logger;
+
 public class ProcessID {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     public static void main(String[] args) throws Exception {
         ProcessHandle p = ProcessHandle.current();
         long pid = p.pid();
-        System.out.println("The PID of current running JVM instance :" + pid);
+        log.info("The PID of current running JVM instance :" + pid);
         Thread.sleep(100000);
     }
 }

src/main/java/com/nisum/java9Features/ReactiveStreams/EmpHelper.java

 package com.nisum.java9Features.ReactiveStreams;
 
-import java.util.*;
+
+import java.util.ArrayList;
+import java.util.List;
 
 public class EmpHelper {
     public static List<Employee> getEmps() {

src/main/java/com/nisum/java9Features/ReactiveStreams/MyReactiveApp.java

 package com.nisum.java9Features.ReactiveStreams;
 
-import java.util.*;
-import java.util.concurrent.*;
+
+import java.util.List;
+import java.util.concurrent.SubmissionPublisher;
+import java.util.logging.Logger;
 
 public class MyReactiveApp {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     public static void main(String args[]) throws InterruptedException {
         // Create Publisher
         SubmissionPublisher<Employee> publisher = new SubmissionPublisher<>();
@@ -15,7 +19,7 @@ public class MyReactiveApp {
         List<Employee> emps = EmpHelper.getEmps();
 
         // Publish items
-        System.out.println("Publishing Items to Subscriber");
+        log.info("Publishing Items to Subscriber");
         emps.stream().forEach(i -> publisher.submit(i));
 
         // logic to wait till processing of all messages are over
@@ -25,7 +29,7 @@ public class MyReactiveApp {
         // close the Publisher
         publisher.close();
 
-        System.out.println("Exiting the app");
+        log.info("Exiting the app");
 
     }
 }

src/main/java/com/nisum/java9Features/ReactiveStreams/MySubscriber.java

 package com.nisum.java9Features.ReactiveStreams;
 
-import java.util.concurrent.*;
+
 import java.util.concurrent.Flow.Subscriber;
 import java.util.concurrent.Flow.Subscription;
+import java.util.logging.Logger;
+
 public class MySubscriber implements Subscriber<Employee> {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     private Subscription subscription;
     private int counter = 0;
 
     @Override
     public void onSubscribe(Subscription subscription) {
-        System.out.println("Subscribed");
+        log.info("Subscribed");
         this.subscription = subscription;
         this.subscription.request(1); //requesting data from publisher
-        System.out.println("onSubscribe requested 1 item");
+        log.info("onSubscribe requested 1 item");
     }
 
     @Override
     public void onNext(Employee item) {
-        System.out.println("Processing Employee " + item);
+        log.info("Processing Employee " + item);
         counter++;
         this.subscription.request(1);
     }
 
     @Override
     public void onError(Throwable e) {
-        System.out.println("Some error happened");
+        log.info("Some error happened");
         e.printStackTrace();
     }
-
     @Override
     public void onComplete() {
-        System.out.println("All Processing Done");
+        log.info("All Processing Done");
     }
 
     public int getCounter() {

src/main/java/com/nisum/java9Features/StreamApi/TestDropWhile.java

 package com.nisum.java9Features.StreamApi;
 
-import java.util.*;
-import java.util.stream.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.logging.Logger;
+import java.util.stream.Collectors;
+
 
 public class TestDropWhile {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     public static void main(String[] args) {
         ArrayList<Integer> l1 = new ArrayList<Integer>();
         l1.add(2);
@@ -13,9 +19,8 @@ public class TestDropWhile {
         l1.add(6);
         l1.add(5);
         l1.add(8);
-        System.out.println("Initial List:" + l1);
+       log.info("Initial List:" + l1);
         List<Integer> l2 = l1.stream().dropWhile(i -> i % 2 == 0).collect(Collectors.toList());
-        System.out.println("After dropWhile:" + l2);
+        log.info("After dropWhile:" + l2);
     }
-
 }

src/main/java/com/nisum/java9Features/StreamApi/TestIterate.java

 package com.nisum.java9Features.StreamApi;
 
-import java.util.stream.*;
+
+import java.util.logging.Logger;
+import java.util.stream.Stream;
 
 public class TestIterate {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     public static void main(String[] args) {
         //Stream.iterate(1, x->x+1).forEach(System.out::println); // return infinite elements
         Stream.iterate(1, x->x+1).limit(5).forEach(System.out::println);
-        System.out.println("3argument iterate");
+        log.info("3argument iterate");
         Stream.iterate(1,x->x<10, x->x+1).forEach(System.out::println);
     }
 }

src/main/java/com/nisum/java9Features/StreamApi/TestOfNullable.java

 package com.nisum.java9Features.StreamApi;
 
-import java.util.*;
-import java.util.stream.*;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.logging.Logger;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 public class TestOfNullable {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     public static void main(String[] args) {
         List<String> l = new ArrayList<String>();
         l.add("A");
@@ -12,12 +20,12 @@ public class TestOfNullable {
         l.add("C");
         l.add("D");
         l.add(null);
-        System.out.println(l);
+        log.info("l {}"+l);
         List<String> l2 = l.stream().filter(o -> o != null).collect(Collectors.toList());
-        System.out.println(l2);
+        log.info("l2 {}"+l2);
 
         List<String> l3 = l.stream().flatMap(o -> Stream.ofNullable(o)).collect(Collectors.toList());
-        System.out.println(l3);
+        log.info("l3 {}"+l3);
 
         Map<String, String> m = new HashMap<>();
         m.put("A", "Apple");
@@ -26,9 +34,9 @@ public class TestOfNullable {
         m.put("D", "Dog");
         m.put("E", null);
         List<String> l4 = m.entrySet().stream().map(e -> e.getKey()).collect(Collectors.toList());
-        System.out.println(l4);
+        log.info("l4 {}"+l4);
 
         List<String> l5 = m.entrySet().stream().flatMap(e -> Stream.ofNullable(e.getValue())).collect(Collectors.toList());
-        System.out.println(l5);
+        log.info("l5 {}"+l5);
     }
 }

src/main/java/com/nisum/java9Features/StreamApi/TestTakeWhile.java

 package com.nisum.java9Features.StreamApi;
 
-import java.util.*;
-import java.util.stream.*;
+import java.util.ArrayList;
+
+import java.util.List;
+
+import java.util.logging.Logger;
+import java.util.stream.Collectors;
+
 
 public class TestTakeWhile {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     public static void main(String[] args) {
+
         ArrayList<Integer> l1 = new ArrayList<Integer>();
         l1.add(2);
         l1.add(4);
@@ -13,10 +21,10 @@ public class TestTakeWhile {
         l1.add(6);
         l1.add(5);
         l1.add(8);
-        System.out.println("Initial List:" + l1);
+        log.info("Initial List:" + l1);
         List<Integer> l2 = l1.stream().filter(i -> i % 2 == 0).collect(Collectors.toList());
-        System.out.println("After Filtering:" + l2);
+        log.info("After Filtering:" + l2);
         List<Integer> l3 = l1.stream().takeWhile(i -> i % 2 == 0).collect(Collectors.toList());
-        System.out.println("After takeWhile:" + l3);
+        log.info("After takeWhile:" + l3);
     }
 }

src/main/java/com/nisum/java9Features/TryWithResourcesEnhancements/MyResources.java

 package com.nisum.java9Features.TryWithResourcesEnhancements;
 
+import java.util.logging.Logger;
+
 public class MyResources implements AutoCloseable {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+
     MyResources()
      {
-        System.out.println("Resource Creation...");
+        log.info("Resource Creation...");
      }
      public void doProcess()
      {
-         System.out.println("Resource Processing...");
+         log.info("Resource Processing...");
      }
      public void close()
      {
-         System.out.println("Resource Closing...");
+         log.info("Resource Closing...");
      }
 
 }

src/main/java/com/nisum/java9Features/TryWithResourcesEnhancements/TryWithResourceApp.java

 package com.nisum.java9Features.TryWithResourcesEnhancements;
 
+import lombok.extern.flogger.Flogger;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.logging.Logger;
+
+//@Slf4j
 public class TryWithResourceApp {
+    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
     public static void preJDK7()
     {
          MyResources r=null;
@@ -11,7 +18,7 @@ public class TryWithResourceApp {
              }
          catch (Exception e)
          {
-             System.out.println("Handling:"+e);
+             log.info("Handling:"+e);
          }
          finally
          {
@@ -24,7 +31,7 @@ public class TryWithResourceApp {
              }
              catch (Exception e)
              {
-                 System.out.println("Handling:"+e);
+                 log.info("Handling:"+e);
              }
          }
     }
@@ -36,7 +43,7 @@ public class TryWithResourceApp {
          }
          catch(Exception e)
          {
-             System.out.println("Handling:"+e);
+             log.info("Handling:"+e);
          }
     }
      public static void JDK9()
@@ -48,7 +55,7 @@ public class TryWithResourceApp {
         }
          catch(Exception e)
          {
-             System.out.println("Handling:"+e);
+             log.info("Handling:"+e);
          }
     }
  public static void multipleJDK9()
@@ -66,21 +73,23 @@ public class TryWithResourceApp {
          }
         catch(Exception e)
         {
-            System.out.println("Handling:"+e);
+            log.info("Handling:"+e);
         }
  }
  public static void main(String[] args)
  {
-         System.out.println("Program Execution With PreJDK7");
-         preJDK7();
 
-         System.out.println("Program Execution With JDK7");
-         JDK7();
+    log.info("Program Execution With PreJDK7");
+
+    preJDK7();
+
+    log.info("Program Execution With JDK7");
+    JDK7();
 
-         System.out.println("Program Execution With JDK9");
-         JDK9();
+    log.info("Program Execution With JDK9");
+    JDK9();
 
-         System.out.println("Program Execution Multiple Resources With JDK9");
-         multipleJDK9();
+    log.info("Program Execution Multiple Resources With JDK9");
+    multipleJDK9();
          }
  }

src/main/java/com/nisum/java9Features/http2/TestAsync.java

-package com.nisum.java9Features.http2;
-
-import com.nisum.java9Features.DiamondOperator.*;
-
-import java.net.*;
-import java.net.http.*;
-import java.util.*;
-import java.util.concurrent.*;
-
-public class TestAsync {
-        public static void main(String[] args) throws Exception {
-                String url = "https://www.redbus.in/info/aboutus";
-                sendGetAsyncRequest(url);
-        }
-
-        public static void sendGetAsyncRequest(String url) throws Exception {
-                HttpClient client = HttpClient.newHttpClient();
-                HttpRequest req = HttpRequest.newBuilder(new URI(url)).GET().build();
-                System.out.println("Sending Asynchronous Request...");
-                CompletableFuture<HttpResponse<String>> cf = client.sendAsync(req, HttpResponse.BodyHandlers.ofString());
-                int count = 0;
-                while (!cf.isDone()) {
-                        System.out.println("Processing not done and doing other activity:" + ++count);
-                }
-                processResponse(cf.get());
-        }
-
-        public static void processResponse(HttpResponse resp) {
-                System.out.println("Status Code:" + resp.statusCode());
-                //System.out.println("Response Body:"+resp.body());
-                HttpHeaders header = resp.headers();
-                Map<String, List<String>> map = header.map();
-                System.out.println("Response Headers");
-                map.forEach((k, v) -> System.out.println("\t" + k + ":" + v));
-        }
-
-}
+//package com.nisum.java9Features.http2;
+//
+//import jdk.incubator.http.HttpClient;
+//import jdk.incubator.http.HttpHeaders;
+//import jdk.incubator.http.HttpRequest;
+//import jdk.incubator.http.HttpResponse;
+//
+//import java.net.URI;
+//import java.util.List;
+//import java.util.Map;
+//import java.util.concurrent.CompletableFuture;
+//import java.util.logging.Logger;
+//
+//
+//public class TestAsync {
+//        private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+//
+//        public static void main(String[] args) throws Exception {
+//                String url = "https://www.redbus.in/info/aboutus";
+//                sendGetAsyncRequest(url);
+//        }
+//
+//        public static void sendGetAsyncRequest(String url) throws Exception {
+//                HttpClient client = HttpClient.newHttpClient();
+//                HttpRequest req = HttpRequest.newBuilder(new URI(url)).GET().build();
+//                log.info("Sending Asynchronous Request...");
+//                CompletableFuture<HttpResponse<String>> cf = client.sendAsync(req, HttpResponse.BodyHandler.asString());
+//                int count = 0;
+//                while (!cf.isDone()) {
+//                        log.info("Processing not done and doing other activity:" + ++count);
+//                }
+//                processResponse(cf.get());
+//        }
+//
+//        public static void processResponse(HttpResponse resp) {
+//               log.info("Status Code:" + resp.statusCode());
+//                //System.out.println("Response Body:"+resp.body());
+//                HttpHeaders header = resp.headers();
+//                Map<String, List<String>> map = header.map();
+//                log.info("Response Headers");
+//                map.forEach((k, v) -> System.out.println("\t" + k + ":" + v));
+//        }
+//
+//}

src/main/java/com/nisum/java9Features/http2/TestSync.java

-package com.nisum.java9Features.http2;
-
-
-import java.net.*;
-import java.net.http.*;
-import java.nio.file.*;
-import java.util.*;
-
-public class TestSync {
-    public static void main(String[] args) throws Exception {
-        String url = "https://www.redbus.in/info/aboutus";
-        sendGetSyncRequest(url);
-    }
-
-    public static void sendGetSyncRequest(String url) throws Exception {
-        HttpClient client = HttpClient.newHttpClient();
-        HttpRequest req = HttpRequest.newBuilder(new URI(url)).GET().build();
-        HttpResponse resp = client.send(req, HttpResponse.BodyHandlers.ofString());
-      //  HttpResponse resp1=client.send(req,HttpResponse.BodyHandlers.ofFile(Paths.get("abc.html"))     );
-        processResponse(resp);
-    }
-
-    public static void processResponse(HttpResponse resp) {
-        System.out.println("Status Code:" + resp.statusCode());
-        //System.out.println("Response Body:" + resp.body());
-        HttpHeaders header = resp.headers();
-        Map<String, List<String>> map = header.map();
-        System.out.println("Response Headers");
-        map.forEach((k, v) -> System.out.println("\t" + k + ":" + v));
-    }
-
-}
+//package com.nisum.java9Features.http2;
+//
+//
+//import jdk.incubator.http.HttpClient;
+//import jdk.incubator.http.HttpHeaders;
+//import jdk.incubator.http.HttpRequest;
+//import jdk.incubator.http.HttpResponse;
+//
+//import java.net.URI;
+//import java.util.List;
+//import java.util.Map;
+//import java.util.concurrent.CompletableFuture;
+//import java.util.logging.Logger;
+//
+//public class TestSync {
+//    private final static Logger log =Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+//    public static void main(String[] args) throws Exception {
+//        String url = "https://www.redbus.in/info/aboutus";
+//        sendGetSyncRequest(url);
+//    }
+//
+//    public static void sendGetSyncRequest(String url) throws Exception {
+//        HttpClient client = HttpClient.newHttpClient();
+//        HttpRequest req = HttpRequest.newBuilder(new URI(url)).GET().build();
+//        HttpResponse resp = client.send(req, HttpResponse.BodyHandler.asString());
+//      //  HttpResponse resp1=client.send(req,HttpResponse.BodyHandlers.ofFile(Paths.get("abc.html"))     );
+//        processResponse(resp);
+//    }
+//
+//    public static void processResponse(HttpResponse resp) {
+//        log.info("Status Code: {}" + resp.statusCode());
+//        //System.out.println("Response Body:" + resp.body());
\ No newline at end of file
+//        HttpHeaders header = resp.headers();
+//        Map<String, List<String>> map = header.map();
+//        log.info("Response Headers");
+//        map.forEach((k, v) -> log.info("\t" + k + ":" + v));
+//    }
+//
+//}
\ No newline at end of file