Java Threads and Runnables

Rajeev Kumar Singh · Rajeev Kumar Singh · commit 62e97c274257 · 2017-05-09T14:33:26.000+05:30
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,4 @@
+.DS_Store
+.idea
+out
+*.iml
diff --git a/README.md b/README.md
@@ -0,0 +1 @@
+# Java Concurrency/Multithreading Examples
diff --git a/java-threads-and-runnables/src/RunnableExample.java b/java-threads-and-runnables/src/RunnableExample.java
@@ -0,0 +1,22 @@
+
+
+public class RunnableExample implements Runnable {
+
+    public static void main(String[] args) {
+        System.out.println("Inside : " + Thread.currentThread().getName());
+
+        System.out.println("Creating Runnable...");
+        Runnable runnable = new RunnableExample();
+
+        System.out.println("Creating Thread...");
+        Thread thread = new Thread(runnable);
+
+        System.out.println("Starting Thread...");
+        thread.start();
+    }
+
+    @Override
+    public void run() {
+        System.out.println("Inside : " + Thread.currentThread().getName());
+    }
+}
diff --git a/java-threads-and-runnables/src/RunnableExampleAnonymousClass.java b/java-threads-and-runnables/src/RunnableExampleAnonymousClass.java
@@ -0,0 +1,24 @@
+/**
+ * Created by rajeevkumarsingh on 08/05/17.
+ */
+public class RunnableExampleAnonymousClass {
+
+    public static void main(String[] args) {
+        System.out.println("Inside : " + Thread.currentThread().getName());
+
+        System.out.println("Creating Runnable...");
+
+        Runnable runnable = new Runnable() {
+            @Override
+            public void run() {
+                System.out.println("Inside : " + Thread.currentThread().getName());
+            }
+        };
+
+        System.out.println("Creating Thread...");
+        Thread thread = new Thread(runnable);
+
+        System.out.println("Starting Thread...");
+        thread.start();
+    }
+}
diff --git a/java-threads-and-runnables/src/RunnableExampleLambdaExpression.java b/java-threads-and-runnables/src/RunnableExampleLambdaExpression.java
@@ -0,0 +1,21 @@
+/**
+ * Created by rajeevkumarsingh on 08/05/17.
+ */
+public class RunnableExampleLambdaExpression {
+
+    public static void main(String[] args) {
+        System.out.println("Inside : " + Thread.currentThread().getName());
+
+        System.out.println("Creating Runnable...");
+        Runnable runnable = () -> {
+            System.out.println("Inside : " + Thread.currentThread().getName());
+        };
+
+        System.out.println("Creating Thread...");
+        Thread thread = new Thread(runnable);
+
+        System.out.println("Starting Thread...");
+        thread.start();
+
+    }
+}
diff --git a/java-threads-and-runnables/src/ThreadExample.java b/java-threads-and-runnables/src/ThreadExample.java
@@ -0,0 +1,20 @@
+/**
+ * Created by rajeevkumarsingh on 08/05/17.
+ */
+public class ThreadExample extends Thread {
+
+    @Override
+    public void run() {
+        System.out.println("Inside : " + Thread.currentThread().getName());
+    }
+
+    public static void main(String[] args) {
+        System.out.println("Inside : " + Thread.currentThread().getName());
+
+        System.out.println("Creating thread...");
+        Thread thread = new ThreadExample();
+
+        System.out.println("Starting thread...");
+        thread.start();
+    }
+}
diff --git a/java-threads-and-runnables/src/ThreadJoinExample.java b/java-threads-and-runnables/src/ThreadJoinExample.java
@@ -0,0 +1,42 @@
+/**
+ * Created by rajeevkumarsingh on 08/05/17.
+ */
+
+public class ThreadJoinExample {
+    public static void main(String[] args) {
+        // Create Thread 1
+        Thread thread1 = new Thread(() -> {
+            System.out.println("Entered Thread 1");
+            try {
+                Thread.sleep(2000);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+            System.out.println("Exiting Thread 1");
+        });
+
+        // Create Thread 2
+        Thread thread2 = new Thread(() -> {
+            System.out.println("Entered Thread 2");
+            try {
+                Thread.sleep(4000);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+            System.out.println("Exiting Thread 2");
+        });
+
+        System.out.println("Starting Thread 1");
+        thread1.start();
+
+        System.out.println("Waiting for Thread 1 to complete");
+        try {
+            thread1.join(1000);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        System.out.println("Waited enough! Starting Thread 2 now");
+        thread2.start();
+    }
+}
diff --git a/java-threads-and-runnables/src/ThreadSleepExample.java b/java-threads-and-runnables/src/ThreadSleepExample.java
@@ -0,0 +1,34 @@
+/**
+ * Created by rajeevkumarsingh on 08/05/17.
+ */
+public class ThreadSleepExample {
+
+    public static void main(String[] args) {
+        System.out.println("Inside : " + Thread.currentThread().getName());
+
+        String[] messages = {"If I can stop one heart from breaking,",
+                "I shall not live in vain.",
+                "If I can ease one life the aching,",
+                "Or cool one pain,",
+                "Or help one fainting robin",
+                "Unto his nest again,",
+                "I shall not live in vain"};
+
+        Runnable runnable = () -> {
+            System.out.println("Inside : " + Thread.currentThread().getName());
+
+            for(String message: messages) {
+                System.out.println(message);
+                try {
+                    Thread.sleep(2000);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }
+        };
+
+        Thread thread = new Thread(runnable);
+
+        thread.start();
+    }
+}

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+Diff line change
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 +.DS_Store
 +.idea
 +out
 +*.iml
Original file line number	Diff line number	Diff line change
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	`1`	`+# Java Concurrency/Multithreading Examples`