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Author: disha2sinha

Diff for: synchronization.java

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+
+// A Java program to demonstrate working of 
+// synchronized. 
+import java.io.*;
+import java.util.*;
+
+// A Class used to send a message 
+class Sender {
+    public void send(String msg) {
+        System.out.println("Sending\t" + msg);
+        try {
+            Thread.sleep(1000);
+        } catch (Exception e) {
+            System.out.println("Thread  interrupted.");
+        }
+        System.out.println("\n" + msg + "Sent");
+    }
+}
+
+// Class for send a message using Threads
+class ThreadedSend extends Thread {
+    private String msg;
+    Sender sender;
+
+    // Recieves a message object and a string
+    // message to be sent
+    ThreadedSend(String m, Sender obj) {
+        msg = m;
+        sender = obj;
+    }
+
+    public void run() {
+        // Only one thread can send a message
+        // at a time.
+        synchronized (sender) {
+            // synchronizing the snd object
+            sender.send(msg);
+        }
+    }
+}
+
+// Driver class
+class synchronization {
+    public static void main(String args[]) {
+        Sender snd = new Sender();
+        ThreadedSend S1 = new ThreadedSend(" Hi ", snd);
+        ThreadedSend S2 = new ThreadedSend(" Bye ", snd);
+
+        // Start two threads of ThreadedSend type
+        S1.start();
+        S2.start();
+
+        // wait for threads to end
+        try {
+            S1.join();
+            S2.join();
+        } catch (Exception e) {
+            System.out.println("Interrupted");
+        }
+    }
+}