Added 5th and 6th program

MultipleThread.java

@@ -0,0 +1,30 @@
+public class MultipleThread implements Runnable {
+	String task;
+	MultipleThread(String task){
+		this.task = task;
+	}
+	public void run(){
+		for(int i = 0; i<= 5; i++){
+			System.out.println(task+ ":" + i);
+			try {
+				Thread.sleep(400);
+			} catch (InterruptedException e) {
+				e.printStackTrace();
+			}
+		}
+	}
+	public static void main(String[] args){
+		Thread nThread = Thread.currentThread();
+		System.out.println("Name of thread : "+  nThread);
+			
+		MultipleThread mt = new MultipleThread("hello");
+		Thread t1 = new Thread(mt);
+		Thread t2 = new Thread(mt);	
+		Thread t3 = new Thread(mt);
+		t1.start();
+		t2.start();
+		t3.start();
+		int count = Thread.activeCount();
+		System.out.println("No. of active threads: " +count);
+	}
+}	

Sync6.java

@@ -0,0 +1,43 @@
+// 6. write a java program for demonstrating Thread Synchronization
+class Table {
+	synchronized void printTable(int n){
+		for(int i = 1; i<= 5; i++){
+			System.out.println(n * i);
+			try {
+				Thread.sleep(200);
+			} catch (Exception e) {
+				System.out.println(e);
+			}	
+		}
+	}
+}
+
+class Thread1 extends Thread {
+	Table t;
+	Thread1 (Table t){
+		this.t = t;
+	}
+	public void run(){
+		t.printTable(5);
+	}
+}
+
+class Thread2 extends Thread {
+	Table t;
+	Thread2(Table t){
+		this.t = t;
+	}
+	public void run(){
+		t.printTable(100);
+	}
+}
+
+public class Sync6 {
+	public static void main(String args[]){
+		Table obj = new Table();
+		Thread1 t1 = new Thread1(obj);
+		Thread2 t2 = new Thread2(obj);
+		t1.start();
+		t2.start();
+	}
+}

src/Title.txt

@@ -1,4 +1,5 @@
 1. write a java code by extending thread class (2)
 2. write a java code by implementing runnable interface. (2)
 3. write a java code for demonstrating thread priority
-4. write a java code for two threads performing two tasks at a time
+4. write a java code for two threads performing two tasks at a time
+5. write a java program for multiple thread acting on single object