Added 5th and 6th program

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();
+	}
+}