1A and 1B

ThreadExample1.java

@@ -0,0 +1,13 @@
+public class ThreadExample1 extends Thread {
+    public void run(){
+        int a = 10;
+        int b = 12;
+        int result = a + b;
+        System.out.println("Thread started running..");
+        System.out.println("Sum of two numbers is: " + result);
+    }
+    public static void main(String[] args) {
+        ThreadExample1 t1 = new ThreadExample1();
+        t1.start();
+    }
+}