Create a Java class with 3 methods derived from an interface such as basic example below. Have your methods perform some sort of function. Try to have your methods use an argument (example int intNum) .

Have one method throw an exception.

interface Inf1{ public void method1(); } interface Inf2 extends Inf1 { public void method2(); } public class Demo implements Inf2{ /* Even though this class is only implementing the * interface Inf2, it has to implement all the methods * of Inf1 as well because the interface Inf2 extends Inf1 */ public void method1(){ System.out.println("method1"); } public void method2(){ System.out.println("method2"); } public static void main(String args[]){ Inf2 obj = new Demo(); obj.method2(); } }