Question

In JAVA: For this question, you need to create two interface programs in a package and import them to the class where you implement the methods. You can create a new package in your assignment4 project (or package) to contain the two interface programs. One of the interface program has two methods ( countOne(), countTwo() ) and the other interface program has only one method (countThree ( ) ). In a separate package, write a class to implement the two interfaces. Create a test class (the one with the main( ) ) to invoke the three methods to display the following:

ONE

TWO

THREE

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Interface1.java :

//package
package InterfacePackage;
//Interface
public interface Interface1 {
//methods
   void countOne();
   void countTwo();
}
****************************

Interface2.java :

//package
package InterfacePackage;
//Interface
public interface Interface2 {
//method
   void countThree();
}
******************************

InterfaceDemo.java :

//package
package ClassPackage;

//Java class
public class InterfaceDemo implements InterfacePackage.Interface1, InterfacePackage.Interface2 {

   @Override
   public void countThree() {
       // print message
       System.out.println("THREE");

   }

   @Override
   public void countOne() {
       // print message
       System.out.println("ONE");

   }

   @Override
   public void countTwo() {
       // print message
       System.out.println("TWO");

   }

}
********************************

InterfaceTest.java :

package ClassPackage;//package
//Java class
public class InterfaceTest {
//entry point of program ,main method
   public static void main(String[] args) {
       //Creating object of InterfaceDemo class
       InterfaceDemo id=new InterfaceDemo();
       //call method with object id
       id.countOne();
       id.countTwo();
       id.countThree();
   }

}

======================================================

Output : Compile and Run InterfaceTest.java to get the screen as shown below

Screen 1 :InterfaceTest.java

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.