program in java

    /*1.  WAP that create interface on that you declare one method interest(p,r,n) then create two class  simple and compound that implements interest and find simple and compound interest. */ interface k1     {      void p();     } interface k2    {      void r();    }     interface k3    {      void n();    }   class Simple implements  k1,k2 {     public void p() { System.out.println("1 st");} public void r()  {System.out.println("2nd");} } class Compound implements  k3 {     public void n()  {   System.out.println(" 3rd");   } } class Kk    {     public static void main(String  []args)         {            Simple  s=new Simple(); ...

/*2.  WAP a program that illustrates interface inheritance. Create two interface p1 and p2 . create Interface p  which extends p1 and p2 and then create interface p12 which extends p12. Each interface declare one constants and one method. Create class Q which implements p12 and define all the methods of interface which displays value of constants*/ interface p1    {        int a=10;       void A();    }   interface p2    {        int b=12;       void B();    }  interface p12 extends p1,p2    {        int c=44;       void C();    }       class   Q implements p12     {       public void A()    {  System.out.println("what is your number"+ a);}   public  void B()    {  System.out.println("what i...