43.interface3

 //Effect of multiple inheritance using interface

interface student

{

int no = 7;

String name = "milan";

}

class mark 

{

int m1, m2, m3;

}

class child extends mark implements student

{

int total;

float per;

}

class intf3

{

public static void main(String[] args) {

child obj = new child();

obj.m1 = 80;

obj.m2 = 88;

obj.m3 = 89;

obj.total = obj.m1 + obj.m2 + obj.m3;

obj.per = obj.total/3.0f;

System.out.println("Student Roll No : " + obj.no);

System.out.println("Student Name : " + obj.name);

System.out.println("Mark1 : " + obj.m1);

System.out.println("Mark2 : " + obj.m2);

System.out.println("Mark3 : " + obj.m3);

System.out.println("Total : " + obj.total);

System.out.println("Persentage  : " + obj.per);

}

}

OUTPUT:

Student Roll No : 7

Student Name : milan

Mark1 : 80

Mark2 : 88

Mark3 : 89

Total : 257

Persentage  : 85.666664