package interfaceExamples; interface Aaa { int methodA(); } interface Bbb { int methodB(); } interface Ccc { int methodC(); } interface Ddd{ } class D implements Aaa, Bbb, Ccc, Ddd { int i = 999 + 111; public int methodA() { i = +i / i; return i; } public int methodB() { i = -i * i; return i; } public int methodC() { i = ++i - --i; return i; } } public class practice4 { public static void main(String[] args) { D d = new D(); System.out.println(d.i); System.out.println(d.methodA()); System.out.println(d.methodB()); System.out.println(d.methodC()); } }