Interfaces

two interfaces having same method names and these two interfaces are implemented by a single class. so now i would like to generate different code of same methods of different interfaces.
eg:
----
interface i1
{
void method1();
}


interface i2
{
void method1();
}

public class Imple1 implements i1,i2
{
.... // now here i want to generate different code for method1() of i1 and method1() of i2
}