// interfaces/InterfaceCollision.java

// (c)2021 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

interface I1 {

void f();

}

interface I2 {

int f(int i);

}

interface I3 {

int f();

}

class C {

public int f() {

return 1;

}

}

class C2 implements I1, I2 {

@Override

public void f() {

}

@Override

public int f(int i) {

return 1;

} // Overloaded

}

class C3 extends C implements I2 {

@Override

public int f(int i) {

return 1;

} // Overloaded

}

class C4 extends C implements I3 {

// Identical, no problem:

@Override

public int f() {

return 1;

}

}

// Methods differ only by return type:

//- class C5 extends C implements I1 {}

//- interface I4 extends I1, I3 {}