Java interview questions Part20

Given the following,

1. interface Base {
2. boolean m1 ();
3. byte m2(short s);
4. }

Which code fragments will compile? (Choose all that apply.)

interface Base2 implements Base { }

abstract class Class2 extends Base {

public boolean ml() { return true; } }

abstract class Class2 implements Base { }

abstract class Class2. implements Base {

public boolean m1() { return (true); } }

class Class2 implements Base {

boolean m1( ) { return false; }