class Int {
	int val;
 
	Int(int val) {
		this.val = val;
	}
}
interface Eq {
	public boolean check(Object a, Object b);	
}
 
class Outer {
	Eq foo(Int x) {
		x.val = 1;
		return new Eq() {
			public boolean check(Object a, Object b) {
				if(x.val == 0) {
					return a.equals(b);
				}
				return !a.equals(b);
			}
		};
	}
 
	public static void main(String args[]) {
		Outer out = new Outer();
		Int x = new Int(0);
		Eq e = out.foo(x);
		System.out.println(e.check(1, 1));
	}
}

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