class Class7 {

static int a = 1;

private static int b = 2;

private int c;

private void x() {

System.out.println('x');

}

private void y() {

System.out.println(a);

}

private void empty() {

}

private void z(int a) {

System.out.println(a);

}

public static void main(String[] args) {

System.out.println(a);

System.out.println(b);

Class7 c = new Class7();

c.x();

c.y();

c.z(3);

}

}