int x;

int y;

public void op1(String x);

}

public int x;

public int y;

public default void op1() {

System.out.println(x+y);

}

}

int x=10;

int y=20;

public static void op1() {

System.out.println(x+y);

}

}

public static int x=10;

public static int y=20;

public static void op1() {

x++;

y++;

System.out.println(x+y);

}

}

static int x=20;

public int y=20;

static void op1() {

System.out.println(x+y);

}

}