What is the output for the following codes?

1)

public class New{

public static void main (String[ ] args) {

int var = 50;

System.out.println (var = + var);

}

public static int fun( ){

System.out.println (var = + var);

}

}

2)

public class New{

public static void main (String[ ] args) {

int var = 10;

{

int var = 20;

System.out.println (var = + var);

}

System.out.println (var = + var);

}

}

3)

public class New{

public static void fun ( );

int var = 10;

public static void main (String[ ] args) {

int var = 3;

System.out.println (var = + var);

fun( );

}

int fun ( ) {

System.out.println (var = + var);

}

}