public static void main(String args[]) {
functionOne(); // call function without parameters
int x = 3;
int y = 9;
int z;
z = addtwonumbers(x, y); // x and y are pass by value
System.out.println(x);
System.out.println(y);
IntClass a = new IntClass(); // Reference through instances
IntClass b = new IntClass(); // of classes
a.setNum(3);
b.setNum(9);
addtwonumbers(a, b); // a and b are pass by reference
System.out.println(a.getNum() + b.getNum());
}
public static void addtwonumbers(IntClass x, IntClass y) {
x.addtoNum(100);
y.addtoNum(200);
}