JAVA

void method java

public class Y{
   public static void main(String args[]){
       X foo = new X();
       foo.setSubtotal();
   }
}

public class X{
public void setSubtotal ()
 {
   subtotal = Validator.getDouble(sc,"Enter subtotal:", 0, 10000);    

 }
}

void method java

int a = 20;
int b = 20;
public static void sum(){ // Void Method
  System.out.println(a + b);
}
public static int sum(){ // Return Function
  return a + b;
}