Compile time erroe in the code.

[Phillipe Rodrigues]

Why is compile output i get as below?

  
public class  Super_class
{
public static void return_Number(){
System.out.println(5);
}
}
 

  
public class  Sub_class
{
public static void return_Number(){
System.out.println(10);
}
public static void main(String[] args) 
{
System.out.println(Sub_class.return_Number());
System.out.println(Super_class.return_Number());
}
}

Output:
---------- Compile ----------
Sub_class.java:8: 'void' type not allowed here
System.out.println(Sub_class.return_Number());
^
Sub_class.java:9: 'void' type not allowed here
System.out.println(Super_class.return_Number());
^
2 errors
Normal Termination
Output completed (0 sec consumed).

[Jelle Klap]

You're calling PrintStream's println() method and passing in the return value of the return_Number() method. However, the return type of the return_Number() method is void, which is why it's not valid to pass the result of this method as an argument to the println() method - the return_Number() method doesn't yield a return value.
[ October 07, 2008: Message edited by: Jelle Klap ]

[Ravikanth kolli]

The return type of both the methods that are called in the println statement are void, So it doesnot return anything and thus the error.