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Compile time erroe in the code.  RSS feed

 
Ranch Hand
Posts: 165
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Why is compile output i get as below?





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).
 
Bartender
Posts: 1952
7
Eclipse IDE Java
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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 ]
 
Ranch Hand
Posts: 179
Chrome Eclipse IDE Mac
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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.
 
It is sorta covered in the JavaRanch Style Guide.
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