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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class A{  
  9. void msg(){System.out.println("Hello java");}  
  10. }  
  11.  
  12. public class Simple extends A{  
  13. void msg(){System.out.println("Hello java");}//C.T.Error  
  14.  public static void main(String args[]){  
  15.    Simple obj=new Simple();  
  16.    obj.msg();  
  17.    }  
  18. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:12: error: class Simple is public, should be declared in a file named Simple.java
public class Simple extends A{  
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/JmmRKa
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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