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  1. /* package whatever; // don't place package name! */
  2.  
  3. interface MyInterface
  4. {
  5.    void show();
  6.    void set();   
  7.    void just();
  8. }
  9.  
  10. class MyClass implements MyInterface
  11. {            
  12.    public void set(){}
  13.    public void just(){}
  14. }
Compilation error #stdin compilation error #stdout 0s 0KB
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Standard input is empty
compilation info 
Main.java:10: error: MyClass is not abstract and does not override abstract method show() in MyInterface
class MyClass implements MyInterface
^
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Standard output is empty
https://ideone.com/ZGg6Ac
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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