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  1. interface IFace {
  2.     String f(String arg);
  3. }
  4.  
  5. public class Main implements IFace {
  6.     @Override
  7.     public String f(Object arg) {
  8.         return "--" + arg;
  9.     }
  10. }
Compilation error #stdin compilation error #stdout 0s 0KB
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Standard input is empty
compilation info 
Main.java:5: error: Main is not abstract and does not override abstract method f(String) in IFace
public class Main implements IFace {
       ^
Main.java:6: error: method does not override or implement a method from a supertype
    @Override
    ^
2 errors
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Standard output is empty
https://ideone.com/xTl9Uw
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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