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  1. import java.io.*;
  2.  
  3. class A{
  4.   public static void main(String[] args){
  5.     try{
  6.       f();
  7.       if(false){throw(IOException)null;}
  8.     }
  9.     catch(IOException e){e.printStackTrace();}
  10.   }
  11.   static void f(){
  12.     g();
  13.   }
  14.   static void g(){
  15.     Thrower.throw2(new IOException("io"));
  16.   }
  17. }
  18.  
  19. class Thrower{
  20.   private static ThreadLocal<Exception> tl = new ThreadLocal<Exception>();
  21.   private Thrower()throws Exception{
  22.     Exception e = tl.get();
  23.     tl.remove();
  24.     throw e;
  25.   }
  26.   public static void throw2(Exception ex){
  27.     if(ex==null){throw new IllegalArgumentException("ex==null");}
  28.     if(ex instanceof RuntimeException){throw (RuntimeException)ex;}
  29.     try{
  30.       tl.set(ex);
  31.       Thrower.class.newInstance();
  32.     }
  33.     catch(IllegalAccessException e){throw new RuntimeException(e);}
  34.     catch(InstantiationException e){throw new RuntimeException(e);}
  35.   }
  36. }
  37.  
Success #stdin #stdout 0.03s 245632KB
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https://ideone.com/MdolI
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
secret

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