import java.io.*;
 
public class GestionExceptions {
  void throwRuntimeException(int type) {
    try {
      switch(type) {
        case 0: throw new FileNotFoundException();
        case 1: throw new IOException();
        case 2: throw new RuntimeException();
        default: return;
      }
    } catch(Exception e) {
      throw new RuntimeException(e);
    }
  }
}
 
class MesExceptions extends Exception {
 
  public static void main(String[] args) {
 
    GestionExceptions gexec = new GestionExceptions();
 
    gexec.throwRuntimeException(3);
 
    for(int i = 0; i < 4; i++)
      try {
        if(i < 3)
          gexec.throwRuntimeException(i);
        else
          throw new MesExceptions();
      } catch(MesExceptions e) {
          System.out.println("Mes Exceptions: " + e);
      } catch(RuntimeException re) {
        try {
          throw re.getCause();
        } catch(FileNotFoundException e) {
          System.out.println(
            "FileNotFoundException: " + e);
        } catch(IOException e) {
          System.out.println("IOException: " + e);
        } catch(Throwable e) {
          System.out.println("Throwable: " + e);
        }
      }
}
}