fork download 
  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		try { test_1(null); }
  10.         catch (NullPointerException e) { System.out.println("NullPointerException"); }
  11.  
  12.         try { test_2(null); }
  13.         catch (UnsupportedArgumentException e) { System.out.println(e.getMessage()); }
  14.  
  15.         try { test_1(Color.Green); }
  16.         catch (UnsupportedArgumentException e) { System.out.println(e.getMessage()); }
  17. 	}
  18.  
  19.       public static String test_1 (Color color) throws Exception
  20.       {
  21.         String out = "";
  22.  
  23.         switch (color) // NullPointerException expected
  24.         {
  25.           case Red:
  26.             out = Color.Red.getName();
  27.             break;
  28.           case Blue:
  29.             out = Color.Red.getName();
  30.             break;
  31.           default:
  32.             throw new UnsupportedArgumentException ("unsupported color: " + color.getName());
  33.         }
  34.  
  35.         return out;
  36.       }
  37.  
  38. 	public static String test_2 (Color color) throws Exception
  39. 	{
  40. 	  if (color == null) throw new UnsupportedArgumentException ("unsupported color: NULL");
  41. 	  return test_1(color);
  42. 	}
  43. }
  44.  
  45.     enum Color
  46.     {
  47.       Red("Red"), Blue("Blue"), Green("Green");
  48.       private final String name;
  49.       private Color(String n) { name = n; }
  50.       public String getName() { return name; }
  51.     }
  52.  
  53.  
  54.     class UnsupportedArgumentException extends Exception
  55.     {
  56.       private String message = null;
  57.  
  58.       public UnsupportedArgumentException() { super(); }
  59.  
  60.       public UnsupportedArgumentException (String message)
  61.       {
  62.         super(message);
  63.         this.message = message;
  64.       }
  65.  
  66.       public UnsupportedArgumentException (Throwable cause) { super(cause); }
  67.  
  68.       @Override public String toString() { return message; }
  69.  
  70.       @Override public String getMessage() { return message; }
  71.     }
  72.  
Success #stdin #stdout 0.12s 320576KB
comments (?)
stdin 
Standard input is empty
stdout 
NullPointerException
unsupported color: NULL
unsupported color: Green
https://ideone.com/eVeqPd
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!