###@###.### 2003-11-20

J2SE Version (please include all output from java -version flag):

 java version "1.5.0-beta"
 Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b28)
 Java HotSpot(TM) Client VM (build 1.5.0-beta-b28, mixed mode)

Does this problem occur on J2SE 1.4 or 1.4.1 or 1.4.2?  Yes / No (pick one)

 No

Operating System Configuration Information (be specific):

 Windows XP


Bug Description:

 Creating a socket with a Japanese host name throws not 
 UnknownHostException but IllegalArgumentException.


Steps to Reproduce (be specific):

The following is the sample program to reproduce the problem. Just compile and run it:

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

class SocketTest {
    public static void main(String[] args) {
        try {
            Socket s = new Socket("\u67f4\u7530\u82b3\u6a39", 8000);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}