Re: what the problem about this short code?

Jussi Piitulainen <>
14 Apr 2007 13:37:47 +0300
dolphin writes:


import java.lang.String;

public class Player1 {
    MediaPlayer mp1 = new MediaPlayer();
    public Player1(){
    mp1.setMediaLocation(new String("file:\\d:\\music\\11.wma"));
    public static void main(String[] args){
        Player1 player1=new Player1();

it says that Cannot find a Player for :file:\d:\music\11.wma.what
the problem?

I don't know about media players, but I have a couple of suggestions.

First, importing any java.lang.* class is redundant in a bad way: it
doesn't affect the meaning of the program, but it leaves a reader of
the code looking for an explanation.

Second, never write

 new String("foo")

for any literal "foo". Instead, write just


and it will be a perfectly adequate String. Or if you are trying to
appear paranoid, consider something like this:

 (String)new String(new String((String)((String)"foo").toString()))

Well, just don't.

Third, and this may actually help you, you can write an even simpler
test program and so eliminate some possibilities of error:


public class Player1 {
  public static void main(String[] args) {
     MediaPlayer mp1 = new MediaPlayer();

Oh, and please, include the actual error message. Cut and paste, or
otherwise copy it _exactly_. Any paraphrase is likely to distort it
when you don't already know what the message means.

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