Re: String compare

[Adam Taft]

You're not comparing strings with the == (equality) operator, are you??
You'll always get false this way since you're comparing two different 
string objects (with the same string value).

Try, the equals() method on your strings.  Ie.

System.out.println(mediaData.getMediaName().equals(name));


Indra Syafruddin wrote:
I tried to compare two String, one comes from parameter that is sent via 
xmlrpc, one comes from arraylist data.

Both String have exactly same data. But why the comparation value return 
false??

import java.util.*;

public class ListMedia {

 private MediaData mediaData;

 private MediaData[] listData;

 private List list = new ArrayList();

 public ListMedia() {
  this.createMediaList();
  mediaData = getMediaData("test.avi");
  System.out.println(mediaData.getMediaName());
 }

 private void createMediaList() {
  mediaData = new MediaData("Nyoba.avi", "c:/fans/Nyoba.avi", "video",
    "audio");
  list.add(mediaData);

  mediaData = new MediaData("test.avi", "c:/fans/test.avi", "videoTest",
    "audioTest");
  list.add(mediaData);

  mediaData = new MediaData("testjuga.avi", "c:/fans/test.avi",
    "videoTest", "audioTest");
  list.add(mediaData);
 }

 public void addMediaList(String name, String url, String video, String 
audio) {
  mediaData = new MediaData(name, url, video, audio);
  list.add(mediaData);
 }

 public void removeMediaList(Iterator i) {
  i.remove();
 }

 public MediaData getMediaData(String name) {
  System.out.println("name = " + name);
  ListIterator i = list.listIterator();
  for (int no = 0; i.hasNext();) {
   mediaData = (MediaData) i.next();
   System.out.println(mediaData.getMediaName() + " = " + name);
   System.out.println(mediaData.getMediaName() == name);
   if (mediaData.getMediaName() == name) {
    System.out.println("found");
    break;
   }

   // mediaData = null;
  }

  System.out.println(mediaData.getMediaName());
  return mediaData;
 }

 public static void main(String[] args) {
  new ListMedia();

 }
}

Here's the output when I run server:

Starting server on port 1234

server running

name = test.avi

Nyoba.avi = test.avi

false

test.avi = test.avi

true

found

test.avi

test.avi

And here's the output when I create request :

name = test.avi

Nyoba.avi = test.avi

false

test.avi = test.avi    // Why it is false???

false

testjuga.avi = test.avi

false

testjuga.avi

 

Anyone knows why it can happen??

thanks

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