Problems with string comparison and\or If statement

Question

Right now I'm trying to make a program that will look into all of my music folders, and rename the .mp3 files to a format i want, based on the id3 tags. The program so far looks in all of the folders I want it to, but I get stuck when I need to check if the files are .mp3 files or not. Here is my code so far:
package fileRenamer;
import java.io.File;
public class FileRenamer {
public static void main(String[] argv) {
     File artistsFolders = new File("F:/Music (MP3)");
     File[] artists = artistsFolders.listFiles();
     for(int i = 0; i < artists.length; i++){
          if(artists.isFile()) {
               System.out.println(artists[i].getName());
     } else if (artists[i].isDirectory()) {
          System.out.println(artists[i].getName());
          File albumsFolders = new File("F:/Music (MP3)/"+artists[i].getName());
          File[] albums = albumsFolders.listFiles();
          for(int a = 0; a < albums.length; a++){
               if(albums[a].isFile()) {
                    System.out.println("-" + albums[a].getName());
               } else if (albums[a].isDirectory()) {
                    System.out.println("-" + albums[a].getName());
               File songsFolders = new File("F:/Music (MP3)/"+artists[i].getName()+"/"+albums[a].getName());
               File[] songs = songsFolders.listFiles();
               for(int s = 0; s < songs.length; s++){
                    if(songs[s].isFile()) {
                         int dotPos = songs[s].getName().toString().lastIndexOf(".");
                         String extension = songs[s].getName().toString().substring(dotPos);
                         System.out.println(extension);
                         if(extension == ".mp3"){
                              System.out.println("--" + songs[s].getName());
               } else if (songs[s].isDirectory()) {
                         System.out.println("--" + songs[s].getName());
When I test the code, the line System.out.println(extension); prints .mp3 into the console for all of the .mp3 files. Whatever I try, the if(extension == ".mp3") never seems to declare the two equal. If anyone knows what my problem is, I greatly appreciate the advice and help.
Thanks in Advance,
James

Answer 1

Pojo226 wrote:
I just tried that and it worked perfectly. Thanks.You're welcome.