Convert BMPs to PNGs

import java.io.File;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.IOException;

/**
 * Convert a directory of BMPs to PNGs and delete BMPs when done.
 *
 * @author RedTeaHacker
 **/
public class Immorphage {
  public static void main(String[] args) {
    if(args.length < 1) {
      System.out.println("[Usage]:java Immorphage <dir> (-test)");
      return;
    }

    System.out.println("[Path]:" + args[0]);
    File file = new File(args[0]);
    if(!file.exists()) {
      System.out.println("[Error]:Path does not exist.");
      return;
    }
    if(!file.isDirectory()) {
      System.out.println("[Error]:Path is not a directory.");
      return;
    }

    boolean test = args.length > 1;

    System.out.println("[Count]:" + recurseFiles(file.listFiles(),"bmp","png",test));
  }

  public static int recurseFiles(File[] files,String extension,String morphExtension,boolean test) {
    if(files == null || files.length == 0) {
      return 0;
    }
    int count = 0;
    for(File file: files) {
      if(file.isDirectory()) {
        count += recurseFiles(file.listFiles(),extension,morphExtension,test);
      }
      else {
        String ext = getExtension(file).replaceAll("\\s+","");
        if(ext.equalsIgnoreCase(extension)) {
          morphFile(file,morphExtension,test);
          ++count;
        }
      }
    }
    return count;
  }

  public static String getExtension(File file) {
    String name = file.getName();
    if(name == null) {
      return "";
    }
    int i = name.lastIndexOf(".");
    if(i < 1 || (++i) >= name.length()) {
      return "";
    }
    return name.substring(i);
  }

  public static void morphFile(File file,String morphExtension,boolean test) {
    File morphFile = new File(getPathWithoutExtension(file) + "." + morphExtension);
    System.out.println("[Morph]:'" + file.getPath() + "'=>'" + morphFile.getPath() + "'");
    if(test) {
      return;
    }

    try {
      BufferedImage image = ImageIO.read(file);
      ImageIO.write(image,morphExtension,morphFile);
      file.deleteOnExit();
    }
    catch(IOException ex) {
      ex.printStackTrace();
    }
  }

  public static String getPathWithoutExtension(File file) {
    String name = file.getName();
    String path = file.getPath();
    if(name == null || name.length() < 1) {
      return path;
    }
    int i = name.lastIndexOf(".");
    if(i < 1) {
      return path;
    }
    return path.substring(0,path.length() - (name.length() - i));
  }
}