FileUtils.java

package com.samsung.sprc.fileselector;

import java.io.File;

/**
 * A set of tools for file operations
 */
public class FileUtils {

  /** Filter which accepts every file */
  public static final String FILTER_ALLOW_ALL = "*.*";

  /**
   * This method checks that the file is accepted by the filter
   * 
   * @param file
   *            - file that will be checked if there is a specific type
   * @param filter
   *            - criterion - the file type(for example ".jpg")
   * @return true - if file meets the criterion - false otherwise.
   */
  public static boolean accept(final File file, final String filter) {
    if (filter.compareTo(FILTER_ALLOW_ALL) == 0) {
      return true;
    }
    if (file.isDirectory()) {
      return true;
    }
    int lastIndexOfPoint = file.getName().lastIndexOf('.');
    if (lastIndexOfPoint == -1) {
      return false;
    }
    String fileType = "*" + file.getName().substring(lastIndexOfPoint).toLowerCase();
    return fileType.compareTo(filter) == 0;
  }
}