JAvaファイル操作ツールクラス

package com.he.util;

import java.io.File;

/** *      * * @author hemingdong * */
public class FileOperation {
    /** *     ，          * * @param fileName *         * @return       true，    false */
    public static boolean deleteFileOrDirectory(String fileName) {
        File file = new File(fileName);
        if (!file.exists()) {
            System.out.println("      :" + fileName + "   ！");
            return false;
        } else {
            if (file.isFile()){
                boolean flag=false;
                int state= deleteFile(fileName);
                switch (state) {
                case -1:
                case 0:
                    flag=false;
                    break;
                case 1:
                    flag = true;
                    break;
                default:
                    flag=false;
                    break;
                }
                return flag;
            }
            else{
                return deleteDirectory(fileName);
            }
        }
    }

    /** *        * * @param fileName *            * @return      ：-1=     ，0=    ，1=     */
    public static int deleteFile(String fileName) {
        File file = new File(fileName);
        //               ，       ，     
        if (file.exists() && file.isFile()) {
            if (file.delete()) {
                System.out.println("      " + fileName + "  ！");
                return 1;
            } else {
                System.out.println("      " + fileName + "  ！");
                return 0;
            }
        } else {
            System.out.println("        ：" + fileName + "   ！");
            return -1;
        }
    }

    /** *             * * @param dir *             * @return         true，    false */
    public static boolean deleteDirectory(String dir) {
        //   dir         ，         
        if (!dir.endsWith(File.separator))
            dir = dir + File.separator;
        File dirFile = new File(dir);
        //   dir        ，        ，   
        if ((!dirFile.exists()) || (!dirFile.isDirectory())) {
            System.out.println("      ：" + dir + "   ！");
            return false;
        }
        boolean flag = true;
        //                 
        File[] files = dirFile.listFiles();
        for (int i = 0; i < files.length; i++) {
            //      
            if (files[i].isFile()) {
                int state= deleteFile(files[i].getAbsolutePath());
                switch (state) {
                case -1:
                case 0:
                    flag=false;
                    break;
                case 1:
                    flag = true;
                    break;
                default:
                    flag=false;
                    break;
                }
                if (!flag)
                    break;
            }
            //      
            else if (files[i].isDirectory()) {
                flag = deleteDirectory(files[i].getAbsolutePath());
                if (!flag)
                    break;
            }
        }
        if (!flag) {
            System.out.println("      ！");
            return false;
        }
        //       
        if (dirFile.delete()) {
            System.out.println("    " + dir + "  ！");
            return true;
        } else {
            return false;
        }
    }
}