分享一个清理内存卡和U盘里垃圾的小程序

package com.he.jinbin;import java.util.Date;/**
 * 用于排序逻辑实体类
 * 
 * @author 何锦彬    QQ 277803242
 * */public class FileItem implements Comparable {    private String fileName;    private long size;    private Date creatTime;    public FileItem(String fileName, long size, Date creaDate) {        // TODO Auto-generated constructor stub
        this.fileName = fileName;        this.size = size;        this.creatTime = creaDate;
    }    public String getFileName() {        return fileName;
    }    public void setFileName(String fileName) {        this.fileName = fileName;
    }    public long getSize() {        return size;
    }    public void setSize(long size) {        this.size = size;
    }    public Date getCreatTime() {        return creatTime;
    }    public void setCreatTime(Date creatTime) {        this.creatTime = creatTime;
    }

    @Override    public int compareTo(Object o) {        if (this.size > ((FileItem) o).getSize())            return 1;        return -1;
    }

}

package com.he.jinbin;import java.io.BufferedInputStream;import java.io.BufferedReader;import java.io.File;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Collections;import java.util.Date;import java.util.List;/**
 * 用于排序逻辑主类
 * 
 * @author 何锦彬    QQ 277803242
 * */public class Sort {    public static List<FileItem> fileItems = new ArrayList<FileItem>();    public static FileItem maxFileItem;    public final static long M_1 = 1024 * 1024;    public static long temp = M_1; // 默认大于1M的文件

    public static void addFileItem(File file) {
        File[] fileList = file.listFiles();        for (int i = 0; i < fileList.length; i++) {
            file = fileList[i];            if (file.isDirectory()) {
                addFileItem(file);
            } else {                if (file.length() > temp) {
                    fileItems.add(new FileItem(file.getPath(), file.length(),                            new Date(file.lastModified())));
                }

            }
        }

    }    public static void main(String[] args) throws IOException {
        String filePath = null;
        System.out.print("输入需要排序文件地址:");
        BufferedReader inRd = new BufferedReader(new InputStreamReader(
                System.in));
        filePath = inRd.readLine();
        System.out.print("输入需要排序文件大小(单位M):");
        inRd = new BufferedReader(new InputStreamReader(System.in));
        temp = Long.parseLong(inRd.readLine())*M_1;
        inRd.close();
        System.out.println("运行中，请稍等...");
        File file = new File(filePath);
        addFileItem(file);
        SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMdd");
        Collections.sort(fileItems);
        System.out.println("从大到小文件排序为:");        for (int i = fileItems.size() - 1; i >= 0; i--) {
            FileItem item = fileItems.get(i);
            System.out.println(item.getFileName() + "-------" + item.getSize()                    + " KB" + "--------" + fmt.format(item.getCreatTime()));
        }

    }
}