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()));

        }

    }

}