【小程序分享篇 一 】开发了个JAVA小程序， 用于清除内存卡或者U盘里的垃圾文件非常有用

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()));
} }
}