E盘下新建个mt4文件夹，把要检测的图片放进去，在新建个mt2文件夹用来存放重复图片

package mytest; import java.io.*; import java.util.Iterator; import java.util.TreeSet; public class CreateFile { /** * @param args * @throws IOException */ public static void main(String[] args) throws IOException { // TODO Auto-generated method stub //File f1=new File("E:\\mt3"); File f2=new File("E:\\mt4"); //File f2=new File("E:\\mt2"); try { long startTime=System.currentTimeMillis(); //delDoubleFile(f1,f2); //findSingleFile(f2); findSingleFile(f2,"mt2"); //参数一是被检测的文件不能带有文件夹参数二是重复元素复制到哪个文件夹中 //reName(f1); //reName(f2); long endTime=System.currentTimeMillis(); timechange(endTime-startTime); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } private static void timechange(long ls) { // TODO Auto-generated method stub int second=(int) (ls/1000); int h = 0; int d = 0; int s = 0; int temp = second%3600; if(second>3600){ h= second/3600; if(temp!=0){ if(temp>60){ d = temp/60; if(temp%60!=0){ s = temp%60; } }else{ s = temp; } } }else{ d = second/60; if(second%60!=0){ s = second%60; } }System.out.println("用时"+h+"时"+d+"分"+s+"秒"); } /*private static synchronized void fileCopyDemo(File file1,File file2,int name) throws Exception{//将两个文件复制到同一个文件夹中 File objectDir1=new File("E:\\mt2"+"\\"+name); objectDir1.mkdir(); //创建文件夹File objectPath1=new File ("E:\\mt2"+"\\"+name+"\\"+file1.getName()+".jpg"); FileInputStream fis1=new FileInputStream(file1); FileOutputStream fos1=new FileOutputStream(objectPath1); byte []byt1=new byte[1024]; int len1=0; while((len1=fis1.read(byt1))!=-1){ fos1.write(byt1); fos1.flush(); } fis1.close(); fos1.close(); System.out.println(name); File objectPath2=new File ("E:\\mt2"+"\\"+name+"\\"+file2.getName()+".jpg"); FileInputStream fis2=new FileInputStream(file2); FileOutputStream fos2=new FileOutputStream(objectPath2); byte []byt2=new byte[1024]; int len2=0; while((len2=fis2.read(byt2))!=-1){ fos2.write(byt2); fos2.flush(); } fis2.close(); fos2.close(); System.out.println(name); } */ private static void fileCopyDemo(File file,int name) throws Exception{//按数字重命名 File objectPath=new File ("E:\\mt2\\"+name+".jpg"); FileInputStream fis=new FileInputStream(file); FileOutputStream fos=new FileOutputStream(objectPath); byte []byt=new byte[1024]; int len=0; while((len=fis.read(byt))!=-1){ fos.write(byt); fos.flush(); } fos.close(); System.out.println(name); } private static void fileCopyDemo(File file,String object) throws Exception{//打印到目标文件地址 File objectPath=new File ("E:\\"+object+"\\"+file.getName()); FileInputStream fis=new FileInputStream(file); FileOutputStream fos=new FileOutputStream(objectPath); byte []byt=new byte[1024]; int len=0; while((len=fis.read(byt))!=-1){ fos.write(byt); fos.flush(); } fos.close(); fis.close(); System.out.println("正在将重复元素"+file.getName()+"复制到"+object+"文件夹"); } private staticvoid findSingleFile(File file1,String copyobjectpath) throws Exception { // TODO Auto-generated method stubFile []files1=file1.listFiles(); TreeSet tchongfu=new TreeSet(); TreeSet tdayin=new TreeSet(); int count=0; for(int x=0; x tdayin,String object) throws Exception { // TODO Auto-generated method stubIterator it =tdayin.iterator(); while(it.hasNext()) { String f= ((File)it.next()).getName(); fileCopyDemo((new File("E:\\mt4\\" + f)),object); } } private static void delFile(TreeSet ts) throws Exception{ Iterator it =ts.iterator(); while(it.hasNext()) { String sss=((File)it.next()).getName(); System.out.println(sss+"删除"+((new File("E:\\mt4\\" + sss)).delete()?"成功":"失败")); } } private static int getNumber(File file) {//得到文件个数 // TODO Auto-generated method stub int i=0; File []fis=new File[1]; File []files=file.listFiles(); for(int x=0; x