java 合并各程序_Java文件合并

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.nio.channels.FileChannel;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

public class FileCombine {

public void combineFiles(List files,String saveFileName) throws IOException{

File mFile=new File(saveFileName);

if(!mFile.exists()){

mFile.createNewFile();

}

FileChannel mFileChannel = new FileOutputStream(mFile).getChannel();

FileChannel inFileChannel;

for(File file:files){

inFileChannel=new FileInputStream(file).getChannel();

inFileChannel.transferTo(0, inFileChannel.size(), mFileChannel);

inFileChannel.close();

}

mFileChannel.close();

}

public static void main(String[] args) {

FileCombine fc=new FileCombine();

File file=new File("C:\\Users\\feng\\Desktop\\qiao\\assets");

List files=new ArrayList();

for(int i=1;i<9;i++){

files.clear();

for(File tmpFile:file.listFiles()){

if(tmpFile.getName().startsWith(i+"")){

files.add(tmpFile);

}

try {

Collections.sort(files, new Comparator() {

@Override

public int compare(File o1, File o2) {

// TODO Auto-generated method stub

int result=0;

String name1=o1.getName().replace(".dat", "").replace(".", "");

String name2=o2.getName().replace(".dat", "").replace(".", "");

double d=Double.parseDouble(name1)*100-Double.parseDouble(name2)*100;

System.out.println(d);

if(d>0){

result=1;

}else if(d<0) {

result=-1;

}else{

result=0;

}

return result;

}

});

System.out.println(Arrays.toString(files.toArray()));

fc.combineFiles(files, "C:\\Users\\feng\\Desktop\\qiao\\"+i+".txt");

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

1.[文件] FileCombine.java ~ 2KB 下载(61)

package com.lnsd;