【分享】看教程必备程序，做软件就这么简单~ - 黑马程序员技术交流社区

package getFile;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class AviGet {
public static void main(String[] args) {
// TODO Auto-generated method stub
//文件格式名
String key = ".avi";
//在这里填入搜索文件夹目录
File src = new File("E:\\黑马程序员_张孝祥_Java基础加强\\01_张孝祥Java高新技术_课程价值与目标介绍");
//在这里填入目标文件目录
File dest = new File("d:\\黑马程序员_张孝祥_Java基础加强");
if((!src.exists())&&(!src.isDirectory())){
System.out.println("请确定所要搜寻目录是否正确！");
return;
}
if(!dest.exists()){
dest.mkdir();
}
move(src,dest,key);
}
public static void move(File src, File dest,String key) {
// TODO Auto-generated method stub
File[] files = src.listFiles();
for(int i = 0;i<files.length;i++){
if((!files[i].isHidden())&&files[i].isDirectory()){
move(files[i],dest,key);
}else if((!files[i].isHidden())&&files[i].getName().endsWith(key)){
String strname = files[i].getName();
File destfile = new File(dest,strname);
InputStream in = null;
int len = -1;
byte[] by = new byte[1024];
OutputStream out = null;
try {
in = new FileInputStream(files[i]);
out = new FileOutputStream(destfile);
while((len = in.read(by))!=-1){
out.write(by, 0, len);
out.flush();
}
System.out.println("完成"+strname+"的复制！");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally{
try{
if(out!=null){
out.close();
}
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try{
if(in!=null){
in.close();
}
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
}

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