视频的拷贝
package com.softeem.output;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class FileCopy {
/**
* 完成文件拷贝
* @param source 源文件
* @param targetDir 目标目录
*/
public void copy(File source,File targetDir){
//根据指定的目录以及源文件名称构建新的file对象
File target = new File(targetDir,source.getName());
InputStream is = null;
OutputStream os = null;
try {
//创建源文件的输入流
is = new FileInputStream(source);
//创建目标文件的输出流
os = new FileOutputStream(target);
//声明字节缓冲区
byte[] b = new byte[1024];
//声明临时变量存储每次读取的真实长度
int len = 0;
System.out.println("开始拷贝...");
while((len = is.read(b)) != -1){
os.write(b,0,len);
}
System.out.println("拷贝完成！");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally{
try {
if(os != null){
os.close();
}
if(is != null){
is.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
File f1 = new File("D:\\软帝\\1.mp4");
File f2 = new File("D:\\软帝\\视频"); //d:/视频/1.mp4
new FileCopy().copy(f1, f2);
}
}
飞秋小程序
package com.softeem.net.udp;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
public class MyFeiQ {
public static void main(String[] args) throws IOException {
String ip = "192.168.4.122";
//创建基于UDP协议的网络通道
DatagramSocket ds = new DatagramSocket(8800);
//获取标准输入流并包装为缓冲流
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
DatagramPacket dp = null;
byte[] b = null;
String msg = "";
while(!(msg = br.readLine()).equals("quit")){
//接受消息
b = msg.getBytes();
dp = new DatagramPacket(b, 0, b.length, InetAddress.getByName(ip), 8081);
ds.send(dp);
//发送消息
ds.receive(dp);
msg = new String(dp.getData());
System.out.println(dp.getAddress().getHostAddress()+":"+msg);
}
}
}