Java运行出错

来源：百度知道 编辑：UC知道 时间：2024/06/02 05:40:24
package proxy.c15_8;

import java.io.*;
import java.net.*;
import java.util.*;

public class c15_8{

/**
* @param args
*/

// TODO 自动生成方法存根

public static void main(String[] args){
DatagramPacket packet;
DatagramSocket socket;
InetAddress address;
String d1,d2,d3;
int port;
byte[]buf1=new byte[1000],buf2=new byte[1000];
BufferedReader buf_reader=new BufferedReader(new InputStreamReader(System.in));
String s="Hello server!",s2;

if(args.length<3)
{System.out.println("输入本地端口号,服务器名,服务器端口号 ");
System.exit(0);
}
try{
socket =new DatagramSocket (Integer.parseInt(args[0]));
address=InetAddress.getByName(args[1]);
port= Integer.parseInt(args[2]);
buf1=s.getBytes();
packet=new DatagramPacket(buf1,buf1.length,address,port);
socket.receive(packet);
s2=new S

1提

public class Shuchu{
public static void main(String args[]){
System.out.println("java test!");}}
2.
import java.awt.Graphics;
import java.applet.Applet;
public class Shuchu extends Applet{
public void paint(Graphics g){
g.drawString("Java test!",20,30);}}

html文件中
<HTML>
<HEAD>
<applet code="Shuchu.class" width=300 height=300>
</applet>
</body>
</html>

3.
import java.util.*;
public class Ex{
public static void main(String args[]){
int i,count=0;
Random rand=new Random();
while (true){
i=rand.nextInt()%100;
count++;
System.out.print("\ti="+i);
if(i==50)
break;
if(count%5==0)
System.out.println("\n");}
System.out.println("\n");
System.o