Question

急求2个JAVA程序[好的追加加200分]

上了一个学期的课 JAVA学的不算太好 现在有个任务
谁有现成的150行以上的程序 什么都行 只要网上不多就行 现在急求两个 谢谢各位达人帮忙!!!
2楼的 再给出一个分就是你的了 最好带上解释
如果太多了的话请发到dorinmao@163.com

程序最好在150行以上

Answer 1

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;

public class Randomtree extends JFrame {

private JTree tree;
public static String[] school = { "初中课程", "高中课程", "大学课程" };
public static String[] color = { "颜色", "运动", "食物" };
public static String[] plant = { "植物", "动物", "人" };

public static String[][] school2= {
{ "初中一年级", "初中二年级", "初中三年级"}, {"高中一年级", "高中二年级",
"高中三年级"}, {"大学一年级", "大学二年级", "大学三年级", "大学四年级"} };
public static String[][] color2 = {
{ "绿色", "白色", "红色"}, {"足球", "篮球",
"羽毛球"}, {"面包", "牛奶", "披萨", "热狗"} };
public static String[][] plant2 = {
{ "玫瑰花", "月季花", "海棠花"}, {"猪", "狗",
"猫"}, {"黄种人", "黑种人", "白种人", } };

public static void main(String[] args) {
// TODO 自动生成方法存根
new Randomtree();
}
public Randomtree() {
super();
final Random random=new Random();
setVisible(true);
setSize(300,400);
tree = new JTree();
final JPanel panel = new JPanel();
panel.setPreferredSize(new Dimension(0, 40));
getContentPane().add(panel, BorderLayout.NORTH);
final JScrollPane scrollPane = new JScrollPane();
scrollPane.setPreferredSize(new Dimension(300, 350));
getContentPane().add(scrollPane, BorderLayout.CENTER);
final JButton button = new JButton();
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
int k=random.nextInt(3);
tree=getTree(k);
scrollPane.setViewportView(tree);
}
});

scrollPane.setViewportView(null);
button.setText("随机生成树");
panel.add(button);
pack();

}
protected JTree getTree(int n) {
String[] second=null;
String[][] three=null;
if(n==0){second=school; three=school2;}
if(n==1){second=color; three=color2;}
if(n==2){second=plant; three=plant2;}

DefaultMutableTreeNode root=new DefaultMutableTreeNode("root");
for(int i=0;i<second.length;i++){
DefaultMutableTreeNode secondNode=new DefaultMutableTreeNode(second[i]);
for (int j=0;j<three[i].length;j++){
DefaultMutableTreeNode threetNode=new DefaultMutableTreeNode(three[i][j]);
secondNode.add(threetNode);
}
root.add(secondNode);
}
JTree tree=new JTree(root);
tree.expandRow(1);
tree.expandRow(5);
tree.expandRow(9);
return tree;
}

}

第二个
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Client extends JFrame implements Runnable,ActionListener{
private JTextField txtServer = null;
private JTextField txtPort = null;
private JTextField txtUser = null;
private JTextField txtChat = null;
private JButton btnConnect = null;
private JButton btnSend = null;
private JButton btnClose = null;
private JTextArea ta = null;
private Socket client = null;
private BufferedReader in = null;
private DataOutputStream out = null;
private Thread curThread = null;

public Client() {
super("岔吧客户端");
txtServer = new JTextField(10);
txtPort = new JTextField(6);
txtUser = new JTextField(5);
txtChat = new JTextField(38);

btnConnect = new JButton("连接");
btnSend = new JButton("发送");
btnClose = new JButton("关闭");

Container cp = this.getContentPane();
Panel p = new Panel();
p.setLayout(new FlowLayout(FlowLayout.LEFT));
p.add(new JLabel("服务器:"));
p.add(txtServer);
txtServer.setText("127.0.0.1");
p.add(new JLabel("端口:"));
p.add(txtPort);
txtPort.setText("5000");
p.add(new JLabel("用户名:"));
p.add(txtUser);
txtUser.setText("按时的");
p.add(btnConnect);
p.add(btnClose);
cp.add(p , BorderLayout.NORTH);

p = new Panel();
p.setLayout(new FlowLayout(FlowLayout.LEFT));
p.add(new JLabel("发言:"));
p.add(txtChat);
p.add(btnSend);
cp.add(p , BorderLayout.SOUTH);

ta = new JTextArea(6 , 35);
JScrollPane sp = new JScrollPane(ta);
cp.add(sp , BorderLayout.CENTER);

btnConnect.addActionListener(this);
btnClose.addActionListener(this);
btnSend.addActionListener(this);
}

public void actionPerformed(ActionEvent e) {
if (e.getSource() == btnConnect) {
String strServer , strPort , strUser ;
strServer = txtServer.getText().trim();
strPort = txtPort.getText().trim();
strUser = txtUser.getText().trim();

if (strServer.equals("") || strPort.equals("") || strUser.equals("")) {
return;
}
if (client != null ){
JOptionPane.showMessageDialog(this , "请先断开连接!" ,
"连接错误" , JOptionPane.PLAIN_MESSAGE);
return;
}
try {
client = new Socket(strServer , Integer.parseInt(strPort));
in = new BufferedReader(new InputStreamReader(client.getInputStream()));
out = new DataOutputStream(client.getOutputStream());
byte[] b=strUser.getBytes("GB2312");
out.write(b,0,b.length);
out.writeBytes(strUser + "\n");
curThread = new Thread(this);
curThread.start();
}catch(Exception ce) {
JOptionPane.showMessageDialog(this , "服务器和端口设置错误!" ,
"连接错误" , JOptionPane.PLAIN_MESSAGE);
}
}

if (e.getSource() == btnClose) {
close();
}

if (e.getSource() == btnSend) {
String strChat = txtChat.getText().trim();
txtChat.setText("");
if (strChat.equals("")) {
return;
}
if (strChat.equals("Quit")) {
close();
}else {
sendMsg(strChat);
}
}
}

public void close() {
curThread = null;
if (client != null) {
try {
sendMsg("Quit");
in.close();
out.close();
client.close();
}catch(Exception xe) {
xe.printStackTrace();
}
client = null;
}else {
JOptionPane.showMessageDialog(this , "未连接到服务器!" ,
"错误" , JOptionPane.PLAIN_MESSAGE);
}
}

public void sendMsg(String msg) {
if (out != null && client != null) {
try {
byte[] b=msg.getBytes("GB2312");
out.write(b,0,b.length);
out.writeBytes(msg + "\n");
}catch(IOException e) {
e.printStackTrace();
}
}
}

public void run() {
Thread t = Thread.currentThread();
while (t == curThread && client != null) {
try {
String str = in.readLine();
ta.append(str + "\n");
}catch(IOException e) {
e.printStackTrace();
}
}
}

public static void main(String[]args) {
Client c = new Client();
c.setSize(540,300);

c.setDefaultCloseOperation(EXIT_ON_CLOSE);
c.setVisible(true);
c.setResizable(false);
}
}

第三个

import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Server extends JFrame implements Runnable{
private JTextField txtPort = null;
private JButton btnStart = null;
private JButton btnStop = null;
private JTextArea txtLog = null;
private Thread srvThread = null;
private ServerSocket server = null;
private ThreadSocket [] clients = null;
private int LISTEN_PORT ;

class ThreadSocket extends Thread {
private Server server = null;
private Socket s = null;
public String name = null;
DataOutputStream out = null;
BufferedReader in = null;

public ThreadSocket(Server server , Socket s) {
this.server = server;
this.s = s;
}

public void run() {
while (s != null)
try {
in = new BufferedReader(new InputStreamReader(s.getInputStream()));
out = new DataOutputStream(s.getOutputStream());
String str = null;
name = in.readLine();
server.addUser(name);
str = in.readLine();
while(!str.equals("Quit")) {
server.addChat(name + " : " + str);
str = in.readLine();
}
server.delUser(name);
}catch(Exception e) {
e.printStackTrace();
}
}

public void sendMsg(String msg) {
try {
byte[] b=msg.getBytes("GB2312");
out.write(b,0,b.length);
out.writeBytes("\n");
}catch(Exception e) {
e.printStackTrace();
}
}

public void close() {
try {
in.close();
s.close();
server = null;
s = null;
}catch(IOException e) {}
}
}

public Server() {
super("岔吧服务端");

txtPort = new JTextField(6);
txtPort.setText("5000");
btnStart = new JButton("启动");
btnStop = new JButton("断开");

txtLog = new JTextArea(8,35);

Container cp = this.getContentPane();

Panel p = new Panel();
p.setLayout(new FlowLayout(FlowLayout.LEFT));
p.add(new JLabel("端口:"));
p.add(txtPort);
p.add(btnStart);
p.add(btnStop);
cp.add(p,BorderLayout.NORTH);

p = new Panel();
p.setLayout(new FlowLayout(FlowLayout.LEFT));
p.add(new JLabel("信息:"));
JScrollPane sp = new JScrollPane(txtLog);
txtLog.setEditable(false);
p.add(sp);
cp.add(p , BorderLayout.CENTER);

btnStart.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
start();
}
});

btnStop.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
stop();
}
});
}

public void run() {
Thread cur = Thread.currentThread();
while (cur == srvThread) {
try {
Socket ts = server.accept();
int i;
for( i = 0; i < clients.length ; i++) {
if (clients[i] == null) {
clients[i] = new ThreadSocket(this , ts);
clients[i].start();
break;
}
}
if (i >= clients.length) {
ts.close();
ts = null;
}
}catch(Exception e) {
e.printStackTrace();
}
}
}

public void start() {
try {
LISTEN_PORT = Integer.parseInt(txtPort.getText());
server = new ServerSocket(LISTEN_PORT);
clients = new ThreadSocket[20];
txtLog.append("服务器监听端口:" + LISTEN_PORT + "\n");
}catch(Exception e) {
JOptionPane.showMessageDialog(this , e.toString() ,
"错误" , JOptionPane.PLAIN_MESSAGE);
return;
}
srvThread = new Thread(this);
srvThread.start();
}

public void stop() {
if (srvThread == null) {
JOptionPane.showMessageDialog(this , "服务器未启动!" ,
"错误" , JOptionPane.PLAIN_MESSAGE);
return;
}
try {
srvThread = null;
for (int i = 0 ; i < clients.length ; i++) {
if (clients[i] != null) {
clients[i].close();
clients[i] = null;
}
}
clients = null;
server.close();
server = null;
txtLog.append("服务器断开!\n");
}catch(IOException e) {
txtLog.append("服务器断开错误!\n");
e.printStackTrace();
}
}

public void addUser(String name) {
String str = name + "进来了!";

txtLog.append(str + "\n");
try {
for (int i = 0 ; i < clients.length ; i++) {

if (clients[i] != null) {
clients[i].sendMsg(str);
}
}
}catch(Exception e) {
e.printStackTrace();
}
}

public void delUser(String name) {
String str = name + "离开了";
txtLog.append(str + "\n");
for (int i = 0 ; i < clients.length ; i++) {
if (clients[i] != null) {
clients[i].sendMsg(str);
if (clients[i].name.equals(name)) {
clients[i].close();
clients[i] = null;
}
}
}
}

public void addChat(String chat) {
for (int i = 0 ; i < clients.length ; i ++) {
if (clients[i] != null) {
clients[i].sendMsg(chat);
}
}
}

public static void main(String[]args) {
Server s = new Server();
s.setSize(400,260);
s.setLocation(240,120);
s.setResizable(false);
s.setDefaultCloseOperation(EXIT_ON_CLOSE);
s.setVisible(true);
}
}

Answer 2

....
可惜我在网吧了。