有人知道这个用java怎么写嘛 。。。我是一个萌新

Question

使用Swing与基于UDP的Socket程序实现一个存钱系统
1.使用Swing实现客户端的图形界面，包括单选框（5元、10元、20元3种选项）和存入按钮。
2.选中相应的钱数点击存入按钮后，把钱数提交给服务器。
3.服务器对所有存入的钱数进行累积，并把当前累积的钱数返回给客户端。
4.客户端在存入按钮下面显示当前总钱数。

Answer 1

做一个客户端类和服务端类，服务端读取客户端传来的值进行累加并返回给客户端，再用Swing做两控件就行了

Answer 2

谢谢谢谢，那这个还涉及到io流吗？io

Answer 3

谢谢谢谢，那这个还涉及到io流吗？io是的a 

Answer 4

Clientpackage Test;import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ButtonGroup;
import javax.swing.JLabel;
/**
 *
 * @author Administrator
 */
public class Client extends javax.swing.JFrame {
    private final ButtonGroup g;
    private final DatagramSocket socket;
    private java.awt.Button button;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JRadioButton jRadioButton1;
    private javax.swing.JRadioButton jRadioButton2;
    private javax.swing.JRadioButton jRadioButton3;
private static final long serialVersionUID = 1L;
/**
     * Creates new form SS
     */
    public Client() throws SocketException {
        this.socket = new DatagramSocket();
        socket.setSoTimeout(8000);
        this.g = new ButtonGroup();
        initComponents();
        g.add(this.jRadioButton1);
        g.add(this.jRadioButton2);
        g.add(this.jRadioButton3);
        byte[] b = new byte[4];
        try {
            final DatagramPacket packet = new DatagramPacket(b,0,b.length,java.net.InetAddress.getByName("127.0.0.1"),12345);
            socket.send(packet);
            new Thread(() -> {
                while(true){
                try {
                    packet.setData(new byte[4]);
                    socket.receive(packet);
                    byte[] sum = packet.getData();
                    int res = (sum[0] & 0xff )<<24 | (sum[1] & 0xff)<< 16 | (sum[2] & 0xff) << 8 | (sum[3] & 0xff);
                    this.jLabel1.setText("余额:"+res);
                } catch (IOException ex) {
                    packet.setData(new byte[]{0});
                    try {
                        socket.send(packet);
                    } catch (IOException ex1) {
                        Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex1);
                    }
                }
                }
            }).start();
        } catch (UnknownHostException ex) {
            Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
        }
        
    }    private void initComponents() {        jRadioButton1 = new javax.swing.JRadioButton();
        jRadioButton2 = new javax.swing.JRadioButton();
        jRadioButton3 = new javax.swing.JRadioButton();
        button = new java.awt.Button();
        jLabel1 = new javax.swing.JLabel("余额",JLabel.CENTER);        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);        jRadioButton1.setText("5元");        jRadioButton2.setText("10元");        jRadioButton3.setText("30元");        button.setLabel("SaveMoney");
        button.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                buttonMouseClicked(evt);
            }
        });        jLabel1.setText("未连接服务器，正在重连……");        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(200, 200, 200)
                .addComponent(button, javax.swing.GroupLayout.PREFERRED_SIZE, 145, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addGroup(layout.createSequentialGroup()
                .addGap(100, 100, 100)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 319, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jRadioButton1)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 111, Short.MAX_VALUE)
                        .addComponent(jRadioButton2)
                        .addGap(128, 128, 128)
                        .addComponent(jRadioButton3)
                        .addGap(90, 90, 90))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(46, 46, 46)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jRadioButton1)
                    .addComponent(jRadioButton2)
                    .addComponent(jRadioButton3))
                .addGap(67, 67, 67)
                .addComponent(button, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(51, 51, 51)
                .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 56, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(62, Short.MAX_VALUE))
        );        jRadioButton3.setSelected(true);        pack();
    }// </editor-fold>                        
    private void buttonMouseClicked(java.awt.event.MouseEvent evt) {                                    
        byte flag = 0;
        if(this.jRadioButton1.isSelected()){
            flag = 5;
        }else if(this.jRadioButton2.isSelected()){
            flag = 10;
        }else{
            flag = 30;
        }
        byte[] b = {flag};
        try {
            DatagramPacket packet = new DatagramPacket(b,0,b.length,java.net.InetAddress.getByName("127.0.0.1"),12345);
            this.socket.send(packet);
        } catch (UnknownHostException ex) {
            Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
        }
    }                                       /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Client.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Client.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Client.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Client.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }        java.awt.EventQueue.invokeLater(() -> {
            try {
                new Client().setVisible(true);
            } catch (SocketException ex) {
                Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex);
            }
        });
    }
}Serverpackage Test;import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;public class Server {
private static int sum = 0;
private static DatagramSocket socket;

public static void main(String[] args) throws IOException {
socket = new DatagramSocket(12345);
byte[] b = new byte[1];
DatagramPacket packet = new DatagramPacket(b, b.length);
while(true) {
socket.receive(packet);
sum += packet.getData()[0];
byte[] send = {(byte) (sum>>24),(byte) (sum>>16),(byte) (sum>>8),(byte) sum};
packet.setData(send);
socket.send(packet);
}

}}