client.java

利用Socket编程制作一个简单的C/S应用。其中

import java.net.*;
import java.io.*;
import java.awt.event.*;
import java.awt.*;
public class client extends WindowAdapter
            implements ActionListener{
               // Frame f;
                TextField tf1,tf2,tf3;
                Label label1,label2,label3;
                Button b;
                Panel p;
                Socket s1;
                OutputStream sout;
                InputStream sin;
                DataOutputStream dos;
                DataInputStream dis;
                float a1=0,a2=0,he=0;
                                                                             
       	public static void main(String args[]){
               client ce = new client();
                ce.go();
        }

	public void go()
          {     Frame f=new Frame("wenhuiping");
                
            
                p=new Panel();
                p.setLayout(null);
	        tf1=new TextField();
                tf2=new TextField();
                tf3=new TextField();	

                label1=new Label("输入第一个数:");
		 label2=new Label("输入第二个数:");
                 label3=new Label("两个数之和:");
         	 b=new Button("发送");
                 label1.setSize(100,15);
                 label2.setSize(100,15);
                 label3.setSize(80,15);
                
                tf1.setSize(100,20);
                tf2.setSize(100,20);
                tf3.setSize(100,20);
                b.setSize(50,20);
                b.setLocation(50,50);
		
	        f.add(p,"Center");
		p.add(label1);
                label1.setLocation(120,50);
                tf1.setLocation(120,100);
                label2.setLocation(250,50);
                tf2.setLocation(250,100);
                label3.setLocation(120,200);
                tf3.setLocation(200,200);
                p.add(tf1);
                p.add(label2);
               
                
                p.add(tf2);
                p.add(b);
                p.add(label3);
                   
                p.add(tf3);
               
                f.setSize(400,300);
		f.setVisible(true);
                f.addWindowListener(this);
                b.addActionListener(this);

                try{
                    s1=new Socket("localhost",8305);
                }
                catch(IOException e){}
        }       
        public void windowClosing(WindowEvent e){
                System.exit(0);
        }
        public void actionPerformed(ActionEvent e){
                a1=Float.parseFloat(tf1.getText());
                a2=Float.parseFloat(tf2.getText());
                try{
                    sout=s1.getOutputStream();
                    dos=new DataOutputStream(sout);
                    dos.writeFloat(a1);
                    dos.writeFloat(a2);
                    sin=s1.getInputStream();
                    dis=new DataInputStream(sin); 
                    he=dis.readFloat();
                    tf3.setText(String.valueOf(he));
                }    
                catch(IOException ioe){}
        }
}