flowlayoutexample.java

Java课程中所有的可运行程序 全部都是java课程中所涉及到的源码

import java.awt.event.*;
import java.awt.*;
 public class FlowLayoutExample extends Frame {

Label l1,l2,l3;
 Button b1=new Button("登录");
Button b2=new Button("重置");
TextField txt1,txt2;
TextArea txt3;
Panel p1,p2,p3,p4,p5;

public FlowLayoutExample(String ss)
{
    super(ss);

setLayout(new FlowLayout());
l3=new Label("系统登录界面");
p1=new Panel();
p1.add(l3);

    Label l1=new Label("用户名:");
	txt1=new TextField(5);

p2=new Panel();
p2.setLayout(new FlowLayout());
p2.add(l1);
p2.add(txt1);


Label l2=new Label("密码 :");
	txt2=new TextField(8);
	txt2.setEchoChar('*');

p3=new Panel();
p3.add(l2);
p3.add(txt2);

txt3=new TextArea();
txt3.setText("这里一个登录界面......"+"\n");
txt3.setRows(5);
txt3.setColumns(18);
txt3.append("这里一个登录界面......"+"\n");
txt3.insert("这里一个登录界面......"+"\n",2);
txt3.setEditable(false);
p4=new Panel();
p4.add(txt3);

p5=new Panel();
p5.add(b1);
p5.add(b2);

add(p1);
add(p2);
add(p3);
add(p4);
add(p5);
}

 public static void main(String args[]) {
        FlowLayoutExample nowFrame=new FlowLayoutExample("FlowLayoutExample");
         nowFrame.addWindowListener(new WindowAdapter(){
   public void windowClosing(WindowEvent e){
    System.exit(0);
         }
  });
nowFrame.pack();
  nowFrame.show();
    }

 }