登錄界面：

package swing;

public class mains {

public static void main(String[] args) {

// TODO Auto-generated method stub

new swing();

}

}

package swing;

import java.awt.Color;

import java.awt.Font;

import javax.swing.*;

public class swing extends JFrame{

/*

* JLable:文本控件

* JTextField:文本框

* JPasswordField:密碼框

* JButton:按鈕

* JComboBox:下拉框

* */

public static JLabel lb1,lb2,lb3,lb4=null;

public static JTextField txt1=null;

public static JPasswordField pwd=null;

public static JComboBox com=null;

public static JButton btn1,btn2=null;

public swing(){

this.setTitle("第一個(gè)頁(yè)面");

//布局方式，大小，顯示未知，釋放資源，顯示

this.setLayout(null);//布局的時(shí)候使用空布局

this.setSize(500,400);//頁(yè)面的大小

this.setLocationRelativeTo(null);//居中顯示

lb1=new JLabel("用戶名");

lb2=new JLabel("用戶密碼");

lb3=new JLabel("用戶類型");

lb4=new JLabel("登錄窗體");

Font f=new Font("微軟雅黑",Font.BOLD,35);

lb4.setFont(f);

lb4.setForeground(Color.red);

lb4.setBounds(160,30,140,40);

//統(tǒng)一使用空布局

// 四個(gè)參數(shù):分別是x位置? y位置，寬度，高度

lb1.setBounds(100, 100, 70,30);

lb2.setBounds(100,140,70,30);

lb3.setBounds(100,180,70,30);

txt1=new JTextField();

txt1.setBounds(170,100,150,30);

pwd=new JPasswordField();

pwd.setBounds(170,140,150,30);

com=new JComboBox();

com.addItem("會(huì)員用戶");

com.addItem("普通用戶");

com.setBounds(170,180,100,30);

btn1=new JButton("登錄");

btn1.setBounds(130,220,70,30);

btn2=new JButton("取消");

btn2.setBounds(240,220,70,30);

this.add(lb1);this.add(lb2);this.add(lb3);

this.add(txt1);this.add(pwd);this.add(com);

this.add(btn1);this.add(btn2);this.add(lb4);

//釋放資源(為什么要釋放資源)

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);//顯示窗口

}

}

注冊(cè)界面：

package swing;

public class mains {

public static void main(String[] args) {

// TODO Auto-generated method stub

// new swing();

new zhuCe();

}

}

package swing;

import java.awt.Color;

import java.awt.Font;

import javax.swing.*;

public class zhuCe extends JFrame{

public static JLabel lb1,lb2,lb3,lb4,lb5=null;

public static JTextField txt1,txt2,txt3,txt4,txt5=null;

public static JPasswordField pwd2,pwd3=null;

public static JComboBox com=null;

public static JButton btn1,btn2=null;

public zhuCe(){

this.setTitle("用戶注冊(cè)");

this.setLayout(null);

this.setSize(500,400);

this.setLocationRelativeTo(null);

lb1=new JLabel("用戶名");

lb2=new JLabel("密碼");

lb3=new JLabel("確認(rèn)密碼");

lb4=new JLabel("問(wèn)題");

lb5=new JLabel("答案");

lb1.setBounds(100, 40, 70,30);

lb2.setBounds(100,80,70,30);

lb3.setBounds(100,120,70,30);

lb4.setBounds(100, 160, 70,30);

lb5.setBounds(100,200,70,30);

txt1=new JTextField();

txt1.setBounds(170,40,150,30);

txt4=new JTextField();

txt4.setBounds(170,160,150,30);

txt5=new JTextField();

txt5.setBounds(170,200,150,30);

pwd2=new JPasswordField();

pwd2.setBounds(170,80,150,30);

pwd3=new JPasswordField();

pwd3.setBounds(170,120,150,30);

btn1=new JButton("注冊(cè)");

btn1.setBounds(130,260,70,30);

btn2=new JButton("取消");

btn2.setBounds(240,260,70,30);

this.add(lb1);this.add(lb2);this.add(lb3);

this.add(lb4);this.add(lb5);

this.add(txt1);this.add(txt4);this.add(txt5);

this.add(pwd2);this.add(pwd3);

this.add(btn1);this.add(btn2);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

}