Java学习(二)

在老师布置完作业以后我便开始着手建立我的程序,我设计的是一个登录系统,在一个界面选择用户名,以后输入密码进入到第二个界面,然后在第二个界面可以看到自己的个人信息。我用到了单选按钮和复选框和组合框,我能很熟练的运用这几个组件。他们都有着相似之处,单选按钮的话就是先new一个按钮组对象,在new两个按钮,然后把两根按钮添加到按钮组中,再添加到容器中。复选框更简单就是new四个对象,只要掌握好布局就行。前两个想要选择哪个按钮就让其可见就行,组合框的话就是new一个对象,然后一直添加可以了。

 

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JLabel;
import javax.swing.JOptionPane;

import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.SwingConstants;

public class FirstLogin extends JFrame {

    private JPanel contentPane;
    private JComboBox usernameInput;
    private JPasswordField pwdInput;
    private JLabel warning;
    

    public static void main(String args[]) {
        
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    
                    FirstLogin window = new FirstLogin();
                    window.setResizable(false);
                    window.setVisible(true);
                    
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }
        
    class Success extends JFrame{
        
        public Success() {

            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            setBounds(630, 250, 450, 500);
            contentPane = new JPanel();
            contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
            setContentPane(contentPane);
            contentPane.setLayout(null);
            JLabel title = new JLabel("个人资料");
            title.setForeground(Color.BLACK);
            title.setFont(new Font("微软雅黑", Font.PLAIN, 15));
            title.setBounds(10, 5, 292, 41);
            contentPane.add(title);
            
            /*
             * 姓名标签
             */
            JLabel name = new JLabel("姓名:");
            contentPane.add(name);
            name.setBounds(20, 40, 292, 41);
            
            /*
             * 性别标签
             */
            JLabel sex = new JLabel("性别:");
            contentPane.add(sex);
            sex.setBounds(20, 80, 292, 41);
            
            /*
             * 出生年月标签
             */
            JLabel date = new JLabel("出生年月:");
            contentPane.add(date);
            date.setBounds(20, 120, 292, 41);
            
            /*
             * 爱好标签
             */
            JLabel hobby = new JLabel("爱好:");
            contentPane.add(hobby);
            hobby.setBounds(20, 160, 292, 41);
            
            /*
             * 姓名文本框
             */
            JTextField  nameinput = new JTextField("王杰");
            contentPane.add(nameinput);
            nameinput.setBounds(60, 50, 50, 20);
            
            /*
             * 性别按钮
             */
            ButtonGroup btnGroup = new ButtonGroup();
            JRadioButton s1 = new JRadioButton("");
            s1.setBounds(60, 90,60,25);
            s1.setSelected(true);
            JRadioButton s2 = new JRadioButton("");
            s2.setBounds(130, 90,60,25);
            btnGroup.add(s1);
            btnGroup.add(s2);
            contentPane.add(s1);
            contentPane.add(s2);
            
            
            /*
             * 出生日期
             */
            
            JComboBox date1 = new JComboBox();
            date1.addItem("1995年");
            date1.setBounds(92, 130, 70, 20);
            contentPane.add(date1);
            
            JComboBox date2 = new JComboBox();
            date2.addItem("1月");
            date2.setBounds(170, 130, 50, 20);
            contentPane.add(date2);
            
            
            /*
             * 爱好
             */
            JCheckBox check1 = new JCheckBox("游泳");
            JCheckBox check2 = new JCheckBox("跑步");
            JCheckBox check3 = new JCheckBox("钓鱼");
            JCheckBox check4 = new JCheckBox("篮球");
            check1.setBounds(60, 200,80, 25);
            check1.setSelected(true);
            check2.setBounds(60, 260, 80, 25);
            check3.setBounds(220, 200, 80, 25);
            check3.setSelected(true);
            check4.setBounds(220, 260, 80, 25);
            contentPane.add(check1);
            contentPane.add(check2);
            contentPane.add(check3);
            contentPane.add(check4);    
            this.setResizable(false); 
            this.setVisible(true);
        }
    }
            
    
    public FirstLogin() {
    
        /*
        * 设置关闭按钮功能
        */
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(630, 250, 500, 350);//界面长宽高
        contentPane = new JPanel();//创建容器
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));//容器边界
        setContentPane(contentPane);//添加容器到主界面
        contentPane.setLayout(null);//设置布局为绝对布局
        /*
        *初始化提示框
        */
        warning = new JLabel("");
        warning.setHorizontalAlignment(SwingConstants.CENTER);
        warning.setBounds(105, 229, 239, 23);
        warning.setForeground(Color.red);
        contentPane.add(warning);
        /*
        * 标题栏
        */
        JLabel title = new JLabel("用户管理系统");
        title.setForeground(Color.BLUE);
        title.setFont(new Font("微软雅黑", Font.PLAIN, 24));
        title.setBounds(160, 20, 292, 41);
        contentPane.add(title);
        /*
        * 版本栏
        */
        JLabel version = new JLabel("version : V1.0");
        version.setBounds(385, 295, 97, 15);
        contentPane.add(version);
    
        /*
        * 用户名栏
        */
        JLabel username = new JLabel("用户名:");
        username.setBounds(72, 105, 63, 26);
        contentPane.add(username);
        /*
        * 密码栏
        */
        JLabel pwd = new JLabel("密码 :");
        pwd.setBounds(72, 141, 63, 26);
        contentPane.add(pwd);
        /*
        * 用户名输入栏
        */
        usernameInput = new JComboBox();
        usernameInput.setBounds(187, 107, 177, 23);
        usernameInput.addItem("");
        usernameInput.addItem(1);
        usernameInput.addItem(2);
        usernameInput.addItem(3);
    
        contentPane.add(usernameInput);

        /*
        * 密码输入栏
        */
        pwdInput = new JPasswordField("");
        pwdInput.setBounds(187, 144, 177, 23);
        contentPane.add(pwdInput);

        /*
        * 登录按钮
        */
        
        JButton enter = new JButton("登录");
        enter.setBounds(65, 189, 93, 23);
        /**
        * 注册监听
        */
        
        enter.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                
        String accout = usernameInput.getSelectedItem().toString();
        String pwd = new String(pwdInput.getPassword());
        if(accout.equals("1")&&pwd.equals("123")){
             setVisible(false);
             new Success(); 
        }    
          else{
     
             if(accout.equals("2")&&pwd.equals("123")){
                setVisible(false);
                 new Success(); 
      }    
            else{
              if(accout.equals("3")&&pwd.equals("123")){
                 setVisible(false);
                 new Success();     
       }    
              else{
                 JOptionPane.showMessageDialog(warning, "您输入的用户名与密码不匹配,请重新输入");
            
        }}}}
            });
        
        contentPane.add(enter);
    
        
        /*
        * 退出按钮
        */
        JButton exit = new JButton("退出");
        exit.setBounds(265, 189, 93, 23);
        /**
        * 注册监听
        */
        exit.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent e) {
                FirstLogin.this.dispose();
            }
        });
        contentPane.add(exit);

}
}

 

 

 

用鼠标点击退出按钮,界面消失。

 

 

 

我是软一王杰

 

posted on 2016-03-16 19:21  Conquer丶  阅读(199)  评论(1编辑  收藏  举报

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