Java图形用户界面编程



import java.awt.Color;

import java.awt.Component;

import java.awt.Container;

import java.awt.Font;

import java.awt.Toolkit;

import java.awt.event.KeyEvent;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import javax.swing.ButtonGroup;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JPasswordField;

import javax.swing.JRadioButton;

import javax.swing.JSeparator;

import javax.swing.JTextField;

public class Tt extends JFrame{

private Container con;

private JLabel jla;

private JLabel jla1;

private JLabel jla2;

private JTextField jte;

private JPasswordField jpa;

private JCheckBox jch;

private JSeparator jse;

private JRadioButton jra;

private JRadioButton jra1;

private JButton jbu;

public Tt(){

//工具类，可以获取屏幕信息，还可以操作图标图片

Toolkit tk = Toolkit.getDefaultToolkit();

//设置大小

this.setSize(375, 400);

//设置标题

this.setTitle("连接 tt");

//窗体不可改变

this.setIconImage(tk.createImage(""));

//窗体的位置

this.setLocation(((int)tk.getScreenSize().getWidth()-375)/2, ((int)tk.getScreenSize().getHeight()-400)/2);

//设置关闭窗口就关闭程序

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.addtt();

//设置窗体显示

this.setVisible(true);

}

public void addtt(){

//获取内容面板

this.con = this.getContentPane();

this.con.setLayout(null);

//设置图标标签

this.jla = new JLabel();

this.jla.setIcon(new ImageIcon("Picture/2.png"));

this.jla.setBounds(5, 5, 355, 150);

this.con.add(this.jla);

//设置名字标签

this.jla1 = new JLabel();

this.jla1.setText("用户名(U)：");

this.jla1.setDisplayedMnemonic(KeyEvent.VK_U);

this.jla1.setFont(new Font("黑体",Font.BOLD,13));

this.jla1.setBounds(15, 160, 80, 30);

this.con.add(this.jla1);

//设置文本框

this.jte = new JTextField();

this.jte.setBounds(100, 160, 200, 25);

this.jte.setFont(new Font("华文楷体",Font.PLAIN,15));

// this.jte.setForeground(Color.GREEN);

this.con.add(this.jte);

//设置名字标签

this.jla2 = new JLabel();

this.jla2.setText("密码(P)：");

this.jla2.setDisplayedMnemonic(KeyEvent.VK_P);

this.jla2.setBounds(15, 190,80,25);

this.jla2.setFont(new Font("黑体",Font.BOLD,13));

this.con.add(this.jla2);

//设置密码框

this.jpa = new JPasswordField();

this.jpa.setBounds(100, 190, 200, 25);

this.jpa.setFont(new Font("华文楷体",Font.ITALIC,12));

this.jpa.setForeground(Color.blue);

this.jpa.setText("[要更改保存的密码，请单击这里]");

//显示密码

this.jpa.setEchoChar((char)0);

this.con.add(this.jpa);

this.jch = new JCheckBox();

this.jch.setText("为下面用户保存用户名和密码(S)：");

this.jch.setMnemonic(KeyEvent.VK_S);

this.jch.setBounds(15, 230, 250, 20);

this.con.add(this.jch);

//分割线

this.jse = new JSeparator();

this.jse.setBackground(Color.black);

this.jse.setBounds(15, 220, 320, 2);

this.con.add(this.jse);

this.jra= new JRadioButton();

this.jra.setText("只有我(N)");

this.jra.setMnemonic(KeyEvent.VK_N);

this.jra1 = new JRadioButton();

this.jra1.setText("任何使用此计算机的人(A)");

this.jra1.setMnemonic(KeyEvent.VK_A);

//设置被选中为真

// this.jra.setSelected(true);

this.jra.setBounds(30, 260, 200, 20);

this.jra1.setBounds(30, 290, 200, 20);

this.con.add(this.jra);

this.con.add(this.jra1);

//按钮组--是一个逻辑概念，将放入其中的按钮在逻辑上进行分组

ButtonGroup bg = new ButtonGroup();

bg.add(this.jra);

bg.add(this.jra1);

//分割线

this.jse = new JSeparator();

this.jse.setBackground(Color.black);

this.jse.setBounds(15, 312, 320, 2);

this.con.add(this.jse);

this.jbu = new JButton();

this.jbu.setText("连接(C)");

this.jbu.setMnemonic(KeyEvent.VK_C);

this.jbu.setBounds(15, 320, 80, 25);

this.con.add(this.jbu);

this.jbu = new JButton();

this.jbu.setText("取消");

this.jbu.setBounds(100, 320, 80, 25);

this.con.add(this.jbu);

this.jbu = new JButton();

this.jbu.setText("属性(O)");

this.jbu.setMnemonic(KeyEvent.VK_O);

this.jbu.setBounds(185, 320, 80, 25);

this.con.add(this.jbu);

this.jbu = new JButton();

this.jbu.setText("帮助(H)");

this.jbu.setMnemonic(KeyEvent.VK_O);

this.jbu.setBounds(270, 320, 80, 25);

this.con.add(this.jbu);

}

}