黑马程序员_GUI部分代码体现

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常见的组件和菜单（jmenubar）

package cn.itcast.a_gui;

import java.awt.BorderLayout;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JTextArea;
import javax.swing.JTextField;


import cn.itcast.a_util.FrameUtil;

public class Demo6 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		JFrame frame = new JFrame();
		
		//面板
		JPanel panel = new JPanel();
//		panel.setBackground(Color.red);
		frame.add(panel);
		
		
		//标签
		JLabel label = new JLabel("用户名：");
		panel.add(label);
		
		//文本域
		JTextField textField = new JTextField(12);
		panel.add(textField);
		
		//标签
		JLabel label2 = new JLabel("密码：");
		panel.add(label2);
		//密码域
		JPasswordField passwordField = new JPasswordField(8);
		panel.add(passwordField);
		
		//单选按钮
		JLabel label3 = new JLabel("性别:");
		panel.add(label3);
		JRadioButton man = new JRadioButton("男");
		JRadioButton woman = new JRadioButton("女");
		//单选按钮-互斥(多选一)
		ButtonGroup buttonGroup = new ButtonGroup();
		buttonGroup.add(man);
		buttonGroup.add(woman);
		//单选按钮不能添加进容器
		panel.add(man);
		panel.add(woman);
		
		
		//复选框
		JLabel label4 = new JLabel("爱好:");
		panel.add(label4);
		JCheckBox play = new JCheckBox("运动");
		JCheckBox sleep = new JCheckBox("睡觉");
		JCheckBox movie = new JCheckBox("看电影");
		panel.add(play);
		panel.add(sleep);
		panel.add(movie);
		
		//文本域
		JLabel label5 = new JLabel("个人简历");
		panel.add(label5);
		JTextArea textArea = new JTextArea(10,10);
		panel.add(textArea);

		//列表
		String[] data = {"one","two","three"};
		JList list = new JList(data);
		panel.add(list);
		
		//按钮-注册
		JButton button = new JButton("注册");
		panel.add(button);
		
		
		//菜单条
		JMenuBar menuBar = new JMenuBar();
		//菜单
		JMenu menu1 = new JMenu("文件");
		JMenu menu2= new JMenu("格式");
		JMenu menu3 = new JMenu("帮助");
		JMenu menu4 = new JMenu("页面设置");
		//菜单项
		JMenuItem item1 = new JMenuItem("新建");
		JMenuItem item2 = new JMenuItem("保存");
		JMenuItem item3 = new JMenuItem("另存为");
		JMenuItem item4 = new JMenuItem("段落设置");
		JMenuItem item5 = new JMenuItem("文字设置");
		JMenuItem item6 = new JMenuItem("颜色设置");
		
		menuBar.add(menu1);
		menuBar.add(menu2);
		menuBar.add(menu3);
		
		menu1.add(item1);
		menu1.add(item2);
		menu1.add(item3);
		
		menu1.add(menu4);
		menu4.add(item4);
		menu4.add(item5);
		menu4.add(item6);
		//选项里面有多个选项
		frame.add(menuBar,BorderLayout.NORTH);
			
		FrameUtil.initFrame(frame, 300, 320);
	}

}

 FlowLayout流式布局

在JPanel中默认是流式布局：

public class ShowFlowLayout extends JFrame {

	public ShowFlowLayout() {
		super.setLayout(new FlowLayout(FlowLayout.LEFT, 10, 20));

		add(new JLabel("姓名:"));
		add(new JTextField(8));
		add(new JLabel("邮箱:"));
		add(new JTextField(8));
		add(new JLabel("电话:"));
		add(new JTextField(8));
		
	}

	public static void main(String[] args) {
		ShowFlowLayout frame = new ShowFlowLayout();
		frame.setTitle("FlowLayout");
		frame.setSize(500, 200);
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}

 GridLayout网格布局

public class ShowGridLayout extends JFrame {
	public ShowGridLayout() {
		setLayout(new GridLayout(3, 2, 5, 5));

		add(new JLabel("姓名:"));
		add(new JTextField(8));
		add(new JLabel("邮箱:"));
		add(new JTextField(8));
		add(new JLabel("电话:"));
		add(new JTextField(8));
	}

	public static void main(String[] args) {
		ShowGridLayout frame = new ShowGridLayout();
		frame.setTitle("GridLayout");
		frame.setSize(200, 125);
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}

 BorderLayout边框布局

public class ShowBorderLayout extends JFrame {
	public ShowBorderLayout() {
		setLayout(new BorderLayout(5, 10));

		add(new JButton("东"), BorderLayout.WEST);
		add(new JButton("西"), BorderLayout.EAST);
		add(new JButton("南"), BorderLayout.SOUTH);
		add(new JButton("北"), BorderLayout.NORTH);
		add(new JButton("中"), BorderLayout.CENTER);
	}

	public static void main(String[] args) {
		ShowBorderLayout frame = new ShowBorderLayout();
		frame.setTitle("BorderLayout");
		frame.setSize(300, 200);
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}

 事件

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;

public class ShowButton extends JFrame {
	public ShowButton() {
		JButton button = new JButton("点我");
		add(button);

		// 添加鼠标监听事件
		button.addActionListener(new ActionListener() {

			@Override
			public void actionPerformed(ActionEvent e) {
				System.out.println("按钮被点击");
				Object source = e.getSource();
				JButton button = (JButton) source;
				String text = button.getText();
				if ("按钮被点击".equals(text)) {
					button.setText("点我");
				} else {
					button.setText("按钮被点击");
				}
			}
		});
	}

	public static void main(String[] args) {
		ShowButton frame = new ShowButton();
		frame.setTitle("我的框架");
		frame.setSize(400, 200);
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}

 适配器

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;

public class AdapterDemo extends JFrame {
	AdapterDemo() {
		addWindowListener(new MyAdapter());
	}

	public static void main(String[] args) {
		AdapterDemo frame = new AdapterDemo();
		frame.setTitle("我的框架");
		frame.setSize(400, 200);
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}

	class MyAdapter extends WindowAdapter {
		public void windowActivated(WindowEvent e) {
			System.out.println("windowActivated....");
		}
	}

}