java学习值swing编程 (二)

本篇主要练习JPanel,JScrollPane,JLabel控件的使用。


JPanel面板的使用

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;



//面板也是一个swing容器,可以容纳其它控件,但必须添加到其它容器中才能发挥作用,如添加到窗体控件容器中

public class MyJPanel extends JFrame{

	private static final long serialVersionUID = 3932481269635344760L;
	private JPanel content;

	public static void main(String[] args) {
		MyJPanel myjp = new MyJPanel();
		myjp.setVisible(true);
		
	}
	
	public MyJPanel() {
		// TODO Auto-generated constructor stub
		setTitle("面板使用");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 250, 200);
		
		content = new JPanel();
		content.setBorder(new EmptyBorder(5, 5, 5, 5));
		
		setContentPane(content);// 应用内容面板 
		
		JPanel jp1 = new JPanel();
		content.add(jp1);
		jp1.add(new JButton("A"));
		jp1.add(new JButton("B"));
		jp1.add(new JButton("C"));
		
		JPanel jp2 = new JPanel();
		content.add(jp2);
		jp2.add(new JButton("D"));
		jp2.add(new JButton("E"));
		jp2.add(new JButton("F"));
		
		JPanel jp3 = new JPanel();
		content.add(jp3);
		jp3.add(new JButton("D"));
		jp3.add(new JButton("E"));
		jp3.add(new JButton("F"));			
	}
}


java常用的基本控件,容器,菜单控件如下:

 Swing Container:  JFrame, JPanel, JScrollPane , JSplitPane, JTabeledPane ,JDesktopPane, JInternalFrame ,JDialog, JWindow, JToolBar, JApplet

 Swing Component: JButton, JCheckBox, JRadioButton, JToggleButton ,JLabel, JTextField, JPasswordField, JTextArea ,JSlider, JScrollBar, JList, JComboBox, JTree 
                                     JTableOnJScrollPane, JTable, TableColumn , JOptionPage, JTextPane, JEditorPane

 Swing Menw: JMenuBar, JMenu, JPopupItem, JCheckBoxMenuItem, JRadioButtonMenuItem

 AWT controls:Frame, Applet, Dialog, Window, Panel, ScrollPane, Button, Label, ChekcBox , Choice, List, ScrollBar, TextField, TextArea


滚动面板JScrollPane的使用

import java.awt.BorderLayout;

import javax.swing.JFrame;

//JPanel面板本身作为一个容器,可以聚集一些控件进行布局,
//但也必须添加到其它容器中才能发挥作用,如窗体控件JFrame
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.border.EmptyBorder;


public class MyJScrollPane extends JFrame {

	private JPanel content;
	
	private static final long serialVersionUID = 6788676512883612630L;
	
	public static void main(String[] args) {
		MyJScrollPane myJsp = new MyJScrollPane();
		myJsp.setVisible(true);
	}

	MyJScrollPane(){
		setTitle("滚动面板使用");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100,100,250,200);
		
		
		content = new JPanel();// 创建全局内容面板
		content.setBorder(new EmptyBorder(5, 5, 5, 5));
		content.setLayout(new BorderLayout(0, 0)); // 设置布局模式
		setContentPane(content);// 应用布局管理
		
		JScrollPane jsp = new JScrollPane();
		
		// 将滚动面板添加到全局内容面板中,并放置到正中间件
		content.add(jsp,BorderLayout.CENTER); 
		JTextArea textArea = new JTextArea();// 创建文本域控件
		jsp.setViewportView(textArea);		// 设置滚动面板中显示文本域
	}
}

标签控件JLabel的使用

import java.awt.BorderLayout;

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


public class MyLabel extends JFrame{

	private static final long serialVersionUID = -6835211007654215677L;

	public static void main(String[] args) {
		MyLabel myJl = new MyLabel();
		myJl.setVisible(true);
	}

	private JPanel contentPane;
	
	MyLabel(){
		setTitle("标签栏的使用");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5,5,5,5));
		contentPane.setBounds(100, 100, 250, 100);
		contentPane.setLayout(new BorderLayout(0, 0));
		
		setContentPane(contentPane);//  应用内容面板
		JLabel jl = new JLabel("广东省深圳市Company-X");
		// 工程bin/imgage目录下的icon.ipg图片
		jl.setIcon(new ImageIcon(MyLabel.class.getResource("/image/icon.jpg")));
		contentPane.add(jl,BorderLayout.CENTER);
	}
}





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