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 stubsetTitle("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JFrameimport 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);}}