Swing编程

Swing编程（2学时）

一、实验目的与要求

1. Swing基本组件的用法

2. java7新增的Swing功能

3. 创建进度条

4. 使用JList、JComboBox创建列表框

 5. 创建树

6.使用JTable创建表格

二、实验原理

Java中使用AWT和Swing类来完成图形用户界面编程，其中AWT的全称是抽象窗口工具集，他是Sum最早提供的GUI库，这个GUI库提供了一些基本功能但这个GUI库功能有限，所以又提供了Swing库，通1. Swing基本组件的用法

过AWT和Swing提供的的图形界面组件库，java的图形用户界面非常简单，程序依次创建所需的图形组件，并以合适的方式将这些组件组织在一起，就可以开发出非常美观的用户界面。

三、预习与准备

1. Swing基本组件的用法

2. java7新增的Swing功能

3. 创建进度条

4. 使用JList、JComboBox创建列表框

 5. 创建树

6.使用JTable创建表格

四、实验内容

1. Swing基本组件的用法

2. java7新增的Swing功能

3. 创建进度条

4. 使用JList、JComboBox创建列表框

 5. 创建树

6.使用JTable创建表格

 

五、实验过程

1. Swing基本组件的用法   

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class SwingComponent

{

JFrame f = new JFrame("测试");

Icon okIcon = new ImageIcon("ico/ok.png");

JButton ok = new JButton("确认" , okIcon);

JRadioButton male = new JRadioButton("男" , true);

JRadioButton female = new JRadioButton("女" , false);

ButtonGroup bg = new ButtonGroup();

JCheckBox married = new JCheckBox("是否已婚？" , false);

String[] colors = new String[]{"红色" , "绿色"  , "蓝色"};

JComboBox<String> colorChooser = new JComboBox<>(colors);

JList<String> colorList = new JList<>(colors);

JTextArea ta = new JTextArea(8, 20);

JTextField name = new JTextField(40);

JMenuBar mb = new JMenuBar();

JMenu file = new JMenu("文件");

JMenu edit = new JMenu("编辑");

Icon newIcon = new ImageIcon("ico/new.png");

JMenuItem newItem = new JMenuItem("新建" , newIcon);

Icon saveIcon = new ImageIcon("ico/save.png");

JMenuItem saveItem = new JMenuItem("保存" , saveIcon);

Icon exitIcon = new ImageIcon("ico/exit.png");

JMenuItem exitItem = new JMenuItem("退出" , exitIcon);

JCheckBoxMenuItem autoWrap = new JCheckBoxMenuItem("自动换行");

JMenuItem copyItem = new JMenuItem("复制"

, new ImageIcon("ico/copy.png"));

JMenuItem pasteItem = new JMenuItem("粘贴"

, new ImageIcon("ico/paste.png"));

JMenu format = new JMenu("格式");

JMenuItem commentItem = new JMenuItem("注释");

JMenuItem cancelItem = new JMenuItem("取消注释");

JPopupMenu pop = new JPopupMenu();

ButtonGroup flavorGroup = new ButtonGroup();

JRadioButtonMenuItem metalItem = new JRadioButtonMenuItem("Metal风格" , true);

JRadioButtonMenuItem nimbusItem = new JRadioButtonMenuItem("Nimbus风格");

JRadioButtonMenuItem windowsItem = new JRadioButtonMenuItem("Windows风格");

JRadioButtonMenuItem classicItem = new JRadioButtonMenuItem("Windows经典风格");

JRadioButtonMenuItem motifItem = new JRadioButtonMenuItem("Motif风格");

public void init()

{

JPanel bottom = new JPanel();

bottom.add(name);

bottom.add(ok);

f.add(bottom , BorderLayout.SOUTH);

JPanel checkPanel = new JPanel();

checkPanel.add(colorChooser);

bg.add(male);

bg.add(female);

checkPanel.add(male);

checkPanel.add(female);

checkPanel.add(married);

Box topLeft = Box.createVerticalBox();

JScrollPane taJsp = new JScrollPane(ta);     

topLeft.add(taJsp);

topLeft.add(checkPanel);

Box top = Box.createHorizontalBox();

top.add(topLeft);

top.add(colorList);

f.add(top);

newItem.setAccelerator(KeyStroke.getKeyStroke('N'

, InputEvent.CTRL_MASK));    

newItem.addActionListener(e -> ta.append("用户单击了“新建”菜单\n"));

file.add(newItem);

file.add(saveItem);

file.add(exitItem);

edit.add(autoWrap);

edit.addSeparator();

edit.add(copyItem);

edit.add(pasteItem);

commentItem.setToolTipText("将程序代码注释起来！");

format.add(commentItem);

format.add(cancelItem);

edit.add(new JMenuItem("-"));

edit.add(format);

mb.add(file);

mb.add(edit);

f.setJMenuBar(mb);

flavorGroup.add(metalItem);

flavorGroup.add(nimbusItem);

flavorGroup.add(windowsItem);

flavorGroup.add(classicItem);

flavorGroup.add(motifItem);

pop.add(metalItem);

pop.add(nimbusItem);

pop.add(windowsItem);

pop.add(classicItem);

pop.add(motifItem);

ActionListener flavorListener = e -> {

try

{

switch(e.getActionCommand())

{

case "Metal风格":

changeFlavor(1);

break;

case "Nimbus风格":

changeFlavor(2);

break;

case "Windows风格":

changeFlavor(3);

break;

case "Windows经典风格":

changeFlavor(4);

break;

case "Motif风格":

changeFlavor(5);

break;

}

}

catch (Exception ee)

{

ee.printStackTrace();

}

};

metalItem.addActionListener(flavorListener);

nimbusItem.addActionListener(flavorListener);

windowsItem.addActionListener(flavorListener);

classicItem.addActionListener(flavorListener);

motifItem.addActionListener(flavorListener);

ta.setComponentPopupMenu(pop);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f.pack();

f.setVisible(true);

}

private void changeFlavor(int flavor)throws Exception

{

switch (flavor)

{

case 1:

UIManager.setLookAndFeel(

"javax.swing.plaf.metal.MetalLookAndFeel");

break;

case 2:

UIManager.setLookAndFeel(

"javax.swing.plaf.nimbus.NimbusLookAndFeel");

break;

case 3:

UIManager.setLookAndFeel(

"com.sun.java.swing.plaf.windows.WindowsLookAndFeel");

break;

case 4:

UIManager.setLookAndFeel(

"com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel");

break;

case 5:

UIManager.setLookAndFeel(

"com.sun.java.swing.plaf.motif.MotifLookAndFeel");

break;

}

SwingUtilities.updateComponentTreeUI(f.getContentPane());  

SwingUtilities.updateComponentTreeUI(mb);

SwingUtilities.updateComponentTreeUI(pop);

}

public static void main(String[] args)

{

new SwingComponent().init();

}

}

 

 

import java.awt.*;

import java.awt.event.*;

import java.awt.datatransfer.*;

import javax.swing.*;

public class JToolBarTest

{

JFrame jf = new JFrame("测试工具条");

JTextArea jta = new JTextArea(6, 35);

JToolBar jtb = new JToolBar();

JMenuBar jmb = new JMenuBar();

Clipboard clipboard = Toolkit.getDefaultToolkit()

.getSystemClipboard();

Action pasteAction = new AbstractAction("粘贴"

, new ImageIcon("ico/paste.png"))

{

public void actionPerformed(ActionEvent e)

{

if (clipboard.isDataFlavorAvailable(DataFlavor.stringFlavor))

{

try

{

String content = (String)clipboard.getData

(DataFlavor.stringFlavor);

jta.replaceRange(content , jta.getSelectionStart()

, jta.getSelectionEnd());

}

catch (Exception ee)

{

ee.printStackTrace();

}

}

}

};

Action copyAction = new AbstractAction("复制"

, new ImageIcon("ico/copy.png"))

{

public void actionPerformed(ActionEvent e)

{

StringSelection contents = new StringSelection(

jta.getSelectedText());

clipboard.setContents(contents, null);

if (clipboard.isDataFlavorAvailable(DataFlavor.stringFlavor))

{

pasteAction.setEnabled(true);

}

}

};

public void init()

{

pasteAction.setEnabled(false);   // ①

jf.add(new JScrollPane(jta));

JButton copyBn = new JButton(copyAction);

JButton pasteBn = new JButton(pasteAction);

JPanel jp = new JPanel();

jp.add(copyBn);

jp.add(pasteBn);

jf.add(jp , BorderLayout.SOUTH);

jtb.add(copyAction);

jtb.addSeparator();

jtb.add(pasteAction);

edit.add(copyAction);

edit.add(pasteAction);

jmb.add(edit);

jf.setJMenuBar(jmb);

jtb.setMargin(new Insets(20 ,10 , 5 , 30));    

jf.add(jtb , BorderLayout.NORTH);

jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

jf.pack();

jf.setVisible(true);

}

public static void main(String[] args)

{

new JToolBarTest().init();

}

}

2. java7新增的Swing功能

import java.beans.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.image.*;

import javax.swing.*;

import javax.swing.plaf.LayerUI;

import java.awt.geom.Point2D;

class FirstLayerUI extends LayerUI<JComponent>

{

public void paint(Graphics g, JComponent c)

{

super.paint(g, c);

Graphics2D g2 = (Graphics2D) g.create();

g2.setComposite(AlphaComposite.getInstance(

AlphaComposite.SRC_OVER, .5f));

g2.setPaint(new GradientPaint(0 , 0 , Color.RED

, 0 , c.getHeight() , Color.BLUE));

g2.fillRect(0, 0, c.getWidth(), c.getHeight());    

g2.dispose();

}

}

class BlurLayerUI extends LayerUI<JComponent>

{

private BufferedImage screenBlurImage;

private BufferedImageOp operation;

public BlurLayerUI()

{

float ninth = 1.0f / 9.0f;

float[] blurKernel = {

ninth, ninth, ninth,

ninth, ninth, ninth,

ninth, ninth, ninth

};

operation = new ConvolveOp(

new Kernel(3, 3, blurKernel),

ConvolveOp.EDGE_NO_OP, null);

}

public void paint(Graphics g, JComponent c)

{

int w = c.getWidth();

int h = c.getHeight();

if (w == 0 || h == 0)

return;

if (screenBlurImage == null

|| screenBlurImage.getWidth() != w

|| screenBlurImage.getHeight() != h)

{

screenBlurImage = new BufferedImage(w

, h , BufferedImage.TYPE_INT_RGB);

}

Graphics2D ig2 = screenBlurImage.createGraphics();

ig2.setClip(g.getClip());

super.paint(ig2, c);

ig2.dispose();

Graphics2D g2 = (Graphics2D)g;

g2.drawImage(screenBlurImage, operation, 0, 0);

}

}

class SpotlightLayerUI extends LayerUI<JComponent>

{

private boolean active;

private int cx, cy;

 

public void installUI(JComponent c)

{

super.installUI(c);

JLayer layer = (JLayer)c;

layer.setLayerEventMask(AWTEvent.MOUSE_EVENT_MASK

| AWTEvent.MOUSE_MOTION_EVENT_MASK);

}

public void uninstallUI(JComponent c)

{

JLayer layer = (JLayer)c;

layer.setLayerEventMask(0);

super.uninstallUI(c);

}

public void paint(Graphics g, JComponent c)

{

Graphics2D g2 = (Graphics2D)g.create();

super.paint (g2, c);

if (active)

{

Point2D center = new Point2D.Float(cx, cy);

float radius = 72;

float[] dist = {0.0f, 1.0f};

Color[] colors = {Color.YELLOW , Color.BLACK};

RadialGradientPaint p = new RadialGradientPaint(center

, radius , dist , colors);

g2.setPaint(p);

g2.setComposite(AlphaComposite.getInstance(

AlphaComposite.SRC_OVER, .6f));

g2.fillRect(0, 0, c.getWidth(), c.getHeight());

}

g2.dispose();

}

public void processMouseEvent(MouseEvent e, JLayer layer)

{

if (e.getID() == MouseEvent.MOUSE_ENTERED)

active = true;

if (e.getID() == MouseEvent.MOUSE_EXITED)

active = false;

layer.repaint();

}

public void processMouseMotionEvent(MouseEvent e, JLayer layer)

{

Point p = SwingUtilities.convertPoint(

e.getComponent(), e.getPoint(), layer);

cx = p.x;

cy = p.y;

layer.repaint();

}

}

public class JLayerTest

{

public void init()

{

JFrame f = new JFrame("JLayer测试");

JPanel p = new JPanel();

ButtonGroup group = new ButtonGroup();

JRadioButton radioButton;

p.add(radioButton = new JRadioButton("网购购买", true));

group.add(radioButton);

p.add(radioButton = new JRadioButton("书店购买"));

group.add(radioButton);

p.add(radioButton = new JRadioButton("图书馆借阅"));

group.add(radioButton);

p.add(new JCheckBox("疯狂Java讲义"));

p.add(new JCheckBox("疯狂Android讲义"));

p.add(new JCheckBox("疯狂Ajax讲义"));

p.add(new JCheckBox("轻量级Java EE企业应用"));

JButton orderButton = new JButton("投票");

p.add(orderButton);

LayerUI<JComponent> layerUI = new SpotlightLayerUI();     

JLayer<JComponent> layer = new JLayer<JComponent>(p, layerUI);

f.add(layer);

f.setSize(300, 170);

f.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

f.setVisible (true);

}

public static void main(String[] args)

{

new JLayerTest().init();

}

}

 

 

import java.beans.*;

import java.awt.*;

import java.awt.event.*;

import java.awt.image.*;

import javax.swing.*;

import javax.swing.plaf.LayerUI;

class WaitingLayerUI extends LayerUI<JComponent>

{

private boolean isRunning;

private Timer timer;

private int angle;      

public void paint(Graphics g, JComponent c)

{

super.paint(g, c);

int w = c.getWidth();

int h = c.getHeight();

if (!isRunning)

return;

Graphics2D g2 = (Graphics2D)g.create();

Composite urComposite = g2.getComposite();

g2.setComposite(AlphaComposite.getInstance(

AlphaComposite.SRC_OVER, .5f));

g2.fillRect(0, 0, w, h);

g2.setComposite(urComposite);

int s = Math.min(w , h) / 5;

int cx = w / 2;

int cy = h / 2;

g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING

, RenderingHints.VALUE_ANTIALIAS_ON);

g2.setStroke( new BasicStroke(s / 2

, BasicStroke.CAP_ROUND , BasicStroke.JOIN_ROUND));

g2.setPaint(Color.BLUE);

g2.rotate(Math.PI * angle / 180, cx, cy);

for (int i = 0; i < 12; i++)

{

float scale = (11.0f - (float)i) / 11.0f;

g2.drawLine(cx + s, cy, cx + s * 2, cy);

g2.rotate(-Math.PI / 6, cx, cy);

g2.setComposite(AlphaComposite.getInstance(

AlphaComposite.SRC_OVER, scale));

}

g2.dispose();

}

public void start()

{

if (isRunning)

return;

isRunning = true;

timer = new Timer(100, e -> {

if (isRunning)

{

firePropertyChange("crazyitFlag", 0 , 1);

angle += 6;      

if (angle >= 360)

angle = 0;

}

});

timer.start();

}

public void stop()

{

isRunning = false;

firePropertyChange("crazyitFlag", 0 , 1);

timer.stop();

}

public void applyPropertyChange(PropertyChangeEvent pce

, JLayer layer)

{

if (pce.getPropertyName().equals("crazyitFlag"))

{

layer.repaint();

}

}

}

public class WaitingJLayerTest

{

public void init()

{

JFrame f = new JFrame("转动的“齿轮”");

JPanel p = new JPanel();

ButtonGroup group = new ButtonGroup();

JRadioButton radioButton;

p.add(radioButton = new JRadioButton("网购购买", true));

group.add(radioButton);

p.add(radioButton = new JRadioButton("书店购买"));

group.add(radioButton);

p.add(radioButton = new JRadioButton("图书馆借阅"));

group.add(radioButton);

p.add(new JCheckBox("疯狂Java讲义"));

p.add(new JCheckBox("疯狂Android讲义"));

p.add(new JCheckBox("疯狂Ajax讲义"));

p.add(new JCheckBox("轻量级Java EE企业应用"));

JButton orderButton = new JButton("投票");

p.add(orderButton);

final WaitingLayerUI layerUI = new WaitingLayerUI();

JLayer<JComponent> layer = new JLayer<JComponent>(p, layerUI);

final Timer stopper = new Timer(4000, ae -> layerUI.stop());

stopper.setRepeats(false);

orderButton.addActionListener(ae -> {

layerUI.start();

if (!stopper.isRunning())

{

stopper.start();

}

});

f.add(layer);

f.setSize(300, 170);

f.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

f.setVisible (true);

}

public static void main(String[] args)

{

new WaitingJLayerTest().init();

}

}

3. 创建进度条

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class JProgressBarTest

{

JFrame frame = new JFrame("测试进度条");

JProgressBar bar = new JProgressBar(JProgressBar.VERTICAL );

JCheckBox indeterminate = new JCheckBox("不确定进度");

JCheckBox noBorder = new JCheckBox("不绘制边框");

public void init()

{

Box box = new Box(BoxLayout.Y_AXIS);

box.add(indeterminate);

box.add(noBorder);

frame.setLayout(new FlowLayout());

frame.add(box);

frame.add(bar);

bar.setMinimum(0);

bar.setMaximum(100);

bar.setStringPainted(true);

noBorder.addActionListener(event ->

bar.setBorderPainted(!noBorder.isSelected()));

indeterminate.addActionListener(event -> {

bar.setIndeterminate(indeterminate.isSelected());

bar.setStringPainted(!indeterminate.isSelected());

});

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.pack();

frame.setVisible(true);

for (int i = 0 ; i <= 100 ; i++)

{

bar.setValue(i);

try

{

Thread.sleep(100);

}

catch (Exception e)

{

e.printStackTrace();

}

}

}

public static void main(String[] args)

{

new JProgressBarTest().init();

}

}

4. 使用JList、JComboBox创建列表框

import java.util.*;

import java.awt.BorderLayout;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.border.*;

import javax.swing.event.*;

public class ListTest

{

private JFrame mainWin = new JFrame("测试列表框");

String[] books = new String[]

{

"疯狂Java讲义"

, "轻量级Java EE企业应用实战"

, "疯狂Android讲义"

, "疯狂Ajax讲义"

, "经典Java EE企业应用实战"

};

JList<String> bookList = new JList<>(books);

JComboBox<String> bookSelector;

JPanel layoutPanel = new JPanel();

ButtonGroup layoutGroup = new ButtonGroup();

JPanel selectModePanel = new JPanel();

ButtonGroup selectModeGroup = new ButtonGroup();

JTextArea favoriate = new JTextArea(4 , 40);

public void init()

{

bookList.setVisibleRowCount(3);

bookList.setSelectionInterval(2, 4);

addLayoutButton("纵向滚动", JList.VERTICAL);

addLayoutButton("纵向换行", JList.VERTICAL_WRAP);

addLayoutButton("横向换行", JList.HORIZONTAL_WRAP);

addSelectModelButton("无限制", ListSelectionModel

.MULTIPLE_INTERVAL_SELECTION);

addSelectModelButton("单选", ListSelectionModel

.SINGLE_SELECTION);

addSelectModelButton("单范围", ListSelectionModel

.SINGLE_INTERVAL_SELECTION);

Box listBox = new Box(BoxLayout.Y_AXIS);

listBox.add(new JScrollPane(bookList));

listBox.add(layoutPanel);

listBox.add(selectModePanel);

bookList.addListSelectionListener(e -> {  

List<String> books = bookList.getSelectedValuesList();

favoriate.setText("");

for (String book : books )

{

favoriate.append(book + "\n");

}

});

Vector<String> bookCollection = new Vector<>();

bookCollection.add("疯狂Java讲义");

bookCollection.add("轻量级Java EE企业应用实战");

bookCollection.add("疯狂Android讲义");

bookCollection.add("疯狂Ajax讲义");

bookCollection.add("经典Java EE企业应用实战");

bookSelector = new JComboBox<>(bookCollection);

bookSelector.addItemListener(e -> {  

Object book = bookSelector.getSelectedItem();

favoriate.setText(book.toString());

});

bookSelector.setEditable(true);

bookSelector.setMaximumRowCount(4);

JPanel p = new JPanel();

p.add(bookSelector);

Box box = new Box(BoxLayout.X_AXIS);

box.add(listBox);

box.add(p);

mainWin.add(box);

JPanel favoriatePanel = new JPanel();

favoriatePanel.setLayout(new BorderLayout());

favoriatePanel.add(new JScrollPane(favoriate));

favoriatePanel.add(new JLabel("您喜欢的图书：")

, BorderLayout.NORTH);

mainWin.add(favoriatePanel , BorderLayout.SOUTH);

mainWin.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

mainWin.pack();

mainWin.setVisible(true);

}

private void addLayoutButton(String label, final int orientation)

{

layoutPanel.setBorder(new TitledBorder(new EtchedBorder()

, "确定选项布局"));

JRadioButton button = new JRadioButton(label);

layoutPanel.add(button);

if (layoutGroup.getButtonCount() == 0)

button.setSelected(true);

layoutGroup.add(button);

button.addActionListener(event ->

bookList.setLayoutOrientation(orientation));

}

private void addSelectModelButton(String label, final int selectModel)

{

selectModePanel.setBorder(new TitledBorder(new EtchedBorder()

, "确定选择模式"));

JRadioButton button = new JRadioButton(label);

selectModePanel.add(button);

if(selectModeGroup.getButtonCount() == 0)

button.setSelected(true);

selectModeGroup.add(button);

button.addActionListener(event ->

bookList.setSelectionMode(selectModel));

}

public static void main(String[] args)

{

new ListTest().init();

}

}

 5. 创建树

import java.awt.BorderLayout;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.tree.*;

public class EditJTree

{

JFrame jf;

JTree tree;

DefaultTreeModel model;

DefaultMutableTreeNode root = new DefaultMutableTreeNode("中国");

DefaultMutableTreeNode guangdong = new DefaultMutableTreeNode("广东");

DefaultMutableTreeNode guangxi = new DefaultMutableTreeNode("广西");

DefaultMutableTreeNode foshan = new DefaultMutableTreeNode("佛山");

DefaultMutableTreeNode shantou = new DefaultMutableTreeNode("汕头");

DefaultMutableTreeNode guilin = new DefaultMutableTreeNode("桂林");

DefaultMutableTreeNode nanning = new DefaultMutableTreeNode("南宁");

TreePath movePath;

JButton addSiblingButton = new JButton("添加兄弟节点");

JButton addChildButton = new JButton("添加子节点");

JButton deleteButton = new JButton("删除节点");

JButton editButton = new JButton("编辑当前节点");

public void init()

{

guangdong.add(foshan);

guangdong.add(shantou);

guangxi.add(guilin);

guangxi.add(nanning);

root.add(guangdong);

root.add(guangxi);

jf = new JFrame("可编辑节点的树");

tree = new JTree(root);

model = (DefaultTreeModel)tree.getModel();

tree.setEditable(true);

MouseListener ml = new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

TreePath tp = tree.getPathForLocation(

e.getX() , e.getY());

if (tp != null)

{

movePath = tp;

}

}

public void mouseReleased(MouseEvent e)

{

TreePath tp = tree.getPathForLocation(

e.getX(), e.getY());

if (tp != null && movePath != null)

{

if (movePath.isDescendant(tp) && movePath != tp)

{

JOptionPane.showMessageDialog(jf,

"目标节点是被移动节点的子节点，无法移动！","非法操作", JOptionPane.ERROR_MESSAGE );

return;

}

else if (movePath != tp)

{

((DefaultMutableTreeNode)tp.getLastPathComponent())

.add((DefaultMutableTreeNode)movePath

.getLastPathComponent());

movePath = null;

tree.updateUI();

}

}

}

};

tree.addMouseListener(ml);

JPanel panel = new JPanel();

addSiblingButton.addActionListener(event -> {

DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode)

tree.getLastSelectedPathComponent();

if (selectedNode == null) return;

DefaultMutableTreeNode parent = (DefaultMutableTreeNode)

selectedNode.getParent();

if (parent == null) return;

DefaultMutableTreeNode newNode = new

DefaultMutableTreeNode("新节点");

int selectedIndex = parent.getIndex(selectedNode);

model.insertNodeInto(newNode, parent, selectedIndex + 1);

TreeNode[] nodes = model.getPathToRoot(newNode);

TreePath path = new TreePath(nodes);

tree.scrollPathToVisible(path);

});

panel.add(addSiblingButton);

addChildButton.addActionListener(event -> {

DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode)

tree.getLastSelectedPathComponent();

if (selectedNode == null) return;

DefaultMutableTreeNode newNode = new

DefaultMutableTreeNode("新节点");

selectedNode.add(newNode);

TreeNode[] nodes = model.getPathToRoot(newNode);

TreePath path = new TreePath(nodes);

tree.scrollPathToVisible(path);

tree.updateUI();

});

panel.add(addChildButton);

deleteButton.addActionListener(event -> {

DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode)

tree.getLastSelectedPathComponent();

if (selectedNode != null && selectedNode.getParent() != null)

{

model.removeNodeFromParent(selectedNode);

}

});

panel.add(deleteButton);

editButton.addActionListener(event -> {

TreePath selectedPath = tree.getSelectionPath();

if (selectedPath != null)

{

tree.startEditingAtPath(selectedPath);

}

});

panel.add(editButton);

jf.add(new JScrollPane(tree));

jf.add(panel , BorderLayout.SOUTH);

jf.pack();

jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

jf.setVisible(true);

}

public static void main(String[] args)

{

new EditJTree().init();

}

}

6. 使用JTable创建表格

import javax.swing.*;

public class SimpleTable

{

JFrame jf = new JFrame("简单表格");

JTable table;

Object[][] tableData =

{

new Object[]{"李清照" , 29 , "女"},

new Object[]{"苏格拉底", 56 , "男"},

new Object[]{"李白", 35 , "男"},

new Object[]{"弄玉", 18 , "女"},

new Object[]{"虎头" , 2 , "男"}

};

Object[] columnTitle = {"姓名" , "年龄" , "性别"};

public void init()

{

table = new JTable(tableData , columnTitle);

jf.add(new JScrollPane(table));

jf.pack();

jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

jf.setVisible(true);

}

public static void main(String[] args)

{

new SimpleTable().init();

}

}

六、实验效果

1. Swing基本组件的用法

 

 

 

2. java7新增的Swing功能

 

 

3. 创建进度条

 

4. 使用JList、JComboBox创建列表框

 

 5. 创建树

 

6.使用JTable创建表格

 

 

 

七、实验总结与体会

     通过这次课的学习，初步掌握了java中Swing的基本用法和一些常用的方法，也发现了自身的一些问题，比如不注重细节，导致程序无法运行，同时也发现要与同学进行交流与合作，及时发现问题并解决问题，也使自己了解到自身的不足，所以在今后的学习中，要更加认真学习，并多与同学和老师交流，这样能够更好的学好Java，同时我们要多敲代码，只有这样，我们才能熟悉代码，做到熟能生巧，才能更好的学好java，敲好java代码。