java语言程序设计基础篇第八英文学习教案

1、会计学1java语言语言(yyn)程序设计基础篇第八英文程序设计基础篇第八英文第一页，共39页。2第1页/共39页第二页，共39页。3第2页/共39页第三页，共39页。4ButtonLabelText fieldCheck BoxRadio ButtonCombo Box第3页/共39页第四页，共39页。specific components through their respective agents, known as peers. AWT is fine for developing simple graphical user interfaces, but not for devel

2、oping comprehensive GUI projects. Besides, AWT is prone to platform-specific bugs because its peer-based approach relies heavily on the underlying platform. With the release of Java 2, the AWT user-interface components were replaced by a more robust, versatile, and flexible library known as Swing co

3、mponents. Swing components are painted directly on canvases using Java code, except for components that are subclasses of java.awt.Window or java.awt.Panel, which must be drawn using native GUI on a specific platform. Swing components are less dependent on the target platform and use less of the nat

4、ive GUI resource. For this reason, Swing components that dont rely on native GUI are referred to as lightweight components, and AWT components are referred to as heavyweight components. 5第4页/共39页第五页，共39页。6 Dimension Font FontMetrics Component Graphics Object Color Container Panel Applet Frame Dialog

5、 Window JComponent JApplet JFrame JDialog Swing Components in the javax.swing package Lightweight Heavyweight Classes in the java.awt package 1 LayoutManager * 第5页/共39页第六页，共39页。7 Dimension Font FontMetrics Component Graphics Object Color Container Panel Applet Frame Dialog Window JComponent JApplet

6、JFrame JDialog Swing Components in the javax.swing package Lightweight Heavyweight Classes in the java.awt package 1 LayoutManager * JPanel Container classes can contain other GUI components.第6页/共39页第七页，共39页。8 Dimension Font FontMetrics Component Graphics Object Color Container Panel Applet Frame Di

7、alog Window JComponent JApplet JFrame JDialog Swing Components in the javax.swing package Lightweight Heavyweight Classes in the java.awt package 1 LayoutManager * JPanel The helper classes are not subclasses of Component. They are used to describe the properties of GUI components such as graphics c

8、ontext, colors, fonts, and dimension.第7页/共39页第八页，共39页。9 JMenuItem JCheckBoxMenuItem AbstractButton JComponent JMenu JRadioButtonMenuItem JToggleButton JCheckBox JRadioButton JComboBox JInternalFrame JLayeredPane JList JMenuBar JOptionPane JPopupMenu JProgressBar JFileChooser JScrollBar JScrollPane J

9、Separator JSplitPane JSlider JTabbedPane JTable JTableHeader JTextField JTextComponent JTextArea JToolBar JToolTip JTree JRootPane JPanel JPasswordField JColorChooser JLabel JEditorPane JSpinner JButton 第8页/共39页第九页，共39页。10 JMenuItem JCheckBoxMenuItem AbstractButton JComponent JMenu JRadioButtonMenuI

10、tem JToggleButton JCheckBox JRadioButton JComboBox JInternalFrame JLayeredPane JList JMenuBar JOptionPane JPopupMenu JProgressBar JFileChooser JScrollBar JScrollPane JSeparator JSplitPane JSlider JTabbedPane JTable JTableHeader JTextField JTextComponent JTextArea JToolBar JToolTip JTree JRootPane JP

11、anel JPasswordField JColorChooser JLabel JEditorPane JSpinner JButton 第9页/共39页第十页，共39页。11 JMenuItem JCheckBoxMenuItem AbstractButton JComponent JMenu JRadioButtonMenuItem JToggleButton JCheckBox JRadioButton JComboBox JInternalFrame JLayeredPane JList JMenuBar JOptionPane JPopupMenu JProgressBar JFi

12、leChooser JScrollBar JScrollPane JSeparator JSplitPane JSlider JTabbedPane JTable JTableHeader JTextField JTextComponent JTextArea JToolBar JToolTip JTree JRootPane JPanel JPasswordField JColorChooser JLabel JEditorPane JSpinner JButton 第10页/共39页第十一页，共39页。12AWTEventFontFontMetricsComponentGraphicsOb

13、jectColorCanvasButtonTextComponentLabelListCheckBoxGroupCheckBoxChoiceContainerPanelAppletFrameDialogFileDialogWindowTextFieldTextAreaMenuComponentMenuItemMenuBarMenuScrollbarLayoutManager第11页/共39页第十二页，共39页。13第12页/共39页第十三页，共39页。14Runimport javax.swing.*;public class MyFrame public static void main(S

14、tring args) JFrame frame = new JFrame(Test Frame); frame.setSize(400, 300); frame.setVisible(true); frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE); MyFrame第13页/共39页第十四页，共39页。15/ Add a button into the frameframe.getContentPane().add( new JButton(OK);RunMyFrameWithComponentsTitle barContent pan

15、e第14页/共39页第十五页，共39页。16/ Add a button into the frameframe.getContentPane().add( new JButton(OK);Title barContent pane/ Add a button into the frameframe.add( new JButton(OK);第15页/共39页第十六页，共39页。17 javax.swing.JFrame +JFrame() +JFrame(title: String) +setSize(width: int, height: int): void +setLocation(x

16、: int, y: int): void +setVisible(visible: boolean): void +setDefaultCloseOperation(mode: int): void +setLocationRelativeTo(c: Component): void +pack(): void Creates a default frame with no title. Creates a frame with the specified title. Specifies the size of the frame. Specifies the upper-left corn

17、er location of the frame. Sets true to display the frame. Specifies the operation when the frame is closed. Sets the location of the frame relative to the specified component. If the component is null, the frame is centered on the screen. Automatically sets the frame size to hold the components in t

18、he frame. 第16页/共39页第十七页，共39页。18第17页/共39页第十八页，共39页。19第18页/共39页第十九页，共39页。20ShowFlowLayoutRun第19页/共39页第二十页，共39页。21 java.awt.FlowLayout -alignment: int -hgap: int -vgap: int +FlowLayout() +FlowLayout(alignment: int) +FlowLayout(alignment: int, hgap: int, vgap: int) The alignment of this layout manager (

19、default: CENTER). The horizontal gap of this layout manager (default: 5 pixels). The vertical gap of this layout manager (default: 5 pixels). Creates a default FlowLayout manager. Creates a FlowLayout manager with a specified alignment. Creates a FlowLayout manager with a specified alignment, horizo

20、ntal gap, and vertical gap. The get and set methods for these data fields are provided in the class, but omitted in the UML diagram for brevity. 第20页/共39页第二十一页，共39页。22ShowGridLayoutRun第21页/共39页第二十二页，共39页。23 java.awt.GridLayout -rows: int -columns: int -hgap: int -vgap: int +GridLayout() +GridLayout(

21、rows: int, columns: int) +GridLayout(rows: int, columns: int, hgap: int, vgap: int) The number of rows in this layout manager (default: 1). The number of columns in this layout manager (default: 1). The horizontal gap of this layout manager (default: 0). The vertical gap of this layout manager (defa

22、ult: 0). Creates a default GridLayout manager. Creates a GridLayout with a specified number of rows and columns. Creates a GridLayout manager with a specified number of rows and columns, horizontal gap, and vertical gap. The get and set methods for these data fields are provided in the class, but om

23、itted in the UML diagram for brevity. 第22页/共39页第二十三页，共39页。24add(Component, constraint), where constraint is BorderLayout.EAST, BorderLayout.SOUTH, BorderLayout.WEST, BorderLayout.NORTH, or BorderLayout.CENTER. 第23页/共39页第二十四页，共39页。25ShowBorderLayoutRun第24页/共39页第二十五页，共39页。26 java.awt.BorderLayout -hga

24、p: int -vgap: int +BorderLayout() +BorderLayout(hgap: int, vgap: int) The horizontal gap of this layout manager (default: 0). The vertical gap of this layout manager (default: 0). Creates a default BorderLayout manager. Creates a BorderLayout manager with a specified number of horizontal gap, and ve

25、rtical gap. The get and set methods for these data fields are provided in the class, but omitted in the UML diagram for brevity. 第25页/共39页第二十六页，共39页。27第26页/共39页第二十七页，共39页。28第27页/共39页第二十八页，共39页。29第28页/共39页第二十九页，共39页。30Font NamesStandard font names that are supported in all platforms are: SansSerif, S

26、erif, Monospaced, Dialog, or DialogInput.Font StyleFont.PLAIN (0), Font.BOLD (1), Font.ITALIC (2), and Font.BOLD + Font.ITALIC (3)第29页/共39页第三十页，共39页。31第30页/共39页第三十一页，共39页。32第31页/共39页第三十二页，共39页。33第32页/共39页第三十三页，共39页。34TestPanelsRun A button A textfield 12 buttons frame p2 p1 第33页/共39页第三十四页，共39页。35 ja

27、va.awt.Container +add(comp: Component): Component +add(comp: Component, index: int): Component +remove(comp: Component): void +getLayout(): LayoutManager +setLayout(l: LayoutManager): void +paintComponents(g: Graphics): void Adds a component to the container. Adds a component to the container with t

28、he specified index. Removes the component from the container. Returns the layout manager for this container. Sets the layout manager for this container. Paints each of the components in this container. java.awt.Component -font: java.awt.Font -background: java.awt.Color -foreground: java.awt.Color -preferredSize: Dimension -visible: boolean +getWidth(): int +getHeight(): int +getX(): int +getY(): int The font of this component. The background color of this component. The fo