但是, 如果想重新计算一个 JFrame 中的所有组件, 就必须调用 validate 方法 JFrame 没有扩展 JComponent。 通常情况下,希望用户在文本域中键入文本(或者编辑已经存在的文本)。文本域一般初 始为空白。只要不为 JTextField 构造器提供字符串参数,就可以构造一个空白文本域: AI检测代码解析 JTextField textField = ne...
首先, 像 JFrame 这样的顶层窗口 是 Container 的子类, 所以也是 Component 的子类, 但却不能放在其他容器内。 另外, JComponent 是 Container 的子类, 但不直接继承 Component, 因此, 可以将其他组件添 置到 JButton 中。(但无论如何, 这些组件无法显示出来)。每个容器都有一个默认的布局管理器,但可以重新进...
1 package com.sy.swing; 2 3 import java.awt.*; 4 import java.awt.event.*; 5 import javax.swing.*; 6 7 public class JRadioButtonTest extends JFrame { 8 9 /** 10 * Launch the application. 11 */ 12 public static void main(String[] args) { 13 EventQueue.invokeLater(new Runnable(...
packageorg.plx.jtable;importjava.awt.Dimension;importjava.awt.GridLayout;importjavax.swing.DefaultCellEditor;importjavax.swing.JComboBox;importjavax.swing.JFrame;importjavax.swing.JPanel;importjavax.swing.JScrollPane;importjavax.swing.JTable;importjavax.swing.table.AbstractTableModel;importjavax.swing.table...
Aliases.java.frame0.RootPane.FileChooserDemo.ComboBox You can copy object aliases from the Name Mapping editor to the clipboard and use them when manually adding test operations over the tested application’s objects. The following example shows a sample item selection operation on theComboBoxcombo...
Example Usage RSyntaxTextArea is simply a subclass of JTextComponent, so it can be dropped into any Swing application with ease. importjavax.swing.*;importjava.awt.BorderLayout;importorg.fife.ui.rtextarea.*;importorg.fife.ui.rsyntaxtextarea.*;publicclassTextEditorDemoextendsJFrame{publicTextEdi...
This example will have two views displaying the data from the model: a property-editor view and a graphical page view. Both of these are implementations of a JPanel, inserted into either a JDialog or JFrame. The dialog box allows the user to update the values of the model, and the fra...
To create a custom dialog, use the JDialog class directly. The code for simple dialogs can be minimal. For example, here is an informational dialog: Here is the code that creates and shows it: JOptionPane.showMessageDialog(frame, "Eggs are not supposed to be green."); The rest of ...
JPanel panel = new JPanel(new BorderLayout()); After a container has been created, you can set its layout manager using thesetLayoutmethod. For example: Container contentPane = frame.getContentPane(); contentPane.setLayout(new FlowLayout()); ...
(addButton, BorderLayout.WEST); add(removeButton, BorderLayout.EAST); }publicstaticvoidmain(String s[]) { JFrame frame =newJFrame("List Model Example"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setContentPane(newListModelExample()); frame.setSize(260, 200); frame....