jcheckbox

How to implement checkbox list java

由 假如想象 提交于 2019-11-27 08:43:08
问题 Probably a noob question, but im new to java. I have a need for a checkbox list which I found is not supported in swing, but I found this custom control here http://www.devx.com/tips/Tip/5342 So I created a class file named CheckBoxList, and copied the code from the link into it: import javax.swing.*; import javax.swing.border.*; import java.awt.*; import java.awt.event.*; public class CheckBoxList extends JList { protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1); public

How to check that a JCheckBox is checked?

由 限于喜欢 提交于 2019-11-27 01:32:40
问题 How can I check if a JCheckBox is checked? 回答1: Use the isSelected method. You can also use an ItemListener so you'll be notified when it's checked or unchecked. 回答2: By using itemStateChanged(ItemListener) you can track selecting and deselecting checkbox (and do whatever you want based on it): myCheckBox.addItemListener(new ItemListener() { @Override public void itemStateChanged(ItemEvent e) { if(e.getStateChange() == ItemEvent.SELECTED) {//checkbox has been selected //do something... } else

JTable Boolean.class

由 こ雲淡風輕ζ 提交于 2019-11-26 23:39:42
问题 import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.AbstractTableModel; import javax.swing.table.TableModel; class ColorTableModel extends AbstractTableModel { Object rowData[][] = { { "value1", Boolean.FALSE }, { "value1", Boolean.FALSE }, { "value1", Boolean.FALSE }, { "value1", Boolean.FALSE}, { "value1", Boolean.FALSE }, }; String columnNames[] = { "English", "Boolean" }; public int getColumnCount() {

Why does setSelected on JCheckBox lose effect?

由 偶尔善良 提交于 2019-11-26 21:03:49
Can someone explain to me why I lost the selection (set by setSelected() ) for JCheckBox when I put the JOptionPane into the ItemListener ? Is this a bug ? It is curious, that if this process is delayed with invokeLater() , setSelected() works correctly as I expected. from SSCCE import javax.swing.*; import java.awt.*; import java.awt.event.*; public class ComponentEventDemo extends JPanel implements ComponentListener, ItemListener { private static final long serialVersionUID = 1L; private JFrame frame; private JTextArea display; private String newline = "\n"; private JTextField field1; public

How do I make a list with checkboxes in Java Swing?

由 99封情书 提交于 2019-11-26 17:49:27
What would be the best way to have a list of items with a checkbox each in Java Swing? I.e. a JList with items that have some text and a checkbox each? Telcontar Create a custom ListCellRenderer and asign it to the JList . This custom ListCellRenderer must return a JCheckbox in the implementantion of getListCellRendererComponent(...) method. But this JCheckbox will not be editable, is a simple paint in the screen is up to you to choose when this JCheckbox must be 'ticked' or not, For example, show it ticked when the row is selected (parameter isSelected ), but this way the check status will no

how to add checkbox and combobox in table cell?

由 纵然是瞬间 提交于 2019-11-26 16:58:55
问题 I am creating one form which contain table and some buttons. A picture is worth a thousand words: How can I get the checkbox and comboboxes into the table? I am using NetBeans. I tried using drag and drop but didn't work. Here is my form code. public class HttpOutput extends javax.swing.JPanel { HttpElements current_Http_EleObject; /** * Creates new form HttpOutput */ public HttpOutput(HttpElements httpelements) { initComponents(); current_Http_EleObject=httpelements; TableColumn

Display JCheckBox in JTable

由 女生的网名这么多〃 提交于 2019-11-26 14:55:41
问题 I have a Jtable in which I want to add a JCheckbox in one column. However, when I create a JCheckbox object, javax.swing.JCheckBox is being displayed in the column.Please refer to the image. Can you tell me how to amend that please? I have searched everywhere but cannot seem to find any solution for it. Thank you. 回答1: don't add components to your TableModel , that's not the responsibility of the TableModel You will need to specify the class type of your column. Assuming you're using a

Why does setSelected on JCheckBox lose effect?

由 我的未来我决定 提交于 2019-11-26 07:49:42
问题 Can someone explain to me why I lost the selection (set by setSelected() ) for JCheckBox when I put the JOptionPane into the ItemListener ? Is this a bug ? It is curious, that if this process is delayed with invokeLater() , setSelected() works correctly as I expected. from SSCCE import javax.swing.*; import java.awt.*; import java.awt.event.*; public class ComponentEventDemo extends JPanel implements ComponentListener, ItemListener { private static final long serialVersionUID = 1L; private

How do I make a list with checkboxes in Java Swing?

由 五迷三道 提交于 2019-11-26 05:36:26
问题 What would be the best way to have a list of items with a checkbox each in Java Swing? I.e. a JList with items that have some text and a checkbox each? 回答1: Create a custom ListCellRenderer and asign it to the JList . This custom ListCellRenderer must return a JCheckbox in the implementantion of getListCellRendererComponent(...) method. But this JCheckbox will not be editable, is a simple paint in the screen is up to you to choose when this JCheckbox must be 'ticked' or not, For example, show

How to add checkboxes to JTABLE swing [closed]

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-11-26 04:57:40
Does anyone know how to put a JCheckBox in a JTable column? Something like this: I took this from How To use Tables Thanks in advance. mKorbel 1) JTable knows JCheckbox with built-in Boolean TableCellRenderers and TableCellEditor by default, then there is contraproductive declare something about that, 2) AbstractTableModel should be useful, where is in the JTable required to reduce/restrict/change nested and inherits methods by default implemented in the DefaultTableModel , 3) consider using DefaultTableModel , (if you are not sure about how to works) instead of AbstractTableModel , could be
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