jcheckbox

问题 Alright. I have implemented a custom JTable model that includes the whole @Override public Class<?> getColumnClass(final int column) { and inside that I have if (column == 0) return Boolean.class; When I run, and I go to the JTable , instead of a checked JCheckbox , it says true. When I click on it, it turns into a JCheckBox until I unclick and then either says true or false. WHAT AM I DOING WRONG!!??? 回答1: really don't know, you can compare your code with note both definitions for Column

问题 Shouldn't the new Boolean appear as a checkbox? It's showing up as a true/false string value instead. This is how I'm populating the data: Object[] columnNames4 = {"Name", "City", "Checkbox"}; Object[][] data = { {"john smith", "x", new Boolean(false)}, {"jenny m", "y", new Boolean(false)} }; JTable table4 = new JTable(data, columnNames4); JScrollPane S3 = new JScrollPane(table4); S3.setPreferredSize(new Dimension(300, 300)); 回答1: Create a subclass ofAbstractTableModel and return Boolean

问题 Hi all I am having some difficulties with adding a joptionpane in JcheckBox listener public void itemStateChanged(ItemEvent evt) { if(evt.getStateChange() == ItemEvent.SELECTED){ ///some code JOptionPane.showMessageDialog(null, "Message", "Alert", JOptionPane.INFORMATION_MESSAGE); } } so it works fine,but the problem is that the JCheckBox gets selected and immediately deselected how can I manage to fix this ? Cheers 回答1: There are a couple of suggestions here (solution) to use an action

问题 I am new to swings, trying to delete selected checkbox on click of delete button in java swings, i tried by using "DefaultListModel" ,here i able to delete normal data not with check box here my code: import java.awt.BorderLayout; import java.awt.Component; import java.awt.Container; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.BorderFactory; import

问题 Please have a look at the following code import java.awt.GridLayout; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import javax.swing.Box; import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; public class TestSend

问题 I have a checklist with radio buttons and check boxes, I want to make the circles and boxes little bigger than their default size. 回答1: Some platforms support a large size variant, as discussed in Resizing a Component. 回答2: You need to provide custom Icons. Read the API for the appropriate methods to set custom icons for the various states of the model. 来源： https://stackoverflow.com/questions/6258402/how-to-increase-size-of-jradiobuttons-jcheckboxes

问题 I've got a 3 column JTable. Column 2 is a checkbox which I want to enable/disable the JSpinner for that row. I've got working how I want except for one thing -- The JSpinner doesn't actually look like its disabled (text and spinner buttons greyed out). I'm not quite sure how to attain this. I've tried forcibly calling setEnabled(false) on the JSpinner, but the table doesn't seem to redraw correctly. Here is some code I've gotten working through other StackOverflow examples: import java.awt

问题 I have two checkboxes placed on form. If user set check on checkbox1 than uncheck checkbox2 and vice versa. chRISING0 = new JCheckBox("RISING"); chRISING0.addItemListener(new ItemListener() { public void itemStateChanged(ItemEvent e) { chFR0.setSelected(false); } }); chRISING0.setFont(new Font("Tahoma", Font.PLAIN, 9)); chRISING0.setBounds(42, 15, 84, 23); pnlOUT1.add(chRISING0); chFR0 = new JCheckBox(fpp.loadLanguage("chFR0")); chFR0.setFont(new Font("Tahoma", Font.PLAIN, 9)); chFR0

问题 I have a program to display database into a dynamic JTable . Its working fine. Now I want to add 1 more column into the table with CheckBox in each field. What should I do? Here is my code: public static DefaultTableModel myTableModel(ResultSet rs) throws SQLException { ResultSetMetaData metadata = (ResultSetMetaData) rs.getMetaData(); int columnsCount = metadata.getColumnCount(); Vector<String> columnNames = new Vector<>(); for (int i = 1; i < columnsCount; i++) { columnNames.add(metadata

问题 How can I put a JCheckbox or a JButton on a specific row and column of a JTable ? 回答1: Not sure about a button, but here is a working example to put a checkbox: import javax.swing.*; import javax.swing.table.*; public class Test { public static void main(String [] args) throws Exception { DefaultTableModel model = new DefaultTableModel(null, new String [] {"CheckMe", "Value"}) { public Class getColumnClass(int c) { switch (c) { case 0: return Boolean.class; default: return String.class; } } }