jcheckbox

问题 My program contains a label with the caption “Choose a coffee” and four check boxes – Americano, Espresso, Double Espresso and Latte. Note: A JCheckBox array is recommended here) I need to add event handling code to allow the user to purchase one or more items. The bill amount is displayed in a label after the user has made their selections. The prices are Americano €3.75, Espresso €4.00, Double Espresso €4.50 and Latte €3.50. An array is suitable here also. As the user makes a choice a label

问题 JCheckBox is checked but it still shows its value as false when i use system.out.print .If the focus is lost but with JCheckBox still checked then it returns true. i.e when i check 2 checkbox the result showed is for first checkbox. the status of second checkbox is not shown. complete prog is shown below: pls run the prog and do rectify my mistake. any help is welcome. public class check extends JFrame { public check() { setBounds(00, 40, 400, 400); Color c = new Color(160, 200, 100);

问题 This question already has answers here : Tristate Checkboxes in Java (9 answers) Closed 3 years ago . I want a JCheckbox that has 3 states as shown below: Partially Selected Unselected Full Selected Q1. Can I use the JCheckbox for the above purpose or have to go for some custom swing component? 回答1: Here is an example for a TristateCheckBox: http://www.javaspecialists.co.za/archive/Issue145.html 回答2: Oh yes, but you have to create a custom component. Take a look at this article in the Java

问题 I have a JTable with a custom model implemented extending AbstractTableModel. public abstract class AbstractTable extends AbstractTableModel{ public Class<? extends Object> getColumnClass(int c) {} } Because I've implemented the getColumnClass method, Boolean values are rendered in the table like checkboxes. I would like to intercept checkbox's change of status but unfortunately I can't add directly a mouse listener, because I don't have a reference to the checkbox itself, which it isn't

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I want to know why this code is giving me this problem, keep in mind that it has already worked in an earlier Form of the same project but it refuses to work here. private void jButton1ActionPerformed(java.awt.event.ActionEvent evt){ if (jCheckBox1.isSelected()== true) jCheckBox1.equals(56); if (jCheckBox2

问题 Hi Friends I have a DefaultPieDataset that am Creating this way: package business.intelligence.system; import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.Rectangle; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.JInternalFrame; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import javax.swing.*; import java.sql.Connection; import java.sql

问题 I am trying to make: A JTree where ALL nodes have the possibility of a JCheckBox. After having selected the different checkboxes I would like to be able to extract strings stating the node path to the different checked nodes. The leader node must be able to show if a child node has been selected. I have included a small SSCCE import javax.swing.JFrame; import javax.swing.JTree; import javax.swing.tree.DefaultTreeModel; import javax.swing.tree.DefaultMutableTreeNode; import java.awt.Color;

问题 I have three JCheckBox like following: final JCheckBox c1 = new JCheckBox("A"); final JCheckBox c2 = new JCheckBox("B"); final JCheckBox c3 = new JCheckBox("C"); I make a group by ButtonGroup for this checkboxes like following: final ButtonGroup bg = new ButtonGroup(); bg.add(c1); bg.add(c2); bg.add(c3); I have a Button to display selected items into a label like following: String SelectedItem=""; Enumeration<AbstractButton> items= bg.getElements(); while (items.hasMoreElements()) {

问题 I have a JPanel set with the Windows Look and Feel. I have 3 JCheckBoxes, including 2 disabled ones which don't interfere with this problem. However, the non-disabled one is glitching with the JButton I have later in this JPanel: The JCheckBox code: JCheckBox checkBox = new JCheckBox("TTxJIRA Bash"); checkBox.setSize(300, (checkBox.getFontMetrics(checkBox.getFont()).getHeight())); checkBox.setLocation(10, 100); checkBox.setVisible(true); checkBox.setSelected(true); checkBox.setBackground(new

问题 This question already has answers here : How to add JCheckBox in JTable? (2 answers) Closed 8 months ago . I have created a JTable from data I stored in a SQL database. Basically, my number of columns are fixed in the JTable . Now I want to add a column which will allow the user to select a particular row using checkbox of that particular row. I searched through the net I did not get any solution for this problem. I searched in SO and all I got is how to add a column for JTable initialized