jcheckbox

How can I check if a JCheckBox is checked? Matthew Flaschen Use the isSelected method. You can also use an ItemListener so you'll be notified when it's checked or unchecked. 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 {//checkbox has been deselected //do something... }; } }); Java Swing itemStateChanged docu

Here is a simple graphics programs which adds some stars on the screen. import acm.graphics.*; import acm.program.*; import java.awt.event.*; import javax.swing.*; /** * This program creates a five-pointed star every time the * user clicks the mouse on the canvas. */ public class DrawStarMap1 extends GraphicsProgram { public void init() { /* Initializes the mouse listeners */ addMouseListeners(); /* The check box starts out in the "on" position */ fillCheckBox = new JCheckBox("Filled"); fillCheckBox.setSelected(true); add(fillCheckBox, SOUTH); /* Clears the screen with a button */ add(new

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. 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 DefaultTableModel , you can simply fill the column with a bunch of booleans and this should work - After testing,

I was looking for a a JTree implementation, that contains checkboxes and which: When you select one node, all its successors in the tree are automatically selected When you unselect one node, all its successors in the tree are automatically unselected When a parent node is already selected, and the selection was removed from one of its successors, the node color will be changed, to make it intuitive that although this parent node is selected, not all of its successors are selected (Like when you select components to install in common installers) A click on a node leads to (No need to hold