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18 paź 2012 · If variable reach four, disable all of checkboxes with setEnabled(false) except those which are checked. When you'll decrease your variable from 4 to 3, set them to enabled. This is good example about ChangeListener: http://www.java2s.com/Code/Java/Event/CheckBoxItemListener.htm
var counter : Int = 0 val maxLimit = 3 banana.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @SuppressLint("DefaultLocale") public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if(isChecked){ counter++; if(counter == maxLimit){ buttonView.setChecked(false); } }else{ counter--; } } });
23 paź 2023 · Checkbox (String label, CheckboxGroup group, boolean state) Creates a checkbox with the given label, associates it with the specified CheckboxGroup, and sets the initial state. Methods of checkbox class are inherited by two classes: java.awt.Component. java.lang.Object.
public JCheckBox (String text, Icon icon, boolean selected) Creates a check box with text and icon, and specifies whether or not it is initially selected. Parameters:
23 maj 2018 · JCheckBox(String text, Icon icon, boolean selected): creates a new checkbox with the string and the icon specified and the boolean value specifies whether it is selected or not. Methods to add Item Listener to checkbox.
5 lip 2019 · This article describes how to use JCheckBox component in Swing applications, including code examples, common practices and a demo program. Table of content: Creating a new JCheckBox object. Adding the check box to a container. Setting and getting selected state. Adding event listeners.
setLayout (new GridLayout (3, 1)); add (new Checkbox ("one", null, true)); add (new Checkbox ("two")); add (new Checkbox ("three")); This image depicts the check boxes and grid layout created by this code example: The button labeled one is in the "on" state, and the other two are in the "off" state.
