Evaluating Checkbox Boolean Value

Question

I'm sure this is a rediculously easy question, but I just can't find the answer to it anywhere. I have a JCheckbox that I need to evaluate the boolean value of, and then change the value with an if statement. The problem is I just can't find the syntax anywhere for evaluating the contents of a JCheckbox, let alone changing it. This will probably be really easy one, but I just can't seem to find anything helpful. Thanks!

Solution 1

This SO thread sort of answers your question. If your JCheckBox is named "Foo", you would check its value with

Foo.isSelected()

To set its value, you would use

Foo.setSelected(true)

Solution 2

Do you mean how to check if Checkbox is selected or not, if yes then use isSelected

boolean isSelected = jCheckBox.isSelected();

if(isSelected ){
   jCheckBox.setSelected(false);
} else {
   jCheckBox.setSelected(true);
}

Solution 3

There is an awesome tutorial from Sun that you can read to complete your knowledge. If you want to know the current selection state of a JCheckbox, just use the method isSelected().

Comments

[jn1kk]

Its inherited from AbstractButton.

[dshapiro]

I don't have a Java compiler handy right now, so I can't say for sure, but I'm pretty sure that just doing Foo.setSelected(true) will update the checkbox to be checked on the form.

[justanother1]

While it works initially in an if statement, any further changes made do not change the other box.

[mKorbel]

add ItemListener to the JCheckBox,

[justanother1]

Never Mind, I foudn the method I was looking for.

[dshapiro]

What was it? Future generations might like to know.

[justanother1]

It's the itemListen method. Found it in another question.