Check Box in java programming (V78)

JCheckBox

JCheckBox is a GUI component that allows users to make a binary choice: checked (true) or unchecked (false).
 

Example:

Source Code:

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    private void btnShowActionPerformed(java.awt.event.ActionEvent evt) {                                        
        StringBuilder sb = new StringBuilder("You selected: ");

        if (chkJava.isSelected()) {
            sb.append("Java ");
        }
        if (chkPython.isSelected()) {
            sb.append("Python ");
        }
        if (chkCpp.isSelected()) {
            sb.append("C++ ");
        }

        lblResult.setText(sb.toString());
    }                                                                                     

Result:

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