Swing contains three main classes to handle menus:
javax.swing.JMenu
javax.swing.JMenuBar
javax.swing.JMenuItem
javax.swing.JCheckboxMenuItem
javax.swing.JRadioButtonMenuItem
java.lang.Object
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+---java.awt.Component
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+---java.awt.Container
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+---javax.swing.JComponent
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+--javax.swing.JContainer
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+--javax.swing.AbstractButton
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+--javax.swing.JMenuItem
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+--javax.swing.JMenu
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+--javax.swing.CheckboxMenuItem
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+--javax.swing.RadioButtonMenuItem