类分层结构
- java.lang.Object
- javax.swing.text.AbstractDocument (implements javax.swing.text.Document, java.io.Serializable)
- javax.swing.text.PlainDocument
- javax.swing.AbstractListModel<E> (implements javax.swing.ListModel<E>, java.io.Serializable)
- java.awt.Component (implements java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable)
- java.awt.Container
- javax.swing.JComponent (implements java.io.Serializable)
- javax.swing.JComboBox<E> (implements javax.accessibility.Accessible, java.awt.event.ActionListener, java.awt.ItemSelectable, javax.swing.event.ListDataListener)
- javax.swing.JLabel (implements javax.accessibility.Accessible, javax.swing.SwingConstants)
- javax.swing.JPanel (implements javax.accessibility.Accessible)
- javax.swing.text.JTextComponent (implements javax.accessibility.Accessible, javax.swing.Scrollable)
- javax.swing.JTextField (implements javax.swing.SwingConstants)