Swing常用组件的继承关系

java.lang.Object ->java.awt.Component ->java.awt.Container-> java.awt.Window ->java.awt.Frame ->javax.swing.JFrame;//窗口JFrame

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.JPanel;//容器JPanel

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.JLabel//标签JLabel

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.AbstractButton //命令按钮JButton

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.text.JTextCompinent->javax.swing.JTextField//单行文本编辑框JTextField

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.text.JTextCompinent->javax.swing.JTextArea//多行文本编辑框JTextArea

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.text.JTextCompinent->javax.swing.JTextField->javax.swing.JPasswordField//口令输入框JPasswordField

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.AbstractButton->javax.swing.JToggleButton //开关按钮JToggleButton

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.AbstractButton->javax.swing.JToggleButton ->javax.swing.JCheckBox//复选按钮JCheckBox

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.AbstractButton->javax.swing.JToggleButton ->javax.swing.JRadioButton//单选按钮JRadioButton

java.lang.Object->javax.swing.ButtonGroup//按钮组ButtonGroup

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.JList//列表框JList

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.JComboBox//下拉列表框JComboBox

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.JMenuBar

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.AbstractButton->javax.swing.JMenuItem->javax.swing.JMenu

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.AbstractButton->javax.swing.JMenuItem

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.AbstractButton->javax.swing.JMenuItem->javax.swing.JCheckBoxMenuItem

java.lang.Object->java.awt.Component->java.awt.Container->javax.swing.JComponent->javax.swing.JPopupMenu//弹出式选单