JComponent 组件类的层次结构 java. lang Object t--java awt Component java. awt Container +--javax swing JComponent JComponent大多数Swng组件类父类 Swing 2021/2/242021/2/24 3 JComponent • 组件类的层次结构 java.lang.Object | +--java.awt.Component | +--java.awt.Container | +--javax.swing.JComponent • JComponent——大多数Swing组件类父类