容器类 GUI类可分成三组:容器类( container)、辅助类( helper)和 组件类( component) Dimension Classes in the java. awt Layout manager Font Font Metrics Object Color Panel Applet JApplet Graphics Component Container Window Frame KI JFrame Dialog Dial Swing Components 容器类能用来包含其他组件 COmponen JPanel the javax. swing package容器类 Dimension Font FontMetrics Component Graphics Object Color Container Panel Applet Frame Dialog Window JComponent JApplet JFrame JDialog Swing Components in the javax.swing package Lightweight Heavyweight Classes in the java.awt package 1 LayoutManager * JPanel 容器类能用来包含其他组件 GUI类可分成三组：容器类（container）、辅助类（helper）和 组件类（component）