图形程序设计类的层次( Swing AWTEvent Classes in the javax. swing Layout manager Heavy weight Font FontMetrics Objec Color Panel Applet japplet Graphie Component Container Window Frame Frame Dialog JDialog JComponent Sv in the javax. swing package图形程序设计类的层次 (Swing) A WTEvent Fo nt FontMetrics Co mp o n e nt G raphi c s Obje ct Color Contai n e r Pa n el Applet Fra m e Di alog Windo w JComp o n e nt JAp plet JFrame JDial o g Swing C ompo nents in the j avax.swing package Lig htweight Heavyweight Classes in the javax.swing package 1 LayoutManager *