Panel toppanel=new Panel();frame.add(toppanel);toppanel.setLayout(new GridLayout(1,4,3,3));/

Panel toppanel=new Panel();frame.add(toppanel);toppanel.setLayout(new GridLayout(1,4,3,3));/ Java 的Frame和Panel的区别下面哪个语句是正确的【 】：A.Object o = new Button(“A”); B.Button b = new Object(“B”);C.Panel p = new Frame(); D.Frame f = new Panel(); 从ext.panel继承和new一个panel的区别初学extjs,如题,employeePanel = new Ext.Panel({}）和employeePanel =Ext.extend(Ext.Panel,{}）,我觉得怎么一样啊 , Panel A *p= new double ** p=new double* Container contentPane=getContentPane();contentPane.add(panel); Node *p与P=new Node有什么区别? point p=new point() 与p= new point() 的区别JAVA菜鸟,不耻下问啦! delphi动态创建Panel后,再新建个Form,把Form.parent:=这个Panel,当把这个Panel释放后就出错了!delphi动态创建Panel后,再新建个Form,把Form.parent:=这个Panel,当把这个Panel释放后,再来从新动态创建Panel重复前 control panel panel是什么意思 PANEL是什么意思 molecular panel closure panel panel resolutions A *p=new C,A和C都是类, Rectangle *p = new Rectangle 是什么 它是干什么用的