请教一个关于java的英文题目.“16.Which of the following lines of c”...16.Which of the following lines of code defines a new panel class?a) class OutputPanel extends JPanel b) class OutputPanel inherits JPanel c) class OutputPanel impleme

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请教一个关于java的英文题目.“16.Whichofthefollowinglinesofc”...16.Whichofthefollowinglinesofcodedefinesanewpanel

请教一个关于java的英文题目.“16.Which of the following lines of c”...16.Which of the following lines of code defines a new panel class?a) class OutputPanel extends JPanel b) class OutputPanel inherits JPanel c) class OutputPanel impleme
请教一个关于java的英文题目.“16.Which of the following lines of c”...
16.Which of the following lines of code defines a new panel class?
a) class OutputPanel extends JPanel
b) class OutputPanel inherits JPanel
c) class OutputPanel implements JPanel
d) class OutputPanel throws JPanel
e) class OutputPanel uses JPanel
16a
能不能简单说明一下为什么其他的选项不对?

请教一个关于java的英文题目.“16.Which of the following lines of c”...16.Which of the following lines of code defines a new panel class?a) class OutputPanel extends JPanel b) class OutputPanel inherits JPanel c) class OutputPanel impleme
JPanel 是一个类
JAVA的语法,
extends 继承类
implements 继承接口
所以,清楚了.

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