摘要:试题六(15分,每空3分)[说明]当用户启动html浏览器并首次打开下面的html文档时,JavaApplet小程序在显示面板上显示字符串“Welcome!”;当html页面被其他窗口遮挡后再次显示时,小程序在显示面板上显示“Welcomeback!”。[Java代码]importjava.awt.*;importjava.applet.*;publicclassHelloAppletextends___(1)___{public
试题六(15分,每空3分)
[说明]
当用户启动html浏览器并首次打开下面的html文档时,Java Applet小程序在显示面板上显示字符串“Welcome !”;当html页面被其他窗口遮挡后再次显示时,小程序在显示面板上显示“Welcome back !”。
[Java代码]
import java.awt.*;
import java.applet.*;
public class HelloApplet extends ___(1)___ {
public void paint ( ___(2)___ ) {
g.drawstring ( message, 10, 20 );
message = “welcome back !”;
}
public void ____(3)____ () {
message = “welcome !” ;
}
private ___(4)___ message;
}
[html文档]
<html>
<head>
<tittle>HTML Test HelloApplet Page</tittle>
</head>
<body>
Test HelloApplet 小程序<br>
<applet
codebase = “ . ”
code = “ ___(5)___ ”
name = “ TestApplet”
width = ” 400 ”
height = “ 300 ”
>
</applet>
</body>
</html>
参考答案:
(1) Applet
(2) Graphics g
(3) init
(4) String
(5) HelloApplet.class
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