Question

Applet未初始化

我已经在ubuntu18.04 LTS机器上安装了JDK8。我尝试在其他计算机上运行代码。工作正常我想知道如何配置applet浏览器。

HelloWorld.java

import java.applet.*;
import java.awt.*;

//Value passed through HTML

public class HelloWorld extends Applet{
    int x, y, w, h;

    public void init(){
         x = Integer.parseInt(getParameter (" xValue ")); //start x coordinate
         y = Integer.parseInt(getParameter (" yValue ")); // start y coordinate
         w = Integer.parseInt(getParameter (" wValue ")); // width
         h = Integer.parseInt(getParameter (" hValue ")); // height
    }

    public void paint( Graphics g ){
        g.drawRect (x, y, w, h ); // Graphics written method
    }
}

Hello.html

<html>
    <body>
        <applet code = "HelloWorld.class" width = "300" height = "300" >
        <param name = xValue  value = 20 >
        <param name = yValue  value = 40 >
        <param name = wValue  value = 100 >
        <param name = hValue  value = 50 >
        </applet>
    </body>
</html>

它应该产生一个applet，并以给定的xy坐标和给定的高度和宽度绘制一个矩形。

Java AppletViewer未初始化

0 个答案: