?? paramdemo.java
字號(hào):
/*
* 文件名:ParamDemo.java
* 說 明:演示Applet與瀏覽器間的通信
* 向Applet傳遞參數(shù)
*/
import java.awt.*;
import java.applet.*;
/*
<applet code="ParamDemo" width=300 height=80>
<param name=fontName value=Courier>
<param name=fontSize value=14>
<param name=leading value=2>
<param name=accountEnabled value=true>
</applet>
*/
public class ParamDemo extends Applet
{
String fontName;
int fontSize;
float leading;
boolean active;
// 初始化顯示字符串
public void start()
{
String param;
fontName = getParameter("fontName");
if (fontName == null)
fontName = "Not Found";
param = getParameter("fontSize");
try
{
if (param != null) // 如果沒有參數(shù)
fontSize = Integer.parseInt(param);
else
fontSize = 0;
} catch(NumberFormatException e)
{
fontSize = -1;
}
param = getParameter("leading");
try
{
if (param != null) // 如果沒有參數(shù)
leading = Float.valueOf(param).floatValue();
else
leading = 0;
} catch(NumberFormatException e)
{
leading = -1;
}
param = getParameter("accountEnabled");
if (param != null)
active = Boolean.valueOf(param).booleanValue();
}
// 打印參數(shù)
public void paint(Graphics g)
{
g.drawString("Font name: " + fontName, 0, 10);
g.drawString("Font size: " + fontSize, 0, 26);
g.drawString("Leading: " + leading, 0, 42);
g.drawString("Account Active: " + active, 0, 58);
}
}
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