C:\Java\jdk1.6.0_10\jre\lib\ext 还有就是 java.lang.NullPointerException at sun.plugin2.applet.Plugin2Manager.findAppletJDKLevel(Unknown Source) at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 异常:java.lang.NullPointerException 这个异常能看出来是缺少jfreechart的jar还是applet的依赖jar?
jrexia的lib我也试过了!
不过还是跑出上面的异常!
能告诉我你的qq吗?
帮我远程调一下可以吗?
<applet code="test.applet.AppletTest.class"
archive="/testapp/lib/antlr-2.7.5.jar,/testapp/lib/arq.jar,/testapp/lib/arq-extra.jar"
width="600" height="600" />
archive用这个参数。注意,jar别放在WEB-INF目录下,放到根目录的某个目录下。
还有就是
java.lang.NullPointerException
at sun.plugin2.applet.Plugin2Manager.findAppletJDKLevel(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
异常:java.lang.NullPointerException 这个异常能看出来是缺少jfreechart的jar还是applet的依赖jar?
晕死了!我要做的是用jfreechart在jsp页面上生成一个实时刷新从数据库里的一个字段的曲线图!
各位除了用applet还有什么其他办法吗?
<APPLET CODE = "quxian.class" WIDTH = "600" HEIGHT = "500">
<PARAM NAME = "archive" VALUE = "lib/jcommon-1.0.16.jar,lib/jfreechart-1.0.13.jar,lib/jfreechart-1.0.13-swt.jar" >
</APPLET>
html页面和引用jar的lib在同一个目录下