JSObject：下载或在JRE 1.6中下载？

Question

This is a question from a Java noob.

I have eclipse open (JRE 1.6), I have copied this code into an eclipse class .

The line in question is this:

import netscape.javascript.JSObject;

Eclipse is complaining that the import can not be resolved. I read that in the docs that the Java Plug-In comes as standard and contains the above. I assumed I don't need any extra JAR files. Is this true?

Or do I need to download something to make use of JSObject?

Thanks all

Answer 1

Search for the plugin.jar normally located in your jre\\lib folder. You will need to include that one explicitly in your eclipse project I guess

btw. don't forget to set the MAYSCRIPT attribute on your applet tag in order to explicitly enable java-js communication which normally is disabled by default for security reasons

Answer 2

如果在linux中你找不到jar文件（可能使用openjre）只需将它从Windows安装复制到你的本地linux发行版并像使用任何其他jar文件一样使用它。

Answer 3

Javascript is just one of the ScriptEngines in JDK1.6.

http://java.sun.com/developer/technicalArticles/J2SE/Desktop/scripting/ :

ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine jsEngine = mgr.getEngineByName("JavaScript");
try {
  jsEngine.eval("print('Hello, world!')");
} catch (ScriptException ex) {
  ex.printStackTrace();
}