How could I write Java code that is executed like javascript code used together with the eval function?
What I would like to achieve would be something like this:
System.execute ("String str = \"test\"; System.out.println(str);");
which would print the word 'test'. (10x dehmann )
A code sample would help a lot.
Look into BeanShell or Groovy. Both will give you reasonable solutions--but those solutions rely on my interpretation of your problem, which may be flawed.
I've used the JavaScript engine shipped with Java 6 and it works quite well. The performance of the engine is very very decent.
Check the page http://java.sun.com/javase/6/docs/technotes/guides/scripting/programmer_guide/index.html
I believe the compiler API is present in the current Java SE 6. See the javadoc.
See this blog post for details and an example.
For completeness sake, the Compiler API is coming in the next version of Java..
来源：https://stackoverflow.com/questions/588242/how-could-i-call-java-code-dynamically