How can I compile Javascript from Java??

Hi all,
I am facing a problem, problem is I have to compile JavaScript code in Java. JavaScript code will given in Text field, those code i have to compile and i should display a message saying this is valid Java script code or Invalid code.Can anyone help on this...

JavaScript code interpreting but not compiling... I need to compile, but not Interpret the code. How can i Compile the JavaScript Code...

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