JavaScript engine (embedded in Sun's jdk) can throw not only ScriptException when script has a string that starts with valid operator(s) and ends with invalid one (see below example).
This is a spec violation because spec for ScriptException class says clear:
"The generic Exception class for the Scripting APIs. Checked exception types thrown by underlying scripting implementations must be wrapped in instances of ScriptException."

Example:

package test1;

import javax.script.*;

public class js_test {
    public static void main(String[] args) {
        String testScript = "print('Hello world');blabla;";
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine jsFactory = manager.getEngineByExtension("js");
        try {
            Object result = jsFactory.eval(testScript);
        } catch (ScriptException e) {
            System.out.println("in ScriptException");
            e.printStackTrace();
        } catch(Exception e) {
            System.out.println("in Exception - bug present");
            e.printStackTrace();
        }

    }
}

Above example will throw java.lang.ArrayIndexOutOfBoundsException, not ScriptException as spec required.
###@###.### 2005-07-13 09:44:14 GMT