[jira] Created: (JEXL-62) NPE in Interpreter when using createScript()

NPE in Interpreter when using createScript()
--------------------------------------------

                 Key: JEXL-62
                 URL: https://issues.apache.org/jira/browse/JEXL-62
             Project: Commons JEXL
          Issue Type: Bug
    Affects Versions: 2.0
            Reporter: Sebb


The following script works OK when using createExpression() + evaluate(), but 
causes an NPE when using createScript() + execute():

{code}
ctxt.getVars().put("dummy", "abcd");
sys=dummy.Class.forName("java.lang.System");
now=sys.currentTimeMillis(); // this works OK
sys.out.println('test'); // This line causes NPE as below

java.lang.NullPointerException
        at org.apache.commons.jexl.Interpreter.visit(Interpreter.java:890)
        at 
org.apache.commons.jexl.parser.ASTReference.jjtAccept(ASTReference.java:17)
        at org.apache.commons.jexl.Interpreter.visit(Interpreter.java:912)
        at 
org.apache.commons.jexl.parser.ASTReferenceExpression.jjtAccept(ASTReferenceExpression.java:17)
        at org.apache.commons.jexl.Interpreter.visit(Interpreter.java:624)
        at 
org.apache.commons.jexl.parser.ASTJexlScript.jjtAccept(ASTJexlScript.java:17)
        at org.apache.commons.jexl.Interpreter.interpret(Interpreter.java:157)
        at org.apache.commons.jexl.ScriptImpl.execute(ScriptImpl.java:49)
{code}


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