java.lang.NullPointerException

Exception #2592556

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  • Stack trace

    • java.lang.NullPointerException at java.io.StringReader.<init>(StringReader.java:33) at java.util.Scanner.<init>(Scanner.java:665) at PJ2.LispExprEvaluator.evaluate(LispExprEvaluator.java:153) at PJ2.LispExprEvaluator.evaluateExprTest(LispExprEvaluator.java:212) at PJ2.LispExprEvaluator.main(LispExprEvaluator.java:228)

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