java.lang.NullPointerException

Coderanch | Lu Kim Hui | 5 years ago
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    java.lang.NullPointerException please help D: newbie here

    Coderanch | 5 years ago | Lu Kim Hui
    java.lang.NullPointerException
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at SalesCounter.readFromFile()
    2. Unknown
      __SHELL1.run
      1. SalesCounter.readFromFile(SalesCounter.java:35)
      2. SalesCounterDemo.main(SalesCounterDemo.java:6)
      3. __SHELL1.run(__SHELL1.java:6)
      3 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:601)
      4 frames
    4. bluej.runtime
      ExecServer$3.run
      1. bluej.runtime.ExecServer$3.run(ExecServer.java:724)
      1 frame