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Throw a slightly more friendly message when a student opens an empty file #99

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Throw a slightly more friendly message when a student opens an empty file #99

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@ausbin ausbin commented Sep 26, 2023 •
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This error gets propagated to autograders, so a more friendly error message is useful

The current behavior is this, which confuses students:

java.lang.NullPointerException: Cannot read field "circuits" because "circuitFile" is null
	at com.ra4king.circuitsim.gui.CircuitSim.lambda$loadCircuits$57(CircuitSim.java:1477)
	at java.base/java.lang.Thread.run(Thread.java:833)

@ausbin
Throw a slightly more friendly message when a student opens an empty …
d261640 
…file

This error gets propagated to autograders, so a more friendly error message is useful
ausbin added a commit to gt-cs2110/CircuitSim that referenced this pull request Sep 26, 2023
@ausbin
Throw a friendly error message for empty files
e3f108a 
Our counterpart of ra4king#99
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