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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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3 changes: 3 additions & 0 deletions src/main/java/com/ra4king/circuitsim/gui/CircuitSim.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1474,6 +1474,9 @@ public void loadCircuits(File file) throws Exception {

CircuitFile circuitFile = FileFormat.load(lastSaveFile);

if (circuitFile == null) {
throw new NullPointerException("File is empty!");
}
if (circuitFile.circuits == null) {
throw new NullPointerException("File missing circuits");
}
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