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via GitHub by DJTech9
, 2 years ago
This exception has no message.
via Stack Overflow by Show Stopper
, 2 years ago
This exception has no message.
java.lang.UnsupportedOperationException at java.util.concurrent.CopyOnWriteArrayList$COWIterator.set(CopyOnWriteArrayList.java:1049) at java.util.Collections.sort(Collections.java:221) at test.Main.main(Main.java:23)