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NullPointerException in BTreeMap.get() #5

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pcernocky opened this issue May 18, 2020 · 1 comment

pcernocky commented May 18, 2020

This code:

    BTreeMap<Integer, Integer> map = BTreeMap.create();

    for (int i = 0; i < 1000; i++) {
      map.put(i, i);
    }

    for (int i = 0; i < 481; i++) {
      map.remove(i);
    }

    map.get(481);  // this line fails with NullPointerException

fails with exception:

Exception in thread "main" java.lang.NullPointerException
	at uk.co.omegaprime.btreemap.BTreeMap$Internal.find(BTreeMap.java:221)
	at uk.co.omegaprime.btreemap.BTreeMap.findLeaf(BTreeMap.java:491)
	at uk.co.omegaprime.btreemap.BTreeMap.getOrDefault(BTreeMap.java:501)
	at uk.co.omegaprime.btreemap.BTreeMap.get(BTreeMap.java:470)
	at Test.main(Test.java:22)

The text was updated successfully, but these errors were encountered:

Owner

batterseapower commented May 18, 2020

You're right. It's not immediately clear to me why this happens.

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