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JVM · hard

39. Memory Leaks in Java

When GC cannot help.

1 min read2 questionsup to 50 XPtopic 39/50

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A memory leak occurs when objects are no longer needed but are still referenced, preventing GC from reclaiming them.

How to study this topic

  1. 1. Read the explanation once end to end, skipping the code.
  2. 2. Re-read the code snippets and say out loud what each line does.
  3. 3. Answer the quiz without scrolling back — that is the real check.
  4. 4. Read every explanation, even for the answers you got right.

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Check your understanding

  1. 1. Common cause of leaks?

  2. 2. Tool to analyze heap dumps?

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