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Java - Interview Questions and Answers on Memory Leaks

Q1.  Name few tools for probing Java Memory Leaks ?

Ans. JProbe, OptimizeIt

Q2. Which Java mechanism helps in recovering the memory lost with memory leaks ?

Ans. Garbage Collection.

Q3.  How substring() method of String class create memory leaks?

Ans. substring method would build a new String object keeping a reference to the whole char array, to avoid copying it. Hence you can inadvertently keep a reference to a very big character array with just a one character string.

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