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FileInputStream fis = new FileInputStream("test.txt");
fis.readAllBytes();

why does fis = null does not make this stream object ready for garbage collection why does it lead to memory leak why do we have to close the stream object

vignesh suresh
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  • Garbage collection is not immediate. – Olivier Apr 25 '22 at 07:24
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    `fis = null` is a variable assignment. It’s not the purpose of variable assignments to close files. If you want to close the file, use the statement dedicated to close a file. Or better, use [try-with-resources](https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html). – Holger Apr 25 '22 at 10:02

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