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Tip of the Day
Language: Java
Expertise: Intermediate
Mar 28, 2018

Infinite Heap in Java

This method creates a PDF file and returns the binary PDF data as a byte array. This particular line of code supposes that the resulting file is small and fits into the available heap memory, but if this code can not make this 100% sure, then it is vulnerable to an out of memory condition.

byte[] pdf = toPdf(file);

Moreover if it run server-side, that means in general many parallel threads. Bulk data should never by handled by byte arrays.

Streams should be used and the data should be spooled to disk or database.

Octavia Anghel
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