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One line java program that throw "java.lang.OutOfMemoryError: Java heap space Analysis Eclipse MAT

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Published on Aug 7, 2013

One line java program that throw java.lang.OutOfMemoryError, How to deal with "java.lang.OutOfMemoryError: Java heap space" error

Java heap space out of memory -
Java堆的内存空间

StringBuffer keeps everyhing in an char-array, and there is a certain method that increases the char-array-size when finding out that the array does not fit anymore. The method increases the size by at least "2 * currentSize + 2". This may make sense for small sizes, but it's completely a wrong decision for big sizes

Run Java with the command-line option -Xmx, which sets the maximum size of the heap
for eclipse
Right mouse click - Run As - Run Configuration - Arguments - Vm Arguments, then add this -Xmx2048m


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