Memory consumption of popular Java data types
http://java-performance.info/memory-consumption-of-java-data-types-2/
如何在Java中分配超过-Xmx限制的内存
http://it.deepinmind.com/java/2014/03/21/allocate-large-heap-in-java.html
http://java-performance.info/memory-consumption-of-java-data-types-2/
http://it.deepinmind.com/java/2014/03/21/allocate-large-heap-in-java.html