Difference between Stack and Heap memory in Java

Difference between Stack and Heap memory in Java

Tuesday, January 22, 2013 Difference between Stack vs Heap in Java Here are few differences between stack and heap memory in Java: 1) Main difference between heap and stack is that stack memory is used to store local variables and function call, while heap memory is used to store objects in Java. No matter, where object is created in code e.g. as member variable, local variable or class variable,  they are always created inside heap space in Java. 2) Each Thread in Java has there own stack which can be specified using -Xss JVM parameter, similarly you can also specify heap size of Java program using JVM option -Xms and -Xmx where -Xms is starting size of heap and -Xmx is maximum size of java heap. to learn more about JVM options see my post 10 JVM option Java programmer should know . 3) If there is no memory left in stack for storing function call or local variable, JVM will throw java.lang.StackOverFlowError, while if there is no more heap space for creating object,

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