Big Data-java Foundation -5day

Overflow of Stack:

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1, the dead loop will not cause the overflow of the stack.

2, recursive call will cause the stack overflow.

Heap Memory

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1, the default is One-fourth of physical memory

2, memory overflow generally refers to heap memory overflow.

3. View Java Process ID using JPS

4. View heap memory information for the specified Java process using: Jmap-heap PID

5, java-xmx5g Heapdemo//Set maximum heap memory.

-XMS1G //sets the initial heap size.

6. Tools To view Java memory JVISUALVM

Big Data-java Foundation -5day