Java Memory Available getAvailableMemory()

Description

TODO TEST!!

License

Open Source License

Return

total available memory, in bytes. Does not run GC, so this is a fast call.

Declaration

public static long getAvailableMemory() 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    /**//from  w  w w . j  av a2  s.  c  o  m
     * TODO TEST!! This has changed
     * 
     * @return total available memory, in bytes. Does not run GC, so this is a fast
     *         call.
     * @see Runtime#freeMemory() -- which ignores the heap's capacity to grow, so is less
     * useful! Runtime#freeMemory() can be thought of as "fast memory".
     */
    public static long getAvailableMemory() {
        Runtime rt = Runtime.getRuntime();
        long maxMem = rt.maxMemory();
        long freeMem = rt.freeMemory();
        long totalMem = rt.totalMemory();
        long used = totalMem - freeMem;
        long available = maxMem - used;
        return available;
    }
}

Related

1. availableMemory()
2. availableMemory()
3. availableMemoryPercent()
4. getAvailableMemory()
5. getAvailableMemory()
6. getAvailableMemory()
7. getAvailableMemoryFraction()
8. getAvailableMemorySize()