Java Memory Used getUsedMemory()

Description

get Used Memory

License

Open Source License

Return

the amount of memory currently being used, in bytes. Often inaccurate, but there's no better thing to do from within the JVM.

Declaration

public static long getUsedMemory() 

Method Source Code

//package com.java2s;
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public class Main {
    /**
     * @return the amount of memory currently being used, in bytes. Often inaccurate, but there's no better thing to do from within
     *         the JVM.
     */
    public static long getUsedMemory() {
        gc();
        long totalMemory = Runtime.getRuntime().totalMemory();
        gc();
        long freeMemory = Runtime.getRuntime().freeMemory();
        long usedMemory = totalMemory - freeMemory;
        return usedMemory;
    }

    private static void gc() {
        try {
            for (int i = 0; i < 2; i++) {
                System.gc();
                Thread.sleep(100);
                System.runFinalization();
                Thread.sleep(100);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Related

1. getUsedMemory()
2. getUsedMemory()
3. getUsedMemory()
4. getUsedMemory()
5. getUsedMemory()
6. getUsedMemoryInMb()
7. getUsedMemoryInMegabytes()
8. getUsedMemoryMBs()
9. getUsedMemoryMegaBytes()