Java Memory Used getMemoryUse()

Description

retrieve the usage of memory.

License

Apache License

Return

the size of memory has been used

Declaration

public static long getMemoryUse() 

Method Source Code

//package com.java2s;
//License from project: Apache License 

public class Main {
    private static long fSLEEP_INTERVAL = 100;

    /**/*from w  w  w  .ja  v  a2 s. c o  m*/
     * retrieve the usage of memory.
     * 
     * @return the size of memory has been used
     */
    public static long getMemoryUse() {
        putOutTheGarbage();
        long totalMemory = Runtime.getRuntime().totalMemory();
        putOutTheGarbage();
        long freeMemory = Runtime.getRuntime().freeMemory();
        return (totalMemory - freeMemory);
    }

    /**
     * run garbage collections.
     */
    private static void putOutTheGarbage() {
        collectGarbage();
        collectGarbage();
    }

    /**
     * run a garbage collection.
     */
    public static void collectGarbage() {
        try {
            System.gc();
            Thread.sleep(fSLEEP_INTERVAL);
            System.runFinalization();
            Thread.sleep(fSLEEP_INTERVAL);
        } catch (InterruptedException ex) {
            ex.printStackTrace();
        }
    }
}

Related

1. calcUsedMemorySize()
2. disposeUnusedMemory()
3. getAvailableUnusedMemory()
4. getMemoryInUse()
5. getMemoryUsed()
6. getMemoryUsed()
7. getMemoryUsed()
8. getMemoryUsedBytes ()