Java Utililty Methods Memory Free

List of utility methods to do Memory Free

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Description

The list of methods to do Memory Free are organized into topic(s).

Method

booleanbelowMemoryLimit(int percentFree)
below Memory Limit 
long max = Runtime.getRuntime().maxMemory() / 1000;
long free = freeMemory();
if ((double) free / max * 100 < percentFree)
    return true;
return false;
booleancheckFreeMemory(long requiredMemory)
Check if there is enough free memory. 
if (Runtime.getRuntime().freeMemory() >= requiredMemory) {
    return true;
return false;
StringformatMemorySize(Long afreeDiskSpace)
format Memory Size 
freeDiskSpace = afreeDiskSpace;
if (afreeDiskSpace < 1024) {
    return "Free Disk Space: " + afreeDiskSpace + "B";
} else if (afreeDiskSpace < 1048576) {
    return "Free Disk Space: " + afreeDiskSpace / 1024 + "KB";
} else if (afreeDiskSpace < 1073741824) {
    return "Free Disk Space: " + afreeDiskSpace / 1048576 + "MB";
} else {
...
longfreeAllocatedMemory()
Returns the amount of free memory in the Java Virtual Machine. 
return Runtime.getRuntime().freeMemory();
longfreeMemory()
free Memory 
return Runtime.getRuntime().freeMemory();
voidfreeMemory()
Utility to free memory 
long total = Runtime.getRuntime().totalMemory();
for (int i = 0; i < 10; i++) {
    System.gc();
while (true) {
    System.gc();
    long newtotal = Runtime.getRuntime().totalMemory();
    if ((((double) (total - newtotal)) / (double) total) < 0.1) {
...
voidfreeMemory()
free Memory 
try {
    System.gc();
    System.gc();
    Thread.currentThread().sleep(250);
    System.runFinalization();
    System.runFinalization();
    Thread.currentThread().sleep(250);
    System.gc();
...
longfreeMemory()
Wrapper around Runtime.getRuntime().freeMemory() 
return Runtime.getRuntime().freeMemory();
longfreeMemory()
free Memory 
return runtime.freeMemory();
intfreeMemorym()
free Memorym 
return (int) Math.floor((freeMemoryb() / megabytes));