Release Physical memory

Question

I am using Sigar dll for showing Physical memory...
class Memory()
ArrayList<HashMap> al=new ArrayList<HashMap>();
      public void EatMemory()
          while(!Stop)
            al.add(new HashMap());
          //Condition here
              //  Stop=true;
}and on button click event in the main form I create Memory object and call EatMemory() method
Memory mem=new Memory();
mem.EatMemory();and also I have a timer run method which shows physical and virtual memory of the system every second.
Sigar s=new Sigar();
Runtime r=Runtime.getRuntime();
Mem m;
            public void run(){
                try{
                    m=s.getMem();
                    long ActualUsed=m.getActualUsed()/1024;//in kilobytes
                    long ActualFree=m.getActualFree()/1024;//in kilobytes
                    long PhyTotal=m.getTotal()/1024;//in kilobytes
                    int perc=(int)m.getUsedPercent();
                    long VMTotal=r.totalMemory()/1024;
                    long VMFree=r.freeMemory()/1024;
                    long VMused=VMTotal-VMFree;
                    int vmperc=  (int)((new Double(VMused) / new Double(VMTotal))*100);
                    jlUsedMem.setText(String.valueOf(ActualUsed) );
                    jlFreeMem.setText(String.valueOf(ActualFree) );
                    jlTotalMem.setText(String.valueOf(PhyTotal) );
                    jlVMUsed.setText(String.valueOf(VMused));
                    jlVMFree.setText(String.valueOf(VMFree));
                    jlVMTotal.setText(String.valueOf(VMTotal));
                    jpbMemoryUsage.setValue(perc);
                    jpbaMemory.setValue(perc);
                    jpbVMMemoryUsage.setValue(vmperc);
            catch(Exception ex)
}After EatMemory() method call Physical and Virtual memory increases and match the required condtion, when EatMemory() Method completes I call Runtime.getRuntime().gc() on another button event, after that Virtual Memory release memory but physical memory does not release memory. If I restart application then physical memory releases. How can it possible that like the way through which I release virtual memory, I am also release physical memory?

Answer 1

Faisal_Ahmed wrote:
need help...How are we supposed to know you didn't already get help somewhere else? Crossposting in several places makes people not help you in any of them.