class Lib_memory
{

    Lib_memory()
    {
    }
    
    public static int free()
    {
        int mem = (int) Runtime.getRuntime().freeMemory();
        return mem;
    }
    
    public static int total()
    {
        int mem = (int) Runtime.getRuntime().totalMemory();
        return mem;
    }
    
}