Standard MBean

MBeanServer mbs = ...
            
something...;
ObjectName name =
    new ObjectName("com.example:type=Memory");
             
MemoryUsage memoryUsage =  
            
(MemoryUsage)
     mbs.getAttribute(name, "MemoryUsage");
long used = memoryUsage.
            
getUsed();</td>
          

MXBean

MBeanServer mbs = ...
            
something...;
ObjectName name =
    new ObjectName("com.example:type=Memory");
             
CompositeData memoryUsage =  
            
(CompositeData)
     mbs.getAttribute(name, "MemoryUsage");
long used =  
            
(Long) memoryUsage.
            
get("Used");