diff --git a/bindings/java/src/net/hyperic/sigar/SigarInvoker.java b/bindings/java/src/net/hyperic/sigar/SigarInvoker.java
index 7e3cde96..96506e5d 100644
--- a/bindings/java/src/net/hyperic/sigar/SigarInvoker.java
+++ b/bindings/java/src/net/hyperic/sigar/SigarInvoker.java
@@ -183,7 +183,7 @@ public class SigarInvoker {
     }
 
     public Object invoke(Object arg, String attr)
-        throws SigarException {
+        throws SigarException, SigarNotImplementedException {
 
         Object[] args = null;
 
@@ -200,7 +200,7 @@ public class SigarInvoker {
     }
 
     public Object invoke(Object[] args, String attr)
-        throws SigarException {
+        throws SigarException, SigarNotImplementedException {
 
         Method typeGetter, attrGetter;
         Object typeObject, attrObject;
@@ -219,6 +219,9 @@ public class SigarInvoker {
             String msg = "Failed to invoke " + 
                 typeGetter.getName() + parms +
                 ": " + t.getMessage();
+            if (t instanceof SigarNotImplementedException) {
+                throw (SigarNotImplementedException)t;
+            }
             throw new SigarException(msg);
         }
 
diff --git a/bindings/java/src/net/hyperic/sigar/jmx/SigarInvokerJMX.java b/bindings/java/src/net/hyperic/sigar/jmx/SigarInvokerJMX.java
index 63d8b20e..2c3ed3e4 100644
--- a/bindings/java/src/net/hyperic/sigar/jmx/SigarInvokerJMX.java
+++ b/bindings/java/src/net/hyperic/sigar/jmx/SigarInvokerJMX.java
@@ -5,6 +5,7 @@ import java.util.StringTokenizer;
 
 import net.hyperic.sigar.SigarException;
 import net.hyperic.sigar.SigarInvoker;
+import net.hyperic.sigar.SigarNotImplementedException;
 import net.hyperic.sigar.SigarProxy;
 import net.hyperic.sigar.util.ReferenceMap;
 
@@ -171,7 +172,7 @@ public class SigarInvokerJMX extends SigarInvoker {
      * @exception SigarException If invocation fails.
      */
     public Object invoke(String attr)
-        throws SigarException {
+        throws SigarException, SigarNotImplementedException {
 
         return super.invoke(getArg(), attr);
     }