diff --git a/bindings/java/src/jni/javasigar.c b/bindings/java/src/jni/javasigar.c
index 2da5a03c..307f0710 100644
--- a/bindings/java/src/jni/javasigar.c
+++ b/bindings/java/src/jni/javasigar.c
@@ -1054,8 +1054,8 @@ typedef BOOL (CALLBACK *QueryServiceStatusExFunc)(SC_HANDLE,
                                                   LPDWORD);
 #endif
 
-JNIEXPORT jlong SIGAR_JNI(ptql_WindowsServiceQuery_getServicePid)
-(JNIEnv *env, jclass classinstance, jstring jname)
+JNIEXPORT jlong SIGAR_JNI(Sigar_getServicePid)
+(JNIEnv *env, jobject sigar_obj, jstring jname)
 {
 #ifdef WIN32
     const char *name;
@@ -1063,6 +1063,7 @@ JNIEXPORT jlong SIGAR_JNI(ptql_WindowsServiceQuery_getServicePid)
     jlong pid = 0;
     DWORD err = ERROR_SUCCESS;
     SC_HANDLE mgr;
+    dSIGAR(0);
 
     name = JENV->GetStringUTFChars(env, jname, &is_copy);
 
@@ -1118,10 +1119,7 @@ JNIEXPORT jlong SIGAR_JNI(ptql_WindowsServiceQuery_getServicePid)
     }
 
     if (err != ERROR_SUCCESS) {
-        /* XXX need sigar for sigar_strerror */
-        char msg[256];
-        sprintf(msg, "error=%d", err);
-        sigar_throw_exception(env, msg);
+        sigar_throw_error(env, sigar, err);
     }
 
     return pid;
diff --git a/bindings/java/src/net/hyperic/sigar/Sigar.java b/bindings/java/src/net/hyperic/sigar/Sigar.java
index d9f70e1f..56073440 100644
--- a/bindings/java/src/net/hyperic/sigar/Sigar.java
+++ b/bindings/java/src/net/hyperic/sigar/Sigar.java
@@ -125,6 +125,14 @@ public class Sigar implements SigarProxy {
      */
     public native long getPid();
 
+
+    /**
+     * Get pid for the Windows service with the given name.
+     * This method is implemented on Windows only as a helper
+     * for PTQL.
+     */
+    public native long getServicePid(String name);
+
     /**
      * Send a signal to a process.
      *
diff --git a/bindings/java/src/net/hyperic/sigar/SigarProxy.java b/bindings/java/src/net/hyperic/sigar/SigarProxy.java
index 7f5e3bb4..278655b7 100644
--- a/bindings/java/src/net/hyperic/sigar/SigarProxy.java
+++ b/bindings/java/src/net/hyperic/sigar/SigarProxy.java
@@ -13,6 +13,8 @@ public interface SigarProxy {
 
     public long getPid();
 
+    public long getServicePid(String name);
+
     public Mem getMem() throws SigarException;
 
     public Swap getSwap() throws SigarException;
diff --git a/bindings/java/src/net/hyperic/sigar/ptql/WindowsServiceQuery.java b/bindings/java/src/net/hyperic/sigar/ptql/WindowsServiceQuery.java
index b2909569..e3fb2a31 100644
--- a/bindings/java/src/net/hyperic/sigar/ptql/WindowsServiceQuery.java
+++ b/bindings/java/src/net/hyperic/sigar/ptql/WindowsServiceQuery.java
@@ -8,8 +8,6 @@ public class WindowsServiceQuery implements ProcessQuery {
 
     private String name;
 
-    public static native long getServicePid(String name);
-
     public WindowsServiceQuery(String name) {
         this.name = name;
     }
@@ -17,11 +15,11 @@ public class WindowsServiceQuery implements ProcessQuery {
     public boolean match(SigarProxy sigar, long pid) 
         throws SigarException {
 
-        return pid == getServicePid(this.name);
+        return pid == sigar.getServicePid(this.name);
     }
 
     public static void main(String[] args) throws Exception {
         Sigar sigar = new Sigar(); //load the .dll
-        System.out.println(getServicePid(args[0]));
+        System.out.println(sigar.getServicePid(args[0]));
     }
 }