src/java.desktop/windows/classes/sun/print/PrintServiceLookupProvider.java

*** 401,417 ****
         Hence an alternative mechanism is choosen via the EnumPrinters by polling for the
         count of printer status changes(add\remove) and based on it update the printers
         list.
      */
      class RemotePrinterChangeListener implements Runnable {
!         private String[] prevRemotePrinters;
  
          RemotePrinterChangeListener() {
              prevRemotePrinters = getRemotePrintersNames();
          }
  
          boolean doCompare(String[] str1, String[] str2) {
              if (str1.length != str2.length) {
                  return true;
              } else {
                  for (int i = 0;i < str1.length;i++) {
                      for (int j = 0;j < str2.length;j++) {
--- 401,423 ----
         Hence an alternative mechanism is choosen via the EnumPrinters by polling for the
         count of printer status changes(add\remove) and based on it update the printers
         list.
      */
      class RemotePrinterChangeListener implements Runnable {
!         private String[] prevRemotePrinters = null;
  
          RemotePrinterChangeListener() {
              prevRemotePrinters = getRemotePrintersNames();
          }
  
          boolean doCompare(String[] str1, String[] str2) {
+             if (str1 == null && str2 == null) {
+                 return false;
+             } else if ((str1 == null && str2 != null) || (str2 == null && str1 != null)) {
+                 return true;
+             }
+ 
              if (str1.length != str2.length) {
                  return true;
              } else {
                  for (int i = 0;i < str1.length;i++) {
                      for (int j = 0;j < str2.length;j++) {
*** 426,445 ****
--- 432,455 ----
          }
  
          @Override
          public void run() {
              while (true) {
+                 if (prevRemotePrinters != null) {
                      String[] currentRemotePrinters = getRemotePrintersNames();
                      if (doCompare(prevRemotePrinters, currentRemotePrinters)) {
  
                          // updated the printers data
                          // printers list now contains both local and network printer data
                          refreshServices();
  
                          // store the current data for next comparison
                          prevRemotePrinters = currentRemotePrinters;
                      }
+                 } else {
+                     prevRemotePrinters = getRemotePrintersNames();
+                 }
  
                  try {
                      Thread.sleep(minRefreshTime * 1000);
                  } catch (InterruptedException e) {
                      break;