--- old/src/jdk.accessibility/windows/native/common/AccessBridgeDebug.cpp	2018-09-14 14:36:08.236591500 +0530
+++ new/src/jdk.accessibility/windows/native/common/AccessBridgeDebug.cpp	2018-09-14 14:36:06.754643400 +0530
@@ -31,11 +31,32 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <windows.h>
+#include <cstdlib>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+static FILE* logFP = nullptr;
+static char* filePath = nullptr;
+
+void initializeFileLogger() {
+        const char* var = "JAVA_ACCESSBRIDGE_LOGFILE";
+        filePath = getenv(var);
+        if (filePath != nullptr) {
+                logFP = fopen(filePath, "w");
+                if (logFP == nullptr) {
+                        PrintDebugString("couldnot open file %s", filePath);
+                }
+        }
+}
+
+void finalizeFileLogger() {
+        if (logFP) {
+                fclose(logFP);
+                logFP = nullptr;
+        }
+}
 /**
  * print a GetLastError message
  */
@@ -89,6 +110,12 @@
         printf("\r\n");
 #endif
 #endif
+        if (logFP) {
+                va_list args;
+                va_start(args, msg);
+                vfprintf(logFP, msg, args);
+                va_end(args);
+        }
     }
 
     /**
@@ -109,6 +136,12 @@
         printf("\r\n");
 #endif
 #endif
+        if (logFP) {
+                va_list args;
+                va_start(args, msg);
+                vfprintf(logFP, msg, args);
+                va_end(args);
+        }
     }
     /**
      * Wide version of the method to send debugging info to the appropriate place
@@ -130,6 +163,12 @@
         printf("\r\n");
 #endif
 #endif
+        if (logFP) {
+                va_list args;
+                va_start(args, msg);
+                vfwprintf(logFP, msg, args);
+                va_end(args);
+        }
     }
 
     /**
@@ -152,6 +191,12 @@
         printf("\r\n");
 #endif
 #endif
+        if (logFP){
+                va_list args;
+                va_start(args, msg);
+                vfwprintf(logFP, msg, args);
+                va_end(args);
+        }
     }
 #ifdef __cplusplus
 }