Print stacktrace to stderr

Author: dounan

examples/src/main/java/io/grpc/examples/advanced/HelloJsonServer.java

@@ -63,7 +63,7 @@ public void run() {
         try {
           HelloJsonServer.this.stop();
         } catch (InterruptedException e) {
-          e.printStackTrace();
+          e.printStackTrace(System.err);
         }
         System.err.println("*** server shut down");
       }

examples/src/main/java/io/grpc/examples/experimental/CompressingHelloWorldServerAllMethods.java

@@ -66,7 +66,7 @@ public void run() {
         try {
           CompressingHelloWorldServerAllMethods.this.stop();
         } catch (InterruptedException e) {
-          e.printStackTrace();
+          e.printStackTrace(System.err);
         }
         System.err.println("*** server shut down");
       }

examples/src/main/java/io/grpc/examples/experimental/CompressingHelloWorldServerPerMethod.java

@@ -53,7 +53,7 @@ public void run() {
         try {
           CompressingHelloWorldServerPerMethod.this.stop();
         } catch (InterruptedException e) {
-          e.printStackTrace();
+          e.printStackTrace(System.err);
         }
         System.err.println("*** server shut down");
       }

examples/src/main/java/io/grpc/examples/header/CustomHeaderServer.java

@@ -52,7 +52,7 @@ public void run() {
         try {
           CustomHeaderServer.this.stop();
         } catch (InterruptedException e) {
-          e.printStackTrace();
+          e.printStackTrace(System.err);
         }
         System.err.println("*** server shut down");
       }

examples/src/main/java/io/grpc/examples/hedging/HedgingHelloWorldServer.java

@@ -57,7 +57,7 @@ public void run() {
         try {
           HedgingHelloWorldServer.this.stop();
         } catch (InterruptedException e) {
-          e.printStackTrace();
+          e.printStackTrace(System.err);
         }
         System.err.println("*** server shut down");
       }

examples/src/main/java/io/grpc/examples/helloworld/HelloWorldServer.java

@@ -47,7 +47,7 @@ public void run() {
         try {
           HelloWorldServer.this.stop();
         } catch (InterruptedException e) {
-          e.printStackTrace();
+          e.printStackTrace(System.err);
         }
         System.err.println("*** server shut down");
       }

examples/src/main/java/io/grpc/examples/manualflowcontrol/ManualFlowControlServer.java

@@ -140,7 +140,7 @@ public void run() {
         try {
           server.shutdown().awaitTermination(30, TimeUnit.SECONDS);
         } catch (InterruptedException e) {
-          e.printStackTrace();
+          e.printStackTrace(System.err);
         }
       }
     });

examples/src/main/java/io/grpc/examples/routeguide/RouteGuideServer.java

@@ -77,7 +77,7 @@ public void run() {
         try {
           RouteGuideServer.this.stop();
         } catch (InterruptedException e) {
-          e.printStackTrace();
+          e.printStackTrace(System.err);
         }
         System.err.println("*** server shut down");
       }