From 6fb6bd3e6100189441c679c281286d5b580d2c67 Mon Sep 17 00:00:00 2001
From: Hao Chen <chenh1024@gmail.com>
Date: Fri, 31 Jul 2020 15:35:43 +0800
Subject: [PATCH] Refine Java "Ray Core Walkthrough" doc (#9836)

---
 doc/source/walkthrough.rst | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/doc/source/walkthrough.rst b/doc/source/walkthrough.rst
index fe9281a8c..f73e9d619 100644
--- a/doc/source/walkthrough.rst
+++ b/doc/source/walkthrough.rst
@@ -10,7 +10,7 @@ This walkthrough will overview the core concepts of Ray:
 
 With Ray, your code will work on a single machine and can be easily scaled to large cluster.
 
-Java demo code in this documentation can be found `here <https://github.com/ray-project/ray/blob/master/java/test/src/main/java/io/ray/docdemo/WalkthroghDemo.java>`__.
+Java demo code in this documentation can be found `here <https://github.com/ray-project/ray/blob/master/java/test/src/main/java/io/ray/docdemo/WalkthroughDemo.java>`__.
 
 Installation
 ------------
@@ -113,9 +113,11 @@ Ray enables arbitrary functions to be executed asynchronously. These asynchronou
       // The result can be retrieved with ``ObjectRef::get``.
       Assert.assertTrue(res.get() == 1);
 
-      public static int slowFunction() throws InterruptedException {
-        TimeUnit.SECONDS.sleep(10);
-        return 1;
+      public class MyRayApp {
+        public static int slowFunction() throws InterruptedException {
+          TimeUnit.SECONDS.sleep(10);
+          return 1;
+        }
       }
 
       // Invocations of Ray remote functions happen in parallel.
@@ -149,8 +151,10 @@ Passing object refs to remote functions
 
   .. code-tab:: java
 
-    public static int functionWithAnArgument(int value) {
-      return value + 1;
+    public class MyRayApp {
+      public static int functionWithAnArgument(int value) {
+        return value + 1;
+      }
     }
 
     ObjectRef<Integer> objRef1 = Ray.task(MyRayApp::myFunction).remote();