update graalvm version

Author: alexcheng1982

.github/workflows/maven.yml

@@ -13,8 +13,8 @@ jobs:
       - uses: actions/checkout@v4
       - uses: graalvm/setup-graalvm@v1
         with:
-          java-version: '21'
-          distribution: 'graalvm-community'
+          java-version: '25'
+          distribution: 'graalvm'
           github-token: ${{ secrets.GITHUB_TOKEN }}
           cache: maven
       - name: Build with Maven

src/main/java/com/javaaidev/agent/SimpleChatController.java

@@ -1,16 +1,13 @@
 package com.javaaidev.agent;
 
+import static com.javaaidev.agent.Constants.SYSTEM_TEXT;
+
 import org.springframework.ai.chat.client.ChatClient;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 
 public class SimpleChatController {
 
-  public static final String SYSTEM_TEXT = """
-      You are a chef who is proficient in various cuisines. Please answer users' questions about cooking.
-      For other unrelated inputs, simply tell the user that you don't know.
-      """;
-
   private final ChatClient chatClient;
 
   public SimpleChatController(ChatClient.Builder builder) {