chore(java-sample): Move logic out of onFeatureFlags

It's not necessary considering the first request to trigger local
evaluation will synchronously retrieve flag definitions if they're not
yet loaded.

Author: dustinbyrne

posthog-samples/posthog-java-sample/src/main/java/com/posthog/java/sample/PostHogJavaExample.java

@@ -12,47 +12,20 @@
  * Simple Java 1.8 example demonstrating PostHog usage
  */
 public class PostHogJavaExample {
-    private static PostHogInterface postHog;
 
     public static void main(String[] args) {
         PostHogConfig config = PostHogConfig
-                .builder("phc_qYXiHw5odMiVWF7Dwh2sHWS7Hj6FsutBNp2SEaMqS0A")
-                .personalApiKey("phx_example")
+                .builder("phc_wxtaSxv9yC8UYxUAxNojluoAf41L8p6SJZmiTMtS8jA")
+                .personalApiKey("phs_DuaFTmUtxQNj5R2W03emB1jMLIX5XwDvrt3DKfi5uYNcxzd")
                 .host("http://localhost:8010")
                 .localEvaluation(true)
                 .debug(true)
-                .onFeatureFlags(() -> {
-                    if (postHog.isFeatureEnabled("distinct-id", "beta-feature", false)) {
-                        System.out.println("The feature is enabled.");
-                    }
-
-                    Object flagValue = postHog.getFeatureFlag("distinct-id", "multi-variate-flag", "default");
-                    String flagVariate = flagValue instanceof String ? (String) flagValue : "default";
-                    Object flagPayload = postHog.getFeatureFlagPayload("distinct-id", "multi-variate-flag");
-
-                    System.out.println("The flag variant was: " + flagVariate);
-                    System.out.println("Received flag payload: " + flagPayload);
-
-                    Boolean hasFilePreview = postHog.isFeatureEnabled(
-                            "distinct-id",
-                            "file-previews",
-                            PostHogFeatureFlagOptions
-                                    .builder()
-                                    .defaultValue(false)
-                                    .personProperty("email", "[email protected]")
-                                    .build());
-
-                    System.out.println("File previews enabled: " + hasFilePreview);
-
-                    postHog.flush();
-                    postHog.close();
-                })
                 .build();
 
-        postHog = PostHog.with(config);
+        PostHogInterface posthog = PostHog.with(config);
 
-        postHog.group("distinct-id", "company", "some-company-id");
-        postHog.capture(
+        posthog.group("distinct-id", "company", "some-company-id");
+        posthog.capture(
                 "distinct-id",
                 "new-purchase",
                 PostHogCaptureOptions
@@ -63,14 +36,40 @@ public static void main(String[] args) {
 
         HashMap<String, Object> userProperties = new HashMap<>();
         userProperties.put("email", "[email protected]");
-        postHog.identify("distinct-id", userProperties);
+        posthog.identify("distinct-id", userProperties);
 
         // AVOID - Anonymous inner class holds reference to outer class.
         // The following won't serialize properly.
-        // postHog.identify("user-123", new HashMap<String, Object>() {{
+        // posthog.identify("user-123", new HashMap<String, Object>() {{
         // put("key", "value");
         // }});
 
-        postHog.alias("distinct-id", "alias-id");
+        posthog.alias("distinct-id", "alias-id");
+
+        // Feature flag examples with local evaluation
+        if (posthog.isFeatureEnabled("distinct-id", "beta-feature", false)) {
+            System.out.println("The feature is enabled.");
+        }
+
+        Object flagValue = posthog.getFeatureFlag("distinct-id", "multi-variate-flag", "default");
+        String flagVariate = flagValue instanceof String ? (String) flagValue : "default";
+        Object flagPayload = posthog.getFeatureFlagPayload("distinct-id", "multi-variate-flag");
+
+        System.out.println("The flag variant was: " + flagVariate);
+        System.out.println("Received flag payload: " + flagPayload);
+
+        Boolean hasFilePreview = posthog.isFeatureEnabled(
+                "distinct-id",
+                "file-previews",
+                PostHogFeatureFlagOptions
+                        .builder()
+                        .defaultValue(false)
+                        .personProperty("email", "[email protected]")
+                        .build());
+
+        System.out.println("File previews enabled: " + hasFilePreview);
+
+        posthog.flush();
+        posthog.close();
     }
 }