1 files changed, 30 insertions, 1 deletions
diff --git a/java/src/com/zerotierone/sdk/ResultCode.java b/java/src/com/zerotierone/sdk/ResultCode.java
index 7597c0f2..bb73f68c 100644
--- a/java/src/com/zerotierone/sdk/ResultCode.java
+++ b/java/src/com/zerotierone/sdk/ResultCode.java
@@ -27,12 +27,41 @@
 
 package com.zerotierone.sdk;
 
+/**
+ * Function return code: OK (0) or error results
+ *
+ * <p>Use {@link ResultCode#isFatal) to check for a fatal error. If a fatal error
+ * occurs, the node should be considered to not be working correctly. These
+ * indicate serious problems like an inaccessible data store or a compile
+ * problem.</p>
+ */
 public enum ResultCode {
-
+    /**
+     * Operation completed normally
+     */
 	RESULT_OK(0),
+
+    // Fatal errors (> 0, < 1000)
+    /**
+     * Ran out of memory
+     */
 	RESULT_FATAL_ERROR_OUT_OF_MEMORY(1),
+
+    /**
+     * Data store is not writable or has failed
+     */
 	RESULT_FATAL_ERROR_DATA_STORE_FAILED(2),
+
+    /**
+     * Internal error (e.g. unexpected exception indicating bug or build problem)
+     */
 	RESULT_FATAL_ERROR_INTERNAL(3),
+
+    // non-fatal errors
+
+    /**
+     * Network ID not valid
+     */
 	RESULT_ERROR_NETWORK_NOT_FOUND(1000);
 	
 	private final int id;