...

src/main/java/com/fasterxml/jackson/core/JsonToken.java

@@ -136,6 +136,7 @@ public enum JsonToken
     /**
      * @param token representation for this token, if there is a
      *   single static representation; null otherwise
+     * @param id Numeric id from {@link JsonTokenId}
      */
     JsonToken(String token, int id)
     {
@@ -172,14 +173,21 @@ public enum JsonToken
     public final char[] asCharArray() { return _serializedChars; }
     public final byte[] asByteArray() { return _serializedBytes; }
 
+    /**
+     * @return {@code True} if this token is {@code VALUE_NUMBER_INT} or {@code VALUE_NUMBER_FLOAT},
+     *   {@code false} otherwise
+     */
     public final boolean isNumeric() { return _isNumber; }
 
     /**
      * Accessor that is functionally equivalent to:
      * <code>
      *    this == JsonToken.START_OBJECT || this == JsonToken.START_ARRAY
      * </code>
-     * 
+     *
+     * @return {@code True} if this token is {@code START_OBJECT} or {@code START_ARRAY},
+     *   {@code false} otherwise
+     *
      * @since 2.3
      */
     public final boolean isStructStart() { return _isStructStart; }
@@ -189,16 +197,28 @@ public enum JsonToken
      * <code>
      *    this == JsonToken.END_OBJECT || this == JsonToken.END_ARRAY
      * </code>
+     *
+     * @return {@code True} if this token is {@code END_OBJECT} or {@code END_ARRAY},
+     *   {@code false} otherwise
      * 
      * @since 2.3
      */
     public final boolean isStructEnd() { return _isStructEnd; }
 
     /**
      * Method that can be used to check whether this token represents
-     * a valid non-structured value. This means all tokens other than
-     * Object/Array start/end markers all field names.
+     * a valid non-structured value. This means all {@code VALUE_xxx} tokens;
+     * excluding {@code START_xxx} and {@code END_xxx} tokens as well
+     * {@code FIELD_NAME}.
+     *
+     * @return {@code True} if this token is a scalar value token (one of
+     *   {@code VALUE_xxx} tokens), {@code false} otherwise
      */
     public final boolean isScalarValue() { return _isScalar; }
+
+    /**
+     * @return {@code True} if this token is {@code VALUE_TRUE} or {@code VALUE_FALSE},
+     *   {@code false} otherwise
+     */
     public final boolean isBoolean() { return _isBoolean; }
 }