Merge pull request #17054 from sk1418/impr-array-length

[impr-array-length] array length

Author: theangrydev

core-java-modules/core-java-arrays-guides/src/main/java/com/baeldung/array/ArrayReferenceGuide.java

@@ -1,5 +1,6 @@
 package com.baeldung.array;
 
+import java.lang.reflect.Array;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
@@ -14,6 +15,8 @@ public static void main(String[] args) {
 
         initialization();
 
+        getLength();
+
         access();
 
         iterating();
@@ -44,6 +47,16 @@ private static void initialization() {
         int[] anotherArray = new int[] {1, 2, 3, 4, 5};
     }
 
+    private static void getLength() {
+        int[] anArray = new int[] { 1, 2, 3, 4, 5 };
+        System.out.println("anArray's length: " + anArray.length);
+
+        System.out.println("[Array.getLength()] anArray's length: " + Array.getLength(anArray));
+
+        Object arrayAsObj = anArray;
+        System.out.println("the array Object (anArray) 's length: " + Array.getLength(arrayAsObj));
+    }
+
     private static void access() {
         int[] anArray = new int[10];
         anArray[0] = 10;
@@ -156,4 +169,4 @@ private static void merge() {
         }
     }
 
-}
+}