How to determine length or size of an Array in Java?
There is no size() method available with the array. But there is a length field available in the array that can be used to find the length or size of the array.
array.length: length is a final variable applicable for arrays. With the help of the length variable, we can obtain the size of the array.
Examples:
int size = arr[].length; // length can be used // for int[], double[], String[] // to know the length of the arrays.
Below is the illustration of how to get the length of array[] in Java using length variable:
Example 1:
// Java program to illustrate // how to get the length of the array public class Test { public static void main(String[] args) { // Here array is the // array name of int type int[] array = new int[4]; System.out.println("The size of " + "the array is " + array.length); } } |
Output:
The size of the array is 4
Example 2:
// Java program to illustrate // how to get the length of the array public class Test { public static void main(String[] args) { // Here str is the array name // of String type. String[] str = { "GEEKS", "FOR", "GEEKS" }; System.out.println("The size of " + "the array is " + str.length); } } |
Output:
The size of the array is 3
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