Java Program to Find the Number of Elements in an Array

This is a Java Program to Find the Number of Elements in an Array.

An array consisting of any number of elements is given. Now we take a variable and each time we encounter the next element of array it gets incremented. Hence we get the variable value as length of array. Also we can use inbuilt method length to find array length.

Here is the source code of the Java Program to Find the Number of Elements in an Array. The Java program is successfully compiled and run on a Windows system. The program output is also shown below.

  1. public class Length
  2. {
  3.     public static void main(String[] args) 
  4.     {
  5.         int a[] = {1,2,3,4,5};
  6.         int count = 0, i = 0, n;
  7.         try
  8.         {
  9.             while(a[i] != 'a')
  10.             {
  11.                 count++;
  12.                 i++;
  13.             }
  14.         }
  15.         catch(Exception e)
  16.         {
  17.             System.out.println("Number of elements in array:"+count);
  18.         }
  19.         n = a.length;
  20.         System.out.println("Number of elements(Using inbuilt method named length):"+n);
  21.     }
  22. }


$ javac
$ java Length
Number of elements in array:5
Number of elements(Using inbuilt method named length):5

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