No array size() method is available. However, the array contains a length field that can be used to specify the length or size of the array.

array.length: length is a finite variable that applies to arrays. With the help of variable length we can determine 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 an illustration of how to get length of array[] in Java with variable length:

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