How to find Length of Array

public class Main 
{
  public static void main(String args[])
  {
    int[] a = {1,2,3,4,5};
    System.out.println("Length of array " + a.length);
  }
}

Two Dimensional Array – Java

  class Main
  {
    public static void main(String args[])
    {
      int[][] a = {{1,2}, {3,4}};
      System.out.println("Content of array " + a[0][1]);     
      System.out.println("Length of array " + a[0].length);
    }
  }

OP: Content of array 2
Length of array 2

public class Main11
{
public static void main(String args[])
{
String[] arrName = new String[5];
int[] arrAge = {21, 25, 24, 26, 27};
char[] arrSection = {'A', 'B', 'C', 'D', 'E'};

arrName[0] = "Mugil";
arrName[1] = "Vinu";
arrName[2] = "Madhavan";
arrName[3] = "Adhavan";
arrName[4] = "Suryan";

//Method 1
for(int i=0;i<arrName.length;i++)
{
if(arrName[i] != null)
System.out.println(arrName[i]);
}

//Method 2
//For - Each Method
for(String item : arrName)
{
System.out.println(item);
}

//Method 3
int j =0;
while(j<arrAge.length)
{
System.out.println(arrAge[j]);
j++;
}

//Method 4
int k=0;
do
{
System.out.println(arrSection[k]);
k++;
}while(k<arrSection.length);
}
}