Java – Jagged Arrays

Jagged Array in Java:

• It is an array of arrays, in which each element is an array in turn.
• A special feature of this array type is that it is a Multidimensional array whose different sizes each element can have.

Create & Initialize Jagged Array

• You only define the first dimension, which represents a number of rows in the array, when constructing an array of arrays. 
• You can construct a jagged array of two dimensions, as follows:
  • int myarr1[][] = new int[3][];

• Within the above statement a two-dimensional array of three rows is declared.   When the array is declared, as shown below, you may describe it as a Jagged Array:
  • Myarr1[1] = new int[2];
  • myarray1[2] = new int[3];  
  • myarray1[3] = new int[4];

class Main 
{
	publicstaticvoid main(String[] args) 
	{
		intmyarr[][] = newint[3][];
		myarr[0] = newint[] { 1, 2, 3 };
		myarr[1] = newint[] { 4, 5 };
		myarr[2] = newint[] { 6, 7, 8, 9, 10 };
		System.out.println("Two dimensional Jagged Array:");
		for (inti = 0; i<myarr.length; i++) {
			for (intj = 0; j<myarr[i].length; j++)
				System.out.print(myarr[i][j] + " ");
			System.out.println();
		}
	}
}