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Multi Dimensional Array/readme.md

+# Multidimensional Arrays
+
+Multidimensional arrays are arrays of arrays with each element of the array holding the reference of other arrays. 
+These are also known as <a href = "https://www.geeksforgeeks.org/jagged-array-in-java/">Jagged Arrays</a>. A multidimensional array is created by appending one set of square brackets ([]) per dimension. 
+Examples: 
+```java 
+int[][] intArray = new int[10][20]; //a 2D array or matrix
+int[][][] intArray = new int[10][20][10]; //a 3D array
+```
+## Jagged Array
+
+A jagged array is an array of arrays such that member arrays can be of different sizes, 
+i.e., we can create a 2-D array but with a variable number of columns in each row. 
+
+```java
+public class multiDimensional
+{
+	public static void main(String args[])
+	{
+		// declaring and initializing 2D array
+		int arr[][] = { {2,7,9},{3,6,1},{7,4,2} };
+
+		// printing 2D array
+		for (int i=0; i< 3 ; i++)
+		{
+			for (int j=0; j < 3 ; j++)
+				System.out.print(arr[i][j] + " ");
+
+			System.out.println();
+		}
+	}
+}
+```