Arrary in java with example

Array: - 

An array represents a group of elements of same data type. .

                                                         OR

              An array is collection of elements with same data type.

They are two type :

1) Single dimensional array.

 2) Two dimensional arrays  OR  (multi dimensional array).

1) Single dimensional arrays : - 

A Single dimensional array represents is a single row or a single column of an elements.

Syntax:-   

       Datatype arrayvariablename[]=new datatype[size];

       Int a[]=new int[5];

                                        OR

     Datatype arrayname[]={var1,var2,….,varn};

     Int a[]={2,4,…,n};

Single dimensional array stores values:-

2) Two dimensional arrays : - 

A Two dimensional array represents is a several rows and columns of an elements.

Syntax:-   

       Datatype arrayvariablename[][]=new datatype[row size][column size];

       Int a[][]=new int[5][5];

                                        OR

     Datatype arrayname[][]={{var1,var2,….,varn},{var1,var2,….,varn},…..,{ var1,var2,….,varn }};

     Int a[]={{11,12,13,14,15},{21,22,23,24,25},{31,32,33,3,4,35}};

Two dimensional array stores values:-

Example Program:-

public class Array_Example {

              public static void main(String args[]){

             int[] a=new int[5];

                  for(int i=0;i<5;i++){

                      a[i]=i+1;

                      System.out.println(""+a[i]);

                  }

          }

   }