52 : Introduction to Array

Introducing Array

int [] ArrayName  = new int [10] - here 10 means I want 10 times.

 You can use this 

int [] Number;

Number = new int [5];

or

int [] Number = new int [5];

To print the result you can write like this:

int [] number = new int [5];

number [0] = 10;

number [1] = 10;

number [2] = 10;

number [3] = 10;

number [4] = 10;

System.out.println(number[0]);

Then run it.

if you want you can add more Array, like this :

int [] number = new int [5];

int [] number2 = new int [10];

To know Array size or how many Array is there, you can write :

number [0] = 10;

number [1] = 10;

number [2] = 10;

number [3] = 10;

number [4] = 10;

int len = number.length; // Array size

System.out.println("Array size = "+ len);

result will be:

Array size = 5

To get the sum:

int sum = number [0] + number [1] + number [2] + number [3] + number [4];

System.out.println ("Array Sum =" +sum);

At Class:

package ArrayFolder;

public class ArratList {

public static void main(String[] args) {

// TODO Auto-generated method stub

int [] number = new int [5];

int [] number2 = new int [10];

number [0] = 10;

number [1] = 10;

number [2] = 10;

number [3] = 10;

number [4] = 5;

int len = number.length; // Array size

System.out.println("Array size = "+ len);

System.out.println(number[0]);

int sum = number [0] + number [1] + number [2] + number [3] + number [4];

System.out.println ("Array Sum =" +sum);

}

}

Result:

Array size = 5

10

Array Sum =45