Java -Arrays

Array - data structure that allows us to store multiple values of the same type into a single variable

Default value - zero
Arrays are zero indexed - Array with ten elements will be indexed from 0 to 9
Array[]

How to create array:

1. int[] array = new int[5]; (boxes have value zero - secured slot in memory to hold values)
2. int[] myArray = {1,2,3,4,5}; this type of initializing an array is also known as an anonymous array

boolean type arrays - default value is false

Errors while working with arrays

1. ArrayIndexOutOfBoundsExeption

int[] my Array = {10,35,45,78,55}

myArray[5] = 55; out of bound

index 5 does not exist







int[] myArray = {10,15,20,17,18};




for (int i=1; i < myArray.lenght; i++) 


System.out.println("value= " + myArray[i]


it will return values from index 1

How to print out simple int array?

example:

int[] myArray = new int[2];myArray[0]=0;myArray[1]=1;

System.out.println("My array: " + 
        Arrays.toString(myArray));

static String

toString(int[] a) Returns a string representation of the contents of the specified array.

public class Arrays - This class contains various methods for manipulating arrays (such as sorting and searching). This class also contains a static factory that allows arrays to be viewed as lists.