Array
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->Collection of similar type of elements which is stored into contigeous memory location called 
as array.

-> store only fixed number of elements in array-  5

-> Array is index based-> first element(34)- store- 0th index
   second element(21)- store-1st index


Advantages-
Random access- we can get the specific location data based on index position



Disadvantages-

size limit-  store fixed size of elements

Array- size 5- only 5 elements not 6


2 types of array

->Single Dimensional Array (focus on this only)

->Multi Dimensional Array(not used in company)


syntax-


dataType[] arrayname; or

dataType []arrayname; or

dataType arrayname[];

Example- 1

public static void main(String args[])

String is data type
args is arrayname


Example-2
int a[5];   //int is data type and a is arrayname and 5 is size


****How to instantiation array in java********
instance means object



syntax

datatype array referencevariablename or objectname=new  datatype[size];

Example

int [] a=new int[5]; //store only 5 elements not 6


Implementation->

Example-1



Example-2




Example-3-  

How to iterate the array using for each loop in java



syntax-



for(dataType variablename: arrayname){

//body of loop here 

}


-Write a java program to find out largest number in given array


[ 10, 50, 20, 40]  - output should be 50