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Array in Java
Array in Java
- It is a collection of data of same data type.
- It is used to store group of data simultaneously.
- It can store data of same data type means an integer array can store only integer value ,character array can store only character value and so on.
- We can not fetch data from array directly therefore we use index point.
- The indexing of array always start with 0.
- Index value is always an integer number.
- Array may be of any data type like int,char,float etc.
- Here a is the name of array.
- int is the data type of array.
- Size of array is 5 means we can store maximum 5 values in this array.
int ar[]={45,23,89,12,78};
int a[]=new int[5]; a[0]=45; a[1]=23; a[2]=89; a[3]=12; a[4]=78;
class Easy
{
public static void main(String[] args)
{
//array declaration
int ar[]={10,50,80,40,60};
System.out.println("Value at ar[0]="+ar[0]);
System.out.println("Value at ar[1]="+ar[1]);
System.out.println("Value at ar[2]="+ar[2]);
System.out.println("Value at ar[3]="+ar[3]);
System.out.println("Value at ar[4]="+ar[4]);
}
}
/*
### Output ###
Value at ar[0]=10
Value at ar[1]=50
Value at ar[2]=80
Value at ar[3]=40
Value at ar[4]=60
*/
class Easy
{
public static void main(String[] args)
{
//array declaration
int ar[]={10,50,80,40,60};
for(int i=0;i<=4;i++)
System.out.println("Value at ar["+i+"]="+ar[i]);
}
}
/*
### Output ###
Value at ar[0]=10
Value at ar[1]=50
Value at ar[2]=80
Value at ar[3]=40
Value at ar[4]=60
*/
import java.util.Scanner;
class Easy
{
public static void main(String[] args)
{
Scanner in=new Scanner(System.in);
//array declaration
int ar[]=new int[5];
int i;
for(i=0;i<=4;i++)
{
System.out.println("Enter element at "+(i+1));
ar[i]=in.nextInt();
}
for(i=0;i<=4;i++)
System.out.println("Value at ar["+i+"]="+ar[i]);
}
}
/*
### Output ###
Enter element at 1
15
Enter element at 2
25
Enter element at 3
53
Enter element at 4
10
Enter element at 5
95
Value at ar[0]=15
Value at ar[1]=25
Value at ar[2]=53
Value at ar[3]=10
Value at ar[4]=95
*/