Single dimension arrays

This section contains the detail about the Single dimension arrays in java.

Single dimension arrays

An array is the set of similar type of elements which is stored under a common name. An array can acquire any type and can have one or more dimensions. The element in array can be accessed by it's index. For storing related information under the same roof , we use arrays.

Declaring one dimension array 

type var-name[ ];

For example :

If an array is declared as : int Dev[3], it means it has 4 element from Dev[0] to Dev[3].

Allocating memory to arrays :

var-name = new type[size];  

Example :

Dev = new int[12];

Assigning and accessing value from array

You can assign value directly, like this :

Dev[0] = 12; // this will assign value to first element.
Dev[1] = 30  // this will assign value to second element.

Array can also be assigned when they are declared as :

int Dev[] = {3, 12, 21, 30, 39, 48};

You can access array element like this :

System.out.println(Dev[3]);   // This will print 4th element of array.

Example :

public class DevArray {
public static void main(String[] args) {
double[] devList = {1.9, 2.9, 3.4, 3.5};

// Print all the array elements
for (double element: devList) {
System.out.println(element);
}
}
}

Output :

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