JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

Publish Your Article Here

Java One Dimensional Arrays

One dimensional array is a list of same typed variables. To create an array, first you must declare an array variable of required type, the syntax is given below:

type variable-name[];

Example:

int account_numbers[];

To allocate memory or create array object the syntax is given below:

variable-name = new type[size of the array];

Example:

account_numbers = new int[10];

You must specify the size of the array during creating object.

After this statement, account_numbers will refer to 10 integers, and assigned to 0. You can access any element by index, array index starts with 0 and ends with (array length-1). We can assign array values as given below:

account_numbers[0] = 1016;
account_numbers[1] = 449;
account_numbers[2] = 1015;

The below line displays the value stored at index 1.

System.out.println(account_numbers[1]);

We can combine declaration of an array with allocation of array as given below:

int account_numbers[] = new int[10];

Arrays can be initialized when they are declaring as given below:

int account_numbers[] = {12,34,56,12,78,98,34};

Other Java Array Examples

Knowledge Centre
Interface and its usage
Interface is similar to a class which may contain method's signature only but not bodies and it is a formal set of method and constant declarations that must be defined by the class that implements it. Interfaces are useful for declaring methods that one or more classes are expected to implement, capturing similarities between unrelated classes without forcing a class relationship and determining an object's programming interface without revealing the actual body of the class.

About Author

Most Visited Pages

Other Interesting Sites

Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
Privacy Policy | Copyright © 2015 by Nataraja Gootooru. All Rights Reserved.