Constructing a File Class

Java defines a File class that represents a name of a file on your operating system’s file system. You can use the File class to manipulate the file name, which is a text string (see Tip: “Manipulating File Names With the File Class”). You can also use it to perform file-related operations on the underlying file system (see Tip: “Performing File Operations With the File Class”). A File object is constructed using a String name that defines the file. The simplest constructor for the File class is:

 public File (String filename)

The parameter “filename” can be just the name of the file, a relative pathname, or the absolute pathname. For example, if you had a file “myfile.xyz” in the directory “C:fooar” on your system, an object of the type File could be constructed in any of the following ways:

 File file = new File("myfile.xyz");File file = new File("barmyfile.xyz");File file = new File("fooarmyfile.xyz");File file = new File("C:fooarmyfile.xyz");

If “filename” is not absolute; it is taken relative to the current working directory of the program. For example, the File object in the second constructor would only be useful if the program was running in the directory “C:foo.”

Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS

homes in the real estate industry

Exploring the Latest Tech Trends Impacting the Real Estate Industry

The real estate industry is changing thanks to the newest technological advancements. These new developments — from blockchain and AI to virtual reality and 3D printing — are poised to change how we buy and sell homes. Real estate brokers, buyers, sellers, wholesale real estate professionals, fix and flippers, and beyond may