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Java 8 Essential Training

Managing files with the original File class

From the course: Java 8 Essential Training

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  • Course details

    If you want to build applications for mobile devices, desktop computers, or the web, you need to know Java. This course provides the foundation for learning Java SE (Standard Edition), so you can build your first apps or start exploring the language on your own. Author David Gassner shows how to install Java and the IntelliJ IDEA IDE, and start working with variables, data types, keywords, and other critical language components. He also helps you control program flow with conditional logic and loops, store data with the Java Collections Framework, and understand how Java implements object-oriented coding principles such as inheritance and polymorphism.

    Instructor

    • Click here to view David Gassner’s instructor page

      David Gassner

      Managing Staff Instructor, LinkedIn Learning Technology Library at LinkedIn

      David Gassner is the author of over 60 video-based technical training courses for software developers.

      David is a senior staff instructor who specializes in development platforms and programming languages including Android and Java. He currently creates training content for Android developers and content that covers multiple programming languages including Java, C#, Visual Basic, and Go. He was formerly the president and founder of Bardo Technical Services, an Adobe Solutions Network Training Provider. As an Adobe Certified Expert, he wrote courseware for Adobe and delivered extensive training on Flex, ColdFusion, Dreamweaver and Flash. He was the author of Wiley's Flex 3 Bible and Flash Builder 4 and Flex 4 Bible. He most recently designed and developed Audio Cues—an Android app for running sound in live performances—which is available in the Google Play store.

    Skills covered in this course

  • Welcome

    - In this section of the course, I'm going to describe some practical tasks that most developers need to know how to do, including reading and writing files and communicating over the Internet. I'll start with file I/O. The Java class library in Java 8 implements two completely separate file I/O systems: the original system that was delivered with the original version of Java back in 1995, and has evolved somewhat since then; and a completely new version that was delivered with Java 7. In this demonstration, I'll talk about techniques that are available in all versions of Java, including Android's implementation because the newer libraries aren't available in all versions of Java, including Android's. I'm working in a project named CopyFile, and this project, in addition to the source files, has a files folder and there's a file there called loremipsum.txt. I'm going to demonstrate the Java code you'd need to make a copy of this file. Now you can use any file you want, including a…

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Contents