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Java 8 Essential Training

Storing data in instance variables

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.


    • 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

    - When you create a custom class, you can design it to encapsulate data using InstanceVariables or fields. I have a main class, and I'm going to create a new class in a new package that I'll name model. I'll right-click on my base class, and choose new package. And I'll name the new sub package, model. I'm naming it this because this is a common bit of Java vocabulary. A model class defines your data model. Now I'll right-click on that new package and create a new Java class and I'll name it Olive. My goal is to create my encapsulated Olive press system. Each instance of my Olive class will represent a single piece of fruit, a single olive. And so I'll need to represent its name, its color and the amount of oil it would yield when crushed in an olive press. I'll define these values as fields of the class. I'll start with a public string and I'll give it a variable name of simply, name. Then I'll create another public string and I'll give this one a type of long and…

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