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Advanced Java Programming

Reading console input with a scanner

From the course: Advanced Java Programming

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  • Course details

    Want to get more out of the Java language and platform? In this platform- and framework-neutral course, instructor Bethan Palmer digs into some of the language’s more advanced features, helping you expand your programming skills as she equips you with techniques you can use when building applications anywhere Java is used: in web, mobile, and desktop applications. Bethan covers a variety of topics, including generics, working with the Collections Framework, and functional programming. Plus, learn about I/O in Java, working with files and directories, and structuring applications using the modular system available in Java.


    • Click here to view Bethan Palmer’s instructor page

      Bethan Palmer

      Software Developer and Java Champion

      • Bethan Palmer is a developer who loves technology and has a master's degree in computer science.

        For her day job, Bethan is a Java programmer and the product manager for a Java PDF library at IDRsolutions. She gets to spend a lot of time writing and refactoring code, as well as deciding on product strategy and road maps.

        She also spends much of her time attending conferences and is a regular speaker at Oracle Code One and NetBeans Days. She manages and writes articles about Java, technology, the books she's reading, and conferences she's attending on the Java PDF blog.

    Skills covered in this course

  • Learn advanced Java programming

    - [Instructor] Sometimes, there is a need to read simple inputs from the console with Java. For example, a test program that is console-driven or some kind of program that requires the user to input numbers will require data to be read in. The quick and simple way to do this is using the scanner class. The scanner class is useful for reading small amounts of input and is relatively easy to use. Scanners work with primitive types, i.e. all of the built-in data types in Java. They can be used to pass ints, longs, floats, and so on. In this example, I have a class called person which has three fields called name, age, and phoneNumber. I want a user to be able to create a person by inputting their information to the console. To do this, I have a class called PersonCreator with a main method. The first thing I will need to do is create a scanner object which I will put in a main method, and I will call scanner. I will then put = new.Scanner, and I need to pass in is an…

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