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Java Essential Training for Students

Creating classes

From the course: Java Essential Training for Students

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  • Course details

    Taking a college-level programming course? Maximize your learning with these Java tutorials. Peggy Fisher explores command-level programming, basic techniques such as managing loops and creating methods, debugging Java code, working with classes and objects, and storing and sorting arrays. Along the way, she investigates the Java API and Java's capabilities for running simulations and algorithm analysis, and issues challenges to write programs that utilize all of these Java features.

    Instructor

    • Click here to view Peggy Fisher’s instructor page

      Peggy Fisher

      Lecturer at Penn State University

      Peggy Fisher is a programmer and content manager at LinkedIn Learning.

      Peggy's main focus is application programming in Java, Arduino, and C++. She has also worked on courses in COBOL and discrete ,athematics. Previously she was a faculty member at Penn State University's College of Information Sciences and Technology. She started out as a programmer working for a large insurance company, but after 18 years she left her job as a director of information technology to pursue her true passion teaching. She earned a master's degree in math education, and went on to teach high school math and computer science in Pennsylvania. In 2012, Peggy accepted a position as an instructional designer at Penn State, and shortly thereafter began teaching Intro to Application Programming with Java. She is a strong supporter of women in STEM. As one of the few female programming teachers, she serves as a mentor to incoming female freshmen who are considering a career in programming. She was also the K–12 outreach coordinator for the college, where she scheduled, ran, and taught summer camps for middle school and high school students. In a PBS NewsHour interview, she expressed that all students should take at least one programming class either in high school or college. Peggy enjoys constantly learning and finding new and exciting ways to bring technology to life in and outside of the classroom, such as using Arduino microcontrollers or Lego Mindstorms, to help make learning hands-on and fun.

    Skills covered in this course

    For each course you will get

    • Exercise files and quizzes
    • Certificate of completion from LinkedIn
    • Offline and audio-only options
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  • Welcome

    - Now that we know exactly what data and methods we need, let's review a payroll application that uses an employee class and an address class. In the same project folder as the main program, there are two seperate files for the employee class and the address class. Let's start by reviewing the employee class. Remember, all this data was listed in the UML diagram. In the employee class, we start by defining all the instance data. Think of these fields as the attributes of an employee. These are the fields that we refer to as the state of the employee. Starting on line nine, we have private String firstName, then we have lastName, phoneNumber, address, employeeID, deptID, title, and salary. Notice that these variables are all defined as private. This is how we enforce data integrity. Usually, right after the instance data you have your constructor. Let me scroll down a little bit. The constructor is easy to identify because it has no return type, and it has the exact same name as the…

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