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Java Essential Training for Students

Creating and importing JAR files

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

      Content Strategist, Software Development Languages at Linkedin Learning Solutions with Lynda.com content

      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

  • Welcome

    - Now I'd like to talk about the term "J - A - R." J - A - R is referred to as a "JAR" file, and the "JAR" in JAR file stands for "Java Archive." It's commonly used to combine several classes into one compressed file. JAR files are created either using the utility jar.exe that's provided in the Java JDK, or you can create your JAR file in your IDE, your integrated development environment. In this section I will describe creating JAR files from both the command line, and in the IDE. Let's start with a command line version. Before making our JAR file, we need to get all our classes and manifest file together in one directory. Let's use windows explorer to create a new folder called "Geometry," inside our "my java" folder. Now we can copy all the files from the 04_02 exercise folder into the geometry folder. We're all set now, we can work with the files in the console window to make our JAR file. To make the JAR file runnable, you need to create a manifest file that specifies which class…

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