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Java Essential Training for Students

Setting breakpoints

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

    - Let's start with debugging inside the NetBeans IDE. I have a grocery project file open. It's helpful to enable the line numbering feature. If you don't see line numbers, go to View, and click on Show Line Numbers. That toggles the line numbers back on. Now we can add a Breakpoint. Breakpoints enable the programmer to stop and take control of the program execution. This can be done in three ways. First, we can right click the number column on the far left in the editing window. So I'm gonna click on line 14. We can go to Breakpoint, and choose Enabled. We repeat the same procedure to remove the Breakpoint. Right click, Breakpoint, and click on Enabled to deselect it. The second way to add a Breakpoint, make sure you have the line selected where we want to stop. Go to the top, go to Debug, and choose Toggle Line Breakpoint. Now a Breakpoint is set. You see the red square on the left hand side, and the entire line is highlighted in red. The third option, and probably the easiest, is to…

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