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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.
Lecturer at Penn State UniversityPeggy 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.
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- If you're the type of programmer that prefers to use the command line to run your programs, we can still do debugging. There is a command line debugger available within the jdk. The debugger is called jdb, for Java Debugger. The first thing we need to do when we're in our command window is to make sure that we still have our path set. So I'm gonna use my batch file and I'm gonna type SetPath.bat. Now, it's a good idea to recompile your program using the -g option. This generates all the debugging information. So let's do that. I'm gonna do javac. Copy the exercise file for this video to your myJava folder to follow along. I have a program in my myJava folder called DebugDemo.java. I'm gonna use the -g option. Okay, now I'm ready to use the Java Debugger that's included in our jdk environment. So, to debug the program, we type in jdb. Then we type in the name of our class, DebugDemo. And our particular program requires that we pass in a message. So I'm gonna say "Welcome to…
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