Java Program Bugs and Software Debugging Overview - Java Tutorial - Appficial
A bug is an error in your computer program that causes it to produce incorrect or unexpected results
The term bug was coined in 1947 by Grace Hopper, an engineer who discovered her program on a Harvard University Mark II computer was not working because a moth was stuck in one of the relays (a type of mechanical switch)
Debugging (troubleshooting) is the process of finding and fixing problems (bugs) in a computer program
There are several approaches to consider when debugging
Understand and fix compiler errors and warnings
Write comments in the code to remind yourself to fix it later
Manually set variables to specific values for verifying your program results
Temporarily comment out suspected code to disable it
Insert print statements throughout your program to watch values of variables
Visually inspect the code, or have a friend/coworker review it
Use the IDE’s debugger tool
Use a testing framework such as JUnit
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