Practice displaying the stack trace

if lessons only teach you use foreach, use for(i) iterator to check value what is needed.

For anyone one's confused about these tasks, there are some info might be useful: "return Thread.currentThread().getStackTrace()[2].getMethodName();}" This code is a method that returns the name of the method that called the current method, using the stack trace of the currently executing thread in Java. Let's break it down: Thread.currentThread() returns a reference to the currently executing thread. getStackTrace() returns an array of StackTraceElement objects representing the method call stack for that thread. [2] is used to access the third element of the stack trace array (the element at index 0 is the method that called getStackTrace(), the element at index 1 is the getStackTrace() method itself, and the element at index 2 is the method that called the method that called getStackTrace()). getMethodName() is called on the StackTraceElement object at index 2 to retrieve the name of the method that called the current method. So in summary, return Thread.currentThread().getStackTrace()[2].getMethodName(); returns the name of the method that called the current method, using the stack trace of the currently executing thread.

The worst lesson of all, I understand that as a programmer you have to wake up but could you explain something? It is supposed that the course is to learn and if they put you some exercises that you do not even know where to start looking for when it would be much more useful to explain it well and instead of wasting time searching without success, practice more, I say...

I'm using Google. And I downloaded Java API document at Level 09. I don't ask CodeGym to explain everything. But at least give us some basics or keywords. This lesson is confusing.

This one got me initially since I was not counting the getStackTrack() in the method call chain. Good reminder !!

Don't use COPY - PASTE. Type it all manually - this is the best way to develop muscle memory.

Other than debugging, what would be the actual use of the getLineNumber method?

Felt like I was thrown in the deep end. Not enough explanation on the subject.

Well, I learned something about StackTrace, but this was a very strange set of tasks.

A detailed tutorial or, at a minimum, a table listing all the methods and their use would be preferred and could then be used to apply the knowledge to the exercises for practicing the usage and application. I did my best to complete each on my own and when unsuccessful, I would compare to the solution, copy and paste it in, and then analyze the resulting completed program.