Are you used to writing code?

At first, you just have to write the process. To write beautifully, read various codes, accumulate learning, Because it's the first time you can do it.

When I wrote it, it got messed up and I wanted to put it back

It's common to start writing somehow when you haven't organized your mind. The code I was writing to organize it has been messed up, I want to put it back ... Common things.

At the development site, the source code is version controlled, The history of corrections is always recorded. Anyone who writes code at work must be familiar with version control software.

version control?

I wonder what it means for people who are not engineers. Simply put, it is a mechanism to save the results recorded in units called commits. You can return to your liking in units of commits, or compare in units of commits You can also grasp the contents of the correction.

In short, it's essential knowledge.

By the way, the following sites carefully explain where to start studying. https://www.backlog.jp/git-guide/

Homework Let's manage the source code on Github

For the time being, let's push master and bring it to a state where it can be managed. Github is a Git service that you can use for free if you publish the source code. It is also used in the field of development.

It's OK if you can manage it like this

Let's be able to commit and push from the homework IDE

Make it possible to access the branch on Github created from Eclipse or IDE.

About Git clients

SourceTree https://ja.atlassian.com/software/sourcetree Graphical and easy to handle even for beginners, but heavy on Windows It works lightly on a Mac.

Git https://git-scm.com/ You will operate from the command line, but if you are serious about learning Learning on the command line is essential.

Quick learning Java "Introduction?" Part 3 Talking away from programming