Git for Java Newbies: Quick Start Guide

php "Git for Java Newbies: Quick Start Guide" recommended by editor Yuzai is designed to help Java beginners quickly master the basic concepts and basic operations of Git, so that they can more easily Manage and collaborate on project code efficiently. This guide introduces the common commands and operation procedures of Git in a concise and clear way. It is suitable for Java developers who need to quickly get started with the Git version control tool.

Install Git

1. Go to Git official website https://git-scm.com/ to download and install Git.
2. Verify installation: Open a command line and enter git --vers<strong class="keylink">io</strong>n.

Initialize local warehouse

1. Create a new directory to store your project.
2. Navigate to the directory and enter git init. This will create a new Git repository in the current directory.

Add files to the staging area

1. Create a new file, such as README.md.
2. Enter git add README.md Add the file to the staging area. The staging area is used to temporarily store changes to be committed to Git.

Commit changes

1. Once you are satisfied with your file, enter git commit -m "commit message" to commit the changes to the local repository. The commit message is a short description explaining your changes.

Remote warehouse

A remote repository is a central location where project code is stored, such as GitHub or GitLab.

Create remote warehouse

1. Go to GitHub or GitLab and create a new repository.
2. Copy the URL of the warehouse.

Associate the local warehouse with the remote warehouse

1. Navigate to the local warehouse directory and enter git remote add origin <remote warehouse url></remote>.
2. Verify connection: Enter git remote -v to view the configured remote repository.

Push changes to the remote warehouse

1. Enter git push origin m<strong class="keylink">ai</strong>n to push local changes to the main branch of the remote warehouse.
2. The remote repository now contains your committed changes.

Pull changes from remote repository

1. If others have committed changes and pushed them to the remote repository, you can pull those changes by typing git pull origin main.
2. This will merge the changes in the remote repository into your local repository.

Branch and merge

Branching allows you to create an independent copy of your code base so you can experiment or make changes without affecting the main branch.

Create a branch

1. Enter git checkout -b <branch name></branch> Create a new branch.
2. Work on a new branch and commit changes.

Merge branches

1. Once you are satisfied with the branch, enter git checkout main to switch back to the main branch.
2. Enter git merge <branch name></branch> Merge changes on the branch into the master branch.

Conflict resolution

If a conflict occurs when merging branches, Git will mark the conflicting files. You need to manually resolve the conflict and resubmit the changes.

Rollback changes

If a bug is submitted, you can roll back the changes using:

• Undo uncommitted changes: git reset HEAD <file path></file>
• Undo committed changes: git reset --hard HEAD~1
• Delete remote commits: git push origin --delete <branch name></branch>

Advanced Features

Here are some more advanced features that can further improve your Git workflow:

• Tags: Create a snapshot with a specific name for easy future reference.
• Pull Requests: Ask others to review your changes before merging them into the master branch.
• Continuous Integration: Automate the build, test and deployment process.

in conclusion

This guide provides the basic steps needed to get started with Git. With practice and continued use, you'll become a Git master who can effectively collaborate on Java projects.

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