Changes made on branch using git impacts the original branch?

[Lisa Austin]

I'm wondering what I'm doing wrong here.  I've made a copy of my develop branch called task_2219  by using git checkout -b task_2219.   I made changes to the new branch but then decided I wanted to go back to the develop branch.  I did the git checkout develop and I see all the files I made changes to while on task_2219 is listed starting with an "M"

For example:
M src/main/java/com/task/RunFeatureTests.java

The changes show up to these files on the develop branch.  

Should I have stashed my changes on task_2219 before switching branches?

[Tim Cooke]

You did not commit any changes to the task_2219 branch so you're still working with local changes that do not belong to any git branch. If you're not ready to commit them, then you can stash them, otherwise commit them before switching back to the develop branch.

[Lisa Austin]

Tim Cooke wrote:You did not commit any changes to the task_2219 branch so you're still working with local changes that do not belong to any git branch. If you're not ready to commit them, then you can stash them, otherwise commit them before switching back to the develop branch.

Ah That makes sense.  Thank You.