== Develop Another Feature and Use Staging View
In this exercise you learn how work on multiple features in parallel. You will
also get used to the Git Staging view.

=== Create another local Feature Branch and check it out
When you develop features/bug-fixes in parallel make sure you develop them in
different branches. Make sure to set the starting point of these branches
correctly.  Right-click on your Project and select 'Team > Switch to > New
branch'. Select as 'Source ref' the remote tracking branch
'refs/remotes/origin/master' and type into 'Branch name' the name of the new
branch 'addPowerOperation'. Check 'Checkout new branch' and press 'Finish'.
This will create and checkout a new branch which starts where the remote
tracking branch 'refs/remotes/origin/master' points to.

image:create-branch-2.png[Create branch]

=== Develop the new feature
Develop a 'Power' class similar to the 'Plus' class in the package
'org.eclipse.example.calc.internal.operations' in project
'org.eclipse.example.calc'. Don't forget to register the new class in the
'Calculator.setupDefaultOperations()'.

image:power-class.png[Power Class]

image:register-power.png[Register Power]

=== Do a modification you don't want to commit
Sometimes you want to locally change a file but don't want this modification to
be included in the next commit. E.g. certain project modifications are
important to you but others shouldn't see them. To simulate this right-click on
your project and select 'Properties > FindBugs' and select the button 'Run
automatically' (only available if FindBugs is installed in your Eclipse).

=== Open the Git Staging view and inspect the status
Open the staging view by selecting 'Window > Show View > Other… > Git Staging'.
This view presents which files you have touched and which files will be in the
next commit. 'Unstaged Changes' lists those changes which you have done locally
but which you have not yet added to the index. 'Staged Changes' list those
changes which you already have added to the index. You can drag and drop files
from one area to the other.

Git Staging view should list three files '.project', 'Calculator.java' and
'Power.java' ('.project' appears only if you have configured FindBugs
to run automatically).

image:staging-view.png[Staging view]

Double-click on '.project' to inspect which changes you have done
('.project' appears only if you have configured FindBugs to run
automatically).

image:staging-view-2.png[Staging view]

Drag and drop 'Calculator.java' and 'Power.java' to the 'Staged Changes' area
to mark that they should be included in the next commit.

image:staging-view-3.png[Staging view]

=== Commit your change
In Git Staging View enter a commit message in the 'Commit message' field and
click on the 'Commit' button.

image:staging-view-4.png[Staging view]

=== Cleanup
After inspecting your change to '.project' you decide that you don't want this
change anymore. Revert your change by right-clicking on the '.project' file in
'Git Staging View' and select 'Replace with File in Git Index'.

link:index.html[Git Exercises]