Google Nexus 7 users can change the display language of the device using the options available as part of the settings.
Step 1: Launch the Settings screen on Google Nexus 7.
Step 2: In the Settings screen, tap the Language and Input option under the Personal section.
Step 3: Tap the Language option in Language & input screen.
This would display the following dropdown with supported languages for the device.
Now pick the preferred language from the list to set the display language on your Nexus 7.