How to obtain SHA1 and SHA256 fingerprints?

For example if your JDK path is

c:\Program Files\Java\sdk-xx.x.x\bin\

then in command prompt write

cd c:\Program Files\Java\sdk-xx.x.x\bin\

Then use this command tool in your command prompt:

keytool -keystore (full path of your keystore file) -list -v

Example (Debug Fingerprints):

keytool -keystore C:\Users\Profilename\.android\debug.keystore -list -v

For Release Fingerprints:

keytool -keystore C:\Users\Profilename\keystore_folder\myproject.jks -list -v

Enter your keystore password (if it's default debug.keystore then password probably android)
From result, look for SHA1 and SHA256 fingerprints.