How to solve adb is not recognized as internal or external command

I got this error when I try to emulate my cordova project using android emulator in command prompt.

when I execute below command 

> cordova emulate android

It gives

Error executing "adb devices": 'adb' is not recognized as an internal or external command, operable program or batch file.

This error occurs because you don't have the platform-tools folder located in your path .Your path should include both platform-tools and tools folder in path.

Place where your adt-bundle locate \adt-bundle-windows-x86_64-20131030\sdk\platform-tools;

Place where your adt-bundle locate \adt-bundle-windows-x86_64-20131030\sdk\tools




If you go to your android-sdk/tools folder you will find that the adb tool is no longer there .It has moved to the platform-tools/

But in a case If you don't see this directory in your SDK,

• launch the SDK and AVD Manager
• Install "Android SDK Platform-tools"

 Now you have to update your PATH environmental variable to include platform-tools/ directory

         

• Right click on your This-PC (My computer) ->
• Properties->
• Advance System Settings->
• Advanced->
• Environmental variables->
• System variables->
• Select path variable->
• Edit

Now you are free to execute adb from any location. Restart your command prompt and enjoy..   :)

 

How to fix Eclipse validation error “No grammar constraints detected for the document”?

You will be able to remove above  warning by following below process Go to

 - window 

 - Preferences

 - XML

 - XML Files

 - Validation

 then you have to set

validating files->No grammar specified to "ignore"

This may ignore “No grammar constraints detected" warning.