Android API doesn't support base64 coder even ...

I recently study in android development. compare to other environment, developping on android sometime is a quite hard job since there are lots of bugs and API is broken and uncompleted.

I have some demand on base64 encoding/decoding, and i just checked for docuemntation if there is API providing this kind of feature. I found following paragraph:

android.util: Provides common utility methods such as date/time manipulation, base64 encoders and decoders, string and number conversion methods, and XML utilities.

but there is not any method supporting this feature in API, what a joke this is. Orz