JavaCard OS

I am a bit confused about SELECT and DESELECT method. AWAK, we can select the applet in the applet itself.
Actually, the JCRE is the one who perform applet selection. Thus I think that the implementation of SELECT should be in the JCRE.

Am I right? I really want to know why SELECT method should be in the applet.

Just in my opinion, SELECT and DESELECT method is a kind of callback after JCRE performs selection.

Anyway, read the JCRE specification for more details.