Since MIDP 2.0, a midlet can be unsigned or signed (in MIDP 1.0 all midlets were unsigned). A midlet which is signed can get easier access to sensible operations. For example, let’s suppose that a midlet wants to access the network (http). If it’s unsigned, the user is asked for confirmation each time the midlet [...]
I’ll describe here in short how signing works: A key is a pair of a private key and a public key. These two key have the property that what is encrypted with one can be decrypted with the other. So if you encrypt something using the private key, it can be decrypted using the public [...]
These are some popular phones that people are still using for running JavaME applications: Nokia 6600 176×208, MIDP 2.0 Nokia 6230 128×128, MIDP 2.0 Nokia 3510i 96×65, MIDP 1.0 Nokia 3200 128×128, MIDP 1.0 Nokia 3100 128×128, MIDP 1.0 SE K700i 176×220, MIDP 2.0
MIDP 2.1 was released on 20 June 2006. It only brings minor differences with respect to MIDP 2.0. MIDP 3.0 is expected to be released toward the end of 2006. The Reference Implementation (of MIDP 3.0) will be released as Open Source under the Motorola Extensible License. Sun recently announced that it plans to open [...]