To see this page, select Tools > Java Platforms, and click the Add Platform button. Select platform type is the first page of this wizard. The platform types are as follows:
Java Standard Edition. The standard Java SDK. There is no need to add SDKs, the Java ME Platform SDK uses only the JDK you specified at installation time.
Java ME MIDP Platform Emulator. One or more CLDC emulators that are compliant with the Universal Emulator Interface Specification (UEI) and use technology based on the phoneME™ Feature project (see https://uei.dev.java.net and https://phoneme.dev.java.net).
Custom Java ME Platform Emulator. A platform emulator that is not compliant with the UEI standard.
Java ME CDC Platform Emulator. One or more CDC emulators that are compliant with the UEI and use technology based on phoneME Advanced (see https://phoneme.dev.java.net). The CDC platform includes the CDC and BD-J stacks.
See Selecting a Platform.