Packages 
Package Description
java.io
Provides classes for input and output through data streams.
java.lang
Provides classes that are fundamental to the Java programming language.
java.lang.ref
Provides support for weak references.
java.security  
java.util
Contains the collection classes, and the date and time facilities.
javax.microedition.io
Classes for the Generic Connection framework.
javax.microedition.io.file  
javax.microedition.location  
javax.microedition.pki
Certificates are used to authenticate information for secure Connections.
javax.wireless.messaging
This package defines an API which allows applications to send and receive wireless messages.
javax.xml  
javax.xml.parsers
The javax.xml.parsers package contains the Java API for XML Processing (JAXP) subset defined by JSR 280.
javax.xml.stream
This package provides the Streaming API for XML (StAX, or JSR 173) subset defined by JSR 280.
org.bouncycastle.crypto  
org.bouncycastle.crypto.digests  
org.bouncycastle.crypto.encodings  
org.bouncycastle.crypto.engines  
org.bouncycastle.crypto.generators  
org.bouncycastle.crypto.io  
org.bouncycastle.crypto.macs  
org.bouncycastle.crypto.modes  
org.bouncycastle.crypto.paddings  
org.bouncycastle.crypto.params  
org.bouncycastle.crypto.prng  
org.bouncycastle.crypto.signers  
org.bouncycastle.crypto.tls  
org.bouncycastle.crypto.util  
org.bouncycastle.util  
org.bouncycastle.util.encoders  
org.eclipse.paho.client.mqttv3
Contains a programming interface enabling applications to communicate with an MQTT server
org.eclipse.paho.client.mqttv3.persist
Contains implementations of the MqttClientPersistence interface.
org.joshvm.application  
org.joshvm.crypto.keystore  
org.joshvm.event  
org.joshvm.j2me.cellular  
org.joshvm.j2me.dio  
org.joshvm.j2me.dio.gpio  
org.joshvm.j2me.dio.i2cbus
Interfaces and classes for I2C (Inter-Integrated Circuit Bus) device access.
org.joshvm.j2me.dio.spibus  
org.joshvm.j2me.directUI  
org.joshvm.media  
org.joshvm.remote  
org.joshvm.ui  
org.joshvm.ui.layout  
org.joshvm.ui.listener  
org.joshvm.ui.widget  
org.joshvm.util  
org.json.me  
org.json.me.util  
org.w3c.dom
The org.w3c.dom package provides the Java ME DOM API defined by JSR 280.
org.w3c.dom.events
The org.w3c.dom.events package provides the Java ME DOM Events API subset defined by JSR 280.
org.w3c.dom.views
The org.w3c.dom.views package provides the Java ME DOM Views API defined by JSR 280.
org.xml.sax