Packages
Package	Description
java.io	Input/Output support
java.lang	Core Java classes
java.lang.annotation	Basic support for annotations
java.math
java.net	Network communication through TCP and UDP sockets or URLs.
java.text	Provides classes and interfaces for handling text, dates, numbers, and messages in a manner independent of natural languages.
java.util	Utilities
tijos.framework	Access to TiJOS framework
tijos.framework.appcenter	Application center class
tijos.framework.devicecenter	Device bus related classes, such as GPIO I2C, PWM, etc., can be used to develop the sensor which is not supported in the standard library
tijos.framework.eventcenter	Event center class, which deals with events from hardware peripherals, such as GPIO events
tijos.framework.networkcenter.dns	DNS client
tijos.framework.networkcenter.mqtt	MQTT3.1.1 client
tijos.framework.networkcenter.ntp	Network time protocol client class
tijos.framework.platform	System Settings related classes, like host name and other settings
tijos.framework.platform.lan	Local Area Network,LAN class
tijos.framework.platform.lpwan	Low Power Wide Area Network classes, such as: NB-IoT, LoRaWAN, etc
tijos.framework.platform.peripheral	Classes to access the peripherals on the development board, like keyboard, button, light, etc
tijos.framework.platform.wlan	WIFI class
tijos.framework.sensor.button	Button classes
tijos.framework.sensor.dht	DHT11(22) classes
tijos.framework.sensor.ds18b20	DS18B20 classes
tijos.framework.sensor.general	General Sensor classes
tijos.framework.sensor.hcsr	HCSR04(04+) classes
tijos.framework.sensor.mq	MQn classes
tijos.framework.sensor.vs1838b	VS1838B classes
tijos.framework.transducer.buzzer	Buzzer classse
tijos.framework.transducer.led	LED classes
tijos.framework.transducer.oled	OLED classes
tijos.framework.transducer.relay	Relay classes
tijos.framework.util	Utility
tijos.framework.util.base64	Utility classes for base64
tijos.framework.util.crc	Utility classes for CRC
tijos.framework.util.json	JSON-java suppport
tijos.framework.util.logging	Utility classes for logging
tijos.framework.util.text	Dot matrix font class

TiJOS JDK Overview

The TiJOS JDK includes two parts: the standard Java JDK and the TiJOS Framework, the standard Java JDK part is compatible with the Oracle standard Java JDK, and the standard Java code can be used directly on the TiJOS platform; The TiJOS Framework is mainly used to operate hardware peripherals and sensors, while also supporting the configuration of the platform itself, such as the network.

Standard Java core class support

The TiJOS JDK contains most of the commonly used Java base core classes, including java.lang, java.io, java.net, java.util, etc. The classes in these packages are the base of the entire JAVA JDK to meet the various application development requirements.

Given that TiJOS runs under the very limited resources of the MCU, the following Java features are not supported in the TiJOS JDK:

Reflection: Unsupported
Serialization : Unsupported
Regular Expression : Unsupported, You can use string - related operation functions to achieve the corresponding functions
Locale : Unsupported
finalize: Do not execute code in an object's finalize method, which is not invoked

The TiJOS JDK supports core packages provided in the standard Java JDK, including

Standard Java Package	Description
java.lang	the basic classes of the Java language
java.io	IO Stream support, which contains all of the output stream classes
java.net	Network classes
java.util	Contains collections and various utility classes

java.lang Package Support

TiJOS JDK contains most of the classes of the standard java.lang package, but the reflection reletated methons are not supported, like ClassLoader, etc.

The following list only lists the standard Java classes and interfaces supported by the TiJOS JDK, and you can refer to the standard Java documentation for specific use.

Supported Class List

Boolean
Byte
Character
Class
Double
Enum
Float
Integer
Long
Math
Number
Object
Runtime
Short
String
StringBuffer
StringBuilder
System
Thread
Throwable
Void

java.io Package Support

TiJOS JDK contains most of the classes of the standard java.io package, but serialization is not supported.

The following list only lists the standard Java classes and interfaces supported by the TiJOS JDK, and you can refer to the standard Java documentation for specific use.

Supported Class List

BufferedInputStream
BufferedOutputStream
BufferedReader
BufferedWriter
ByteArrayInputStream
ByteArrayOutputStream
CharArrayReader
CharArrayWriter
DataInputStream
DataOutputStream
File
FileInputStream
FileOutputStream
FileReader
FileWriter
FilterInputStream
FilterOutputStream
FilterReader
FilterWriter
InputStream
InputStreamReader
LineNumberInputStream
LineNumberReader
OutputStream
OutputStreamWriter
PipedInputStream
PipedOutputStream
PipedReader
PipedWriter
PrintStream
PrintWriter
PushbackInputStream
PushbackReader
Reader
SequenceInputStream
StreamTokenizer
StringBufferInputStream
StringReader
StringWriter
Writer

java.net Package Support

TiJOS JDK contains standard java.net core package, including TCP, UDP, DNS network protocols related classes, like Socket and ServerSocket, DatagramSocket, URI, and so on. Proxy, HTTP, URL related classes are not include so far.

The following list only lists the standard Java classes and interfaces supported by the TiJOS JDK, and you can refer to the standard Java documentation for specific use.

Supported Class List

DatagramPacket
DatagramSocket
Inet4Address
InetAddress
InetSocketAddress
RemoteSocket
ServerSocket
Socket
SocketAddress
URI

java.util Package Support

The TiJOS JDK supports most of the classes in java.util, including collections, clocks, and so on, which do not support functions such as Locale, TimeZone, etc.

The following list only lists the standard Java classes and interfaces supported by the TiJOS JDK, and you can refer to the standard Java documentation for specific use.

Supported Class List

AbstractCollection
AbstractList
AbstractMap
AbstractMap.SimpleEntry
AbstractMap.SimpleImmutableEntry
AbstractQueue
AbstractSequentialList
AbstractSet
ArrayDeque
ArrayList
Arrays
BitSet
Calendar
Collections
Date
Dictionary
GregorianCalendar
HashMap
HashSet
Hashtable
IdentityHashMap
LinkedHashMap
LinkedHashSet
LinkedList
Observable
PriorityQueue
Properties
Random
Stack
StringTokenizer
Timer
TimerTask
TreeMap
TreeSet
UUID
Vector

Summary

The above is the package and related classes supported in the current TiJOS JDK, which are the same usage as standard Java and are the most commonly used core classes in Java programming, we will gradually add more and more classes on requirements.

TiJOS Framework

The other large part of the framework class in the TiJOS JDK is to operate on hardware resources and sensor in the application, including the operation of various hardware interfaces and sensor, while also providing some of the tools that might be used, such as BASE64, JSON, and so on

Components

Pakcage Name	Description
tijos.framework.platform	System Settings related classes, like host name and other settings
tijos.framework.eventcenter	Event center class, which deals with events from hardware peripherals such as GPIO events
tijos.framework.networkcenter	Network center class, management network related configuration and status, such as: WLAN, DNS, etc
tijos.framework.devicecenter	Device bus related classes, such as GPIO I2C, PWM, etc., can be used to develop the sensor which is not supported in the standard library
tijos.framework.networkcenter.ntp	Network time protocol client class
tijos.framework.networkcenter.mqtt	MQTT3.1.1 client
tijos.framework.appcenter	Application management center
tijos.framework.util	Utility classes, like Delay, BitConverter, etc
tijos.framework.util.base64	BASE64
tijos.framework.util.json	JSON
tijos.framework.util.crc	CRC8, CRC16
tijos.framework.util.logging	Logger class, output to the print port

More Resources

Name	Url
TiJOS Web Site	http://www.tijos.net
TiJOS Community	http://bbs.tijos.net
TiJOS Document Resource Center	http://www.tijos.net/docs
TiJOS Driver Store	http://store.tijos.net