Preparing for Development Environment

Table 1 describes the environment required for application development.

**Table 1** Development environment
Preparation Item	Description
OS	Development environment: Windows OS. Windows 7 or later is supported. Operating environment: Windows OS or Linux OS. If the program needs to be commissioned locally, the running environment must be able to communicate with the cluster service plane network.
IntelliJ IDEA installation and configuration	It is the basic configuration for the development environment. The version must be 2019.1 or other compatible version. NOTE: If the IBM JDK is used, ensure that the JDK configured in IntelliJ IDEA is the IBM JDK. If the Oracle JDK is used, ensure that the JDK configured in IntelliJ IDEA is the Oracle JDK. If the Open JDK is used, ensure that the JDK configured in IntelliJ IDEA is the Open JDK. Do not use the same workspace and the sample project in the same path for different IntelliJ IDEA programs.
Maven installation	Basic configuration of the development environment for project management throughout the lifecycle of software development.
JDK installation	Basic configuration of the development and running environment. The version requirements are as follows: The server and client support only the built-in OpenJDK. Other JDKs cannot be used. If the JAR packages of the SDK classes that need to be referenced by the customer applications run in the application process, the JDK requirements are as follows: For x86 nodes that run clients, use the following JDKs: Oracle JDK 1.8 IBM JDK 1.8.0.7.20 and 1.8.0.6.15 For Arm nodes that run clients, use the following JDKs: OpenJDK 1.8.0_272 (built-in JDK, which can be obtained from the JDK folder in the cluster client installation directory.) BiSheng JDK 1.8.0_272 NOTE: For security purposes, the server supports only TLS V1.2 or later. By default, the IBM JDK supports only TLS V1.0. If the IBM JDK is used, set the startup parameter com.ibm.jsse2.overrideDefaultTLS to true. After the setting, the IBM JDK supports TLS V1.0, V1.1, and V1.2. For details, see https://www.ibm.com/docs/en/sdk-java-technology/8?topic=customization-matching-behavior-sslcontextgetinstancetls-oracle#matchsslcontext_tls. For details about the BiSheng JDK, see https://www.hikunpeng.com/en/developer/devkit/compiler/jdk.
7-zip	Used to decompress .zip and .rar packages. The 7-Zip 16.04 is supported.