IDEA does not provide online upgrades, so installation and upgrade has always been a problem of everyone's headache. But how can we make the installation and upgrade easier, we will talk about the Idea recommended approach. Before explaining, let's talk about the IDEA version number, the IDEA version number has four parts: the main version number times number correction version number compiling version number, such as the main version number "4", subsequence No. "5", the revised version number is "3", the compilation version number is 2250. The main version number times the number determines the function of the IDEA current version. The combination of the two is the function version. It is an important basis for the upgrade. The revised version number just records the bug that modifies the function version, and each revised version contains more The completion of the completion of this revised version will eventually achieve.
The IDEA program consists of three parts: 1 Run the program, 2 system settings, 3 data cache. We downloaded the running program from the JetBrains website, and the program generates configuration and data cache in the run. This is also our important data. We must retain when upgraded. Let's take a look at how to install and upgrade Intellij Idea.
1 Establish a function version configuration and data cache save directory, here we can create a directory to save all feature version data information, such as "E: / Intellij_Settings", and establish a corresponding function version data information in this directory Directory, such as "45X", "50X", so we completed the establishment of the Intellij IDEA data information storage directory.
2 Install Intellij Idea, here we give you a prompt, the IDEA installation directory name is best to include the compiling version number, which is easy to identify the version and upgrade, such as the IDEA_HOME directory name is "intellij-2250" or "intellij-3177 ". Idea 5.0 previous version supports imported previous versions, what you do is to select the previous version when you install, and IDEA will complete all relevant settings. After the IDEA 3177, if you use Windows's local installer under Windows version, the purpose is to reduce the size of the IDEA installation package, and the installation process does not import prompts, this feature may be added later.
3 After the program is installed, please do not start the IDEA immediately, first check the configuration, IDEA 5.0 previous version can be set via IDEA.lax, in Idea.lax, we only need to check Lax.nl.java.Option.Additional This key value, here we only need to set the IDEA.System.Path and idea.config.path system properties, as follows: -didea.system.path = "e: // intellij_settings // 45x // system" -didea .config.path = "E: // intellij_settings // 45x // config" IDEA 5.0 After using the IDEA.Properties file, I only change this file for IDEA 5.0: # path to idea config folderidea.config .path = E: // IntelliJ_Settings // 50X // config # path to IDEA system folderidea.system.path = E: // IntelliJ_Settings // 50X // system # path to user installed plugins folderidea.plugins.path = E: // intellij_settings // 50x // config // plugins You can make this file to make a backup, after installing the new version IDEA, override it. 4 Start IDEA, if you are upgraded, you will find that there is no feeling.
Summary: IdeA uses this way, separating running procedures and program data information, and data information is placed in a separate directory for management, providing convenience for your IDE upgrade installation.
