The java environment variable refers to a parameter in the operating environment of the operating system. After configuring the java environment variables, you can use java and javac commands anywhere in the system. When executing commands, you no longer need to enter the bin directory under the java installation directory.
What are java environment variables
Environment variables:
Environment variables generally refer to some parameters used in the operating system to specify the operating environment of the operating system, such as the location of temporary folders and system folders.
An environment variable is an object with a specific name in the operating system, which contains information that will be used by one or more applications. For example, the path environment variable in Windows and DOS operating systems, when the system is asked to run a program without telling it the full path where the program is located, the system should not only search for the program in the current directory, but also go to the path specified in path. . Users can better run processes by setting environment variables.
java environment variable
To run Java programs, JDK must be installed. JDK is the core of the entire Java, including the Java compiler, JVM, a large number of Java tools and Java basic API.
Before we run the Java program under CMD, we must first start these tools and enter the command for the path where the tools are located. This is very troublesome, so environment variables appear. Let me put the tools Once the path is set, you only need to enter the program name path command every time to run the program.
We can right-click-Computer-Properties-Advanced System Settings-Environment Variables-add java environment variables to the PATH variable of user or system variables.
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