JavaEnvironment

Java environment information

Since R2023a

Description

A JavaEnvironment object contains information about the Java^® program on your system. Java environment information persists across different MATLAB^® sessions.

Creation

To create a JavaEnvironment object or change the properties, call jenv. You cannot change the Java environment after MATLAB loads. To change the environment, restart MATLAB, and then call jenv.

Properties

Version — Java version

Read-only: string

This property is read-only.

Java version, returned as a string. To set the Version property, call jenv with the version argument set to a version number that MATLAB supports. For version information, see Versions of OpenJDK Compatible with MATLAB by Release.

Example: "Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode​"

Home — Home folder

Read-only: string

This property is read-only.

Home folder, returned as a string that contains the path to the Java.Home system property.

Example: "/Applications/sys/java/jre"

Library — Java Virtual Machine library file

Read-only: string

This property is read-only.

Java Virtual Machine library file, returned as a string that contains the path to the file.

Example: "/Applications/sys/java/jre/lib/server/libjvm.dylib"​

Status — Process status

Read-only: notloaded (default) | loaded

This property is read-only.

Process status, returned as notloaded or loaded.

Configuration — Settings value of Java

Read-only: "factory" (default) | "system" | custom Java path

This property is read-only.

Settings value of Java, returned as a string with one of these values:

• "factory" — Version included with MATLAB

• "system" — Default version on your system

• Custom Java path — Folder of an installed Java on your computer

To set the Configuration property, call jenv with the version argument.

Version History

Introduced in R2023a