![]() Here is the link: scripts-up-to-java21.zip To change the Java version on the command line, I have prepared some batch files that you can copy to your system. The fastest way to change the environment variables is to press the Windows key and type "env" – Windows then offers "Edit the system environment variables" as a search result:Ĭheck your Java version with "cmd" Step 3: Install the Scripts to Change the Java Version The Java installers create various environment variables, which you need to clean up first (see below). Manually Setting the Java Environment Variables Some programs, such as Eclipse, define the Java version in a separate configuration file (for Eclipse, for example, this is the entry "-vm" in the eclipse.ini file). These variables should always point to the same Java installation to avoid inconsistencies. Path – is used when running a Java binary (such as java and javac) from the console.JAVA_HOME – many start scripts use this variable.The following two environment variables decide which Java version an application uses: Step 2: Define Java Environment Variables You should use it only for testing purposes: The following version is currently an early access build. Java SE 21 / OpenJDK 21 (→ The most important new features in Java 21). ![]() Java SE 20 / OpenJDK 20 (→ The most important new features in Java 20).Java SE 19 / OpenJDK 19 (→ The most important new features in Java 19).Java SE 18 / OpenJDK 18 (→ The most important new features in Java 18). ![]()
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