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1. INSTALL JAVA SE RUNTIME ENVIRONMENT 8 INSTALL
2. INSTALL JAVA SE RUNTIME ENVIRONMENT 8 UPDATE
3. INSTALL JAVA SE RUNTIME ENVIRONMENT 8 CODE
4. INSTALL JAVA SE RUNTIME ENVIRONMENT 8 PLUS
5. INSTALL JAVA SE RUNTIME ENVIRONMENT 8 DOWNLOAD

That makes it the first directory to be searched for the corresponding executable when you run Java commands such as java or javac.

INSTALL JAVA SE RUNTIME ENVIRONMENT 8 UPDATE

The scripts update the JAVA_HOME environment variable and insert the bin directory at the beginning of the Path variable. In the files javaX.bat and javaX.ps1, you probably have to adjust some paths to the installed Java versions.

INSTALL JAVA SE RUNTIME ENVIRONMENT 8 CODE

$env:Path = $env:JAVA_HOME + '\bin ' + $env:Path Write-Output " $javaVersion activated." Code language: PowerShell ( powershell ) ::SetEnvironmentVariable( "JAVA_HOME", $env:JAVA_HOME, ::Machine) Set Path= %JAVA_HOME%\bin %Path% echo %~ 1 activated. If % 1 = "Java 20" set JAVA_HOME=C:\Program Files\Java\jdk- 20 if % 1 = "Java 21" set JAVA_HOME=C:\Program Files\Java\jdk- 21 if "%~ 2" = "perm" ( 3" set JAVA_HOME=C:\Program Files (x86)\Java\jdk1. 2" set JAVA_HOME=C:\Program Files (x86)\Java\jdk1. I suggest you unpack the scripts to C:\Program Files\Java\scripts.Ĭall javaX "Java 20" % 1 Code language: DOS.

INSTALL JAVA SE RUNTIME ENVIRONMENT 8 PLUS

plus two common scripts javaX.bat and javaX.ps1.

INSTALL JAVA SE RUNTIME ENVIRONMENT 8 INSTALL

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 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).Java SE 17 / OpenJDK 17 (→ The most important new features in Java 17).Java SE 16 / OpenJDK 16 (→ The most important new features in Java 16).Java SE 15 / OpenJDK 15 (→ The most important new features in Java 15).Java SE 14 / OpenJDK 14 (→ The most important new features in Java 14).Java SE 13 / OpenJDK 13 (→ The most important new features in Java 13).Java SE 12 / OpenJDK 12 (→ The most important new features in Java 12).Java SE 11 / OpenJDK 11 (→ The most important new features in Java 11).Java SE 10 / OpenJDK 10 (→ The most important new features in Java 10)Īttention – you may use the following Oracle distributions only for private purposes and development:.Starting with the following versions, you don't need to change the default installation directories: Java SE 1.4 – Installed to C:\j2sdk1.4.2_19\ by default – I recommend changing this to C:\Program Files (x86)\Java\jdk1.4.2_19\.Java SE 1.3 – Installed to C:\jdk1.3.1_28\ by default – I recommend changing this to C:\Program Files (x86)\Java\jdk1.3.1_28\.Java SE 1.2 – Installed to C:\jdk1.2.2\ and C:\Program Files (x86)\JavaSoft\JRE\1.2\ by default – I recommend changing this to C:\Program Files (x86)\Java\jdk1.2.2\ and C:\Program Files (x86)\Java\jre1.2.2\ for the sake of clarity.Java SE 1.1 – You can no longer install this version on 64-bit Windows.

INSTALL JAVA SE RUNTIME ENVIRONMENT 8 DOWNLOAD

You can download and run the installer for each version, which automatically installs the versions in separate directories. Installing multiple Java versions in parallel is incredibly easy in Windows. Let's go… Step 1: Installing Multiple Java Versions To enable these Java version change commands on your system as well, follow this step-by-step guide.