how to switch java version and set java home path on mac os m1 m2
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switching java versions and setting the java_home path on an m1 or m2 mac involves a few straightforward steps. this process can be done using the terminal, and you can manage multiple java versions easily with tools like sdkman! or homebrew. below is a comprehensive tutorial on how to achieve this.
step 1: install homebrew (if not already installed)
homebrew is a package manager for macos that simplifies the installation of software.
1. open the terminal.
2. run the following command:
```bash
/bin/bash -c "$(curl -fssl https://raw.githubusercontent.com/hom...)"
```
3. follow the on-screen instructions to complete the installation.
step 2: install java versions
you can use homebrew to install different versions of java. for example, to install openjdk 8, 11, and 17, run:
```bash
brew tap homebrew/cask-versions
brew install --cask temurin8
brew install --cask temurin11
brew install --cask temurin17
```
step 3: switch java versions
to switch between installed java versions, you can use the `java_home` command. this command helps set the java_home environment variable to the desired java version.
1. to see all installed java versions, run:
```bash
/usr/libexec/java_home -v
```
this should output a list of installed jdks, something like this:
```
matching java virtual machines (3):
17.0.0 (x86_64) "eclipse adoptium" - /library/java/javavirtualmachines/temurin-17.jdk/contents/home
11.0.11 (x86_64) "eclipse adoptium" - /library/java/javavirtualmachines/temurin-11.jdk/contents/home
1.8.0_292 (x86_64) "eclipse adoptium" - /library/java/javavirtualmachines/temurin-8.jdk/contents/home
```
2. to switch to a specific version (for example, openjdk 11), run:
```bash
export java_home=$(/usr/libexec/java_home -v 11)
```
3. to confirm that the java_home has been set correctly, run:
```bash
echo $java_home
```
4. you can also check the active java version with:
``` ...
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