how to install java on mac install java jdk on macos

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installing the java development kit (jdk) on macos is a straightforward process. below, i’ll provide a detailed tutorial on how to do it, including code examples and commands.

step 1: check for existing java installations

before installing the jdk, check if you already have java installed on your macos. open the terminal and run:
if java is installed, you will see the version information. if not, you will receive a message indicating that java is not found.

step 2: download the jdk

1. **go to the oracle jdk download page**:
- visit the [oracle jdk download page](https://www.oracle.com/java/technologies/javase-jdk11-downloads.html) (or the version you wish to install).

2. **select the macos installer**:
- choose the appropriate macos version (e.g., jdk 11, jdk 17, etc.) and download the `.dmg` file.

step 3: install the jdk

after downloading, follow these steps to install the jdk:

1. **open the downloaded `.dmg` file**:
- double-click the downloaded `.dmg` file to mount it.

2. **run the installer**:
- inside the mounted disk image, double-click on the `jdk` installer package (e.g., `jdk-11.jdk`).
- follow the on-screen instructions to complete the installation.

step 4: set java_home environment variable

setting the `java_home` environment variable helps java applications locate the installed jdk. to set this variable, follow these steps:

1. open the terminal.

2. edit your shell profile file. this could be `.bash_profile`, `.bashrc`, or `.zshrc`, depending on whether you use bash or zsh (the default shell for macos catalina and later). for example:



3. add the following line to set `java_home`:



4. save the file and exit the editor (in nano, press `ctrl + x`, then `y`, and hit `enter`).

5. reload your profile to apply the changes:



step 5: verify the installation

to ensure that the installation was successful, you can check the java version and the `java_home` variable.

1. check the java version:



you should ...

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