# Amazon Corretto 27 Installation Instructions for Amazon Linux 2023
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 This topic describes how to install and uninstall Amazon Corretto 27 on a host or container running the Amazon Linux 2023 operating systems. 

## Download and Install RPMs Manually
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1.  Download RPMs from the [Downloads](downloads-list.md) page for your CPU architecture. To install the JDK, you will need to download the RPMs for both the JDK and the JRE. 

1.  Install using `yum localinstall`.   
**Example**  

   ```
   sudo yum localinstall java-27-amazon-corretto*.rpm
   ```

## Verify Your Installation
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 In the terminal, run the following command to verify the installation. 

**Example**  

```
java -version
```
Expected output for 27.0.0:   

```
openjdk 27 2026-08-06
 OpenJDK Runtime Environment Corretto-27.0.0.33.1 (build 27+33-FR)
 OpenJDK 64-Bit Server VM Corretto-27.0.0.33.1 (build 27+33-FR, mixed mode, sharing)
```

 If you see a version string that doesn't mention `Corretto`, run the following command to change the default `java` or `javac` providers. 

**Example**  

```
sudo alternatives --config java
```
If using the JDK you should also run:  

```
sudo alternatives --config javac
```