Using sdkman to install and manage jdk versions

NOTE: This will work only in Unix environments

Install it and follow the documentation
Command to see the list of tools that can be installed with sdkman
```
sdk list
```

Command to see the list of available jdk versions

sdk list java

Sample output

================================================================================
Available Java Versions for Linux 64bit
================================================================================
 Vendor        | Use | Version      | Dist    | Status     | Identifier
--------------------------------------------------------------------------------
 Corretto      |     | 22           | amzn    |            | 22-amzn
                     |     | 21.0.2       | amzn    |            | 21.0.2-amzn
                     |     | 17.0.10      | amzn    |            | 17.0.10-amzn
                     |     | 11.0.22      | amzn    |            | 11.0.22-amzn
                     |     | 8.0.402      | amzn    |            | 8.0.402-amzn
 Dragonwell    |     | 17.0.10      | albba   |            | 17.0.10-albba
                     |     | 17.0.9       | albba   |            | 17.0.9-albba
                     |     | 11.0.22      | albba   |            | 11.0.22-albba
                     |     | 11.0.21      | albba   |            | 11.0.21-albba

The Status column will say installed for the versions that are already installed in the computer. The Status column will say local only for the version that is the current default.

Command to install a specific version of Java
```
sdk install java 17.0.10-zulu
```
Command to use a specific version in a shell
```
sdk use java 17.0.10-zulu
```
Command to see the current version
```
sdk current
```

Installing other tools

sdk install maven 3.6.3
sdk install gradle 6.2.2
sdk install visualvm 2.0

Where does sdkman unpack these installations?
```
$HOME/.sdkman/candidates/java
```

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