Jdk properties are required for external clients to make environment …

[tondat]

…decisions and informs environment details

JdkProperties get the jdk properties for a given JDK path.
For the moment we are returning values for vendor and java version.

[jonpryor]

Conceptually, what we'd prefer to do is "import" this file:

https://github.com/xamarin/java.interop/blob/master/src/Java.Interop.BootstrapTasks/Java.Interop.BootstrapTasks/JdkInfo.cs

presumably as Xamarin.Android.Tools.AndroidSdk.JdkInfo (or Xamarin.Android.Tools.Jdk.JdkInfo?), with the major change that it is no longer a Task subclass, but instead a normal class:

public class JdkInfo {
    public JdkInfo (string jdkRoot);

    public string JavaHome {get;}
    public string Vendor {get;}
    public Version Version {get;}

    public static IEnumerable<JdkInfo> GetInstalledJdks (params string[] jdkRoots);
}

(This will require a fair bit of refactoring, but it looks plausible/straightforward.)