I’m not overly familiar with Java, in C# i can declare a custom attribute for a property as follows:

Create attribute type-

public class MyCustomAttribute: Attribute
{
    public string SomeProperty { get; set; }
}

Then decorate anything (class, method, property, …) with the attribute:

[MyCustomAttribute(SomeProperty = "foo bar")]
public class Foo
{

}

This can then be read using reflection at runtime.

Searching shows me ‘custom attributes’ are something used in unit testing. Is there anything the same or similar in java?