java generic type parameters (Type Parameters)

Type parameters (type parameters) give type argrments (type argrments) position

public interface List<E>{
    
    
    boolean add(E e);
}

List<String> list = new LinkedList<>();
list.add("123")

Used in the Java List interface source code <E>to define type parameters, when we call the interface method, we use Stringthis type argument to replace

Reference:
http://www.angelikalanger.com/GenericsFAQ/FAQSections/TypeParameters.html#FAQ001