Use reflection: Java’s Reflection API allows inspection of generic types—but with some limitations. Variance in generics Generics are invariant : Generics in Java are invariant , meaning List ...

Since Java 21, wrapper classes have played an increasingly sophisticated role in Java’s type system. Here’s everything you ...

java.util.function.UnaryOperator @FunctionalInterface public interface UnaryOperator<T> extends Function<T,T> T apply(T t) Applies this function to the given argument. Parameter Types: T - the input ...