Generics

public class JavaGenerics<E> {
    private E element;
    public JavaGenerics() {
    }

    public void setElement(E e) {
        element = e;
    }

    public E getElement() {
        return element;
    }

    public static void main(String[] args) {
        JavaGenerics<String> genString = new JavaGenerics<>();
        genString.setElement("Hello");
        System.out.println(genString.getElement());

        JavaGenerics<Integer> genInt = new JavaGenerics<>();
        genInt.setElement(999);
        System.out.println(genInt.getElement());
    }
}