How to convert a list with properties to a another list the java 8 way?

you will have to use something like below :

List<ProductManager> B = A.stream()
        .map(developer -> new ProductManager(developer.getName(), developer.getAge()))
        .collect(Collectors.toList());

// for large # of properties assuming the attributes have similar names
//other wise with different names refer this

List<ProductManager> B = A.stream().map(developer -> {
            ProductManager productManager = new ProductManager();
            try {
                PropertyUtils.copyProperties(productManager, developer);
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            return productManager;
        }).collect(Collectors.toList());

        B.forEach(System.out::println);