How to Initialize class with Class.forName() that has parameterized constructor?

Use Class.getConstructor() and call Constructor.newInstance() method.

For example, take the below constructor for Employee class which take 2 arguments.

public Employee(int empId, String name) {
}

We need to invoke getConstructor method by passing argument values as shown below.

Constructor empC = Class.forName("Employee").getConstructor(Integer.TYPE, String.class);
Employee employee= (Employee) empC.newInstance(345, "John Smith");

Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!

Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.