Cant access property of managed bean from another managed bean

Question

I want to access the property of a @SessionScoped bean in another bean using @ManagedProperty. In short, I want to access the name property of firs

Answer 1

It's not possible to access an injected dependency in the constructor. You're basically expecting that Java is able to do something like this:

SecondBean secondBean; // Declare.
secondBean.firstBean = new FirstBean(); // Inject.
secondBean = new SecondBean(); // Construct.

It's absolutely not possible to set an instance variable if the instance is not constructed yet. Instead, it works as follows:

SecondBean secondBean; // Declare.
secondBean = new SecondBean(); // Construct.
secondBean.firstBean = new FirstBean(); // Inject.

Then, in order to perform business actions based on injected dependencies, use a method annotated with @PostConstruct. It will be invoked by the dependency injection manager directly after construction and dependency injection.

So, just replace

public SecondBean() {
    System.out.println(firstBean.getName());
}

by

@PostConstruct
public void init() { // Note: method name is fully to your choice.
    System.out.println(firstBean.getName());
}