Question

In JSF practically speaking in terms of coding what is the difference between a managed bean and an unmanaged bean

Answer 1

• Managed Beans are regular java beans class registered with jsf and managed by jsf framework.
• Managed beans contains the getters and setters methods, business logics or even more.
• Managed beans is used as a model for UI.
• Managed bean is created with a constructor with no arguments, a set of properties, and a set of methods that perform functions for a component\
• managed beans are considered the model and the controller at the same time
• ex: @ManagedBean(name="message"), this annotation marks the managed bean.
• Where as unmanaged Beans are not regular java beans class registered with jsf.
• basically there are unmanaged objects, which we interrelate with unmanaged bean.
  
  Managed Bean:

  import javax.faces.bean.ManagedBean;

  import javax.faces.bean.SessionScoped;

  @ManagedBean

  @SessionScoped

  public class Beannn {

  private String message = "Hello managed Bean";

  public String getMessage() {

  return message;

  }

  public void setMessage(String message) {

  this.message = message;

  }

  }

  Unmanaged Bean:

  public class unmanaged{

  private String message = "Hello unmanaged Bean";

  public String getMessage() {

  return message;

  }

  public void setMessage(String message) {

  this.message = message;

  }

  }