[menyarito]

hello,
I configure hibernate in myeclipse following the
next tutorial:
http://www.myeclipseide.com/documentation/quickstarts/hibernate/
running the project it gives me an error message despite
that data is properly recorded in the database
error:

Exception in thread "main" java.lang.NullPointerException
    at modele.Test.printUser(Test.java:96)
    at modele.Test.listUser(Test.java:55)
    at modele.Test.main(Test.java:15)

my class Test_hibernate.java:

package mypackage;

import org.hibernate.Transaction;

public class tesett {

    public static void main(String[] args) {
        addUser();
        listUser();
        changeUser();
    }
    
    private static void addUser() {
        User user = new User();
        user.setId(1);
        user.setUsername("jdoe");
        user.setPassword("1234");
        user.setFirstName("John");
        user.setLastName("Doe");
        user.setDateCreated(System.currentTimeMillis());
        
        UserDAO dao = new UserDAO();
        Transaction tx = dao.getSession().beginTransaction();        
        dao.save(user);        
        tx.commit();
        dao.getSession().close();
    }
    
    private static void listUser() {
        UserDAO dao = new UserDAO();
        User user = dao.findById(1);
        printUser("Printing User, ", user);
        dao.getSession().close();
    }
    
    private static void changeUser() {
        UserDAO dao = new UserDAO();
        User user = dao.findById(1);
        user.setUsername("jsmith");
        user.setPassword("abcd");
        user.setFirstName("Jane");
        user.setLastName("Smith");
        Transaction tx = dao.getSession().beginTransaction();
        dao.save(user);
        tx.commit();
        User updatedUser = dao.findById(1);
        printUser("Printing Updated User, ", updatedUser);
        dao.getSession().close();
    }

    private static void printUser(String extraText, User user) {
        System.out.println(extraText 
                            + " User[Username: " 
                            + user.getUsername() 
                            + ", Password: " 
                            + user.getPassword() 
                            + ", First Name: " 
                            + user.getFirstName() 
                            + ", Last Name: " 
                            + user.getLastName() + "]");
    }
}

thank you in advance

[support-swapna]

menyarito,

I could not replicate it at my end.

This should be due to a wrong value being passed to findById().
Can you recheck if you are passing the proper id to the findById() for printUser?
Also check if the dao.findById() is returning a valid user object or not.

[menyarito]

super, thank you very much

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