How do I remove an object from an ArrayList in Java?

Question

I have an ArrayList that contains some object, such as User, and each object has a name and password property. How can I

Answer 1

Another thought: If User class can be uniquely defined by the username and if you override equals with something like:

public boolean equals(Object arg0) {
    return this.name.equals(((user) arg0).name);
}

You can remove the User without iterating through the list . You can just do :

 list.remove(new User("John Doe"))

Answer 2

Just search through the ArrayList of objects you get from the user, and test for a name equal to the name you want to remove. Then remove that object from the list.

Answer 3

Your code might look like this：

List<User> users = new ArrayList<User>();

public void removeUser(String name){
    for(User user:users){
        if(user.name.equals(name)){
            users.remove(user);
        }
    }
}