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Bryan Romero
Asked: 2020-12-16 08:49:17 +0800 CST 2020-12-16 08:49:17 +0800 CST

Simplify method using lambda expressions

  • 772

I have this simple method:

public void setComboBoxItems(List<User> users, List<Client> clients) {
    for (User user : users) {
        usersIds.addItem(user.getId());
    }

    for (Client client : clients) {
        clientsIds.addItem(client.getId());
    }
}

What it does is add items to 2 JComboBox , the items added are the IDs of the Users and Clients contained in the 2 lists named users-clients .

Is there a way to simplify this method, perhaps by calling users.forEach()?

java

1 Answers

  1. Best Answer

    My goal was to have fewer lines of code and do it with lambda expressions, so what I did was use .forEach.

    public void setComboBoxItems(List<User> users, List<Client> clients) {
    users.forEach(user -> usersIds.addItem(user.getId()));
    clients.forEach(client -> clientsIds.addItem(client.getId()));
}

    Which does practically the same as the previous method.

    Let's say you could have done something like this:

    public void setComboBoxItems(List<User> users, List<Client> clients) {
    for (User user : users) {usersIds.addItem(user.getId());}
    for (Client client : clients) {clientsIds.addItem(client.getId());}
}

    The same code as before but trying to save space but it's not what I'm looking for since my goal is to learn and make use of lambda expressions.

    • 2