Question

Can somebody tell me what does this mean? I’m going trough Java book and I’ve encontered this example :

public class Message {

    Message(){}

    public Message(String text){
        this.text = text;
    }

What does Message(){} Mean ?

Answer 1

It’s a package private empty constructor taking no arguments.

You can use it to create a new Message instance from any code in the same package, by using new Message();.

It’s worthwhile to know it will not initialize the text field, which will therefore hold the default null value.