How to display object's attributes in JLabel? (java)

December 3, 2021

I’m making a restaurant menu in JFrame and I want to display my objects attributes "name" and "price" on the JLabel insted of printing it in the console.
I have the application frame set up with some labels:

public class App {
  public static void main(String[] args) {

    JFrame frame = new JFrame();
    JLabel labelName = new JLabel();
    JLabel labelPrice = new JLabel();

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(800, 650); 
    frame.setVisible(true);

    frame.add(labelName);
    labelName.setBounds(250, 50, 100, 50);

    frame.add(labelPrice);
    labelPrice.setBounds(250, 100, 100, 50);

my Menu class:

class Menu {
  public String name;
  public double price;

  //constructor
  public Menu(String name, double price) {
     this.name = name;
     this.price = price;
   }
}

and the object of class Menu:

Menu dish1 = new Menu("Whatever", 10.99);

How can I display the name and price attributes of my object dish1 in my labels?

>Solution :

You need to use "setText()" method on label object and create a panel where you can add your label. To display name and price you can format string given by object.

Menu dish1 = new Menu("Whatever", 10.99);
JFrame frame = new JFrame();
JLabel label = new JLabel();
JPanel main = new JPanel();

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(800, 650); 
frame.setVisible(true);
frame.add(label);

label.setText(String.format("%s %1$,.2f", dish1.name, dish1.price));
main.add(label);
frame.add(main);