Adding components to BorderLayout - border-layout

Question

I'm trying to implement BorderLayout within IntelliJ and am having trouble getting it to work. It compiles fine, but when it runs I see the viewer for a second and then it crashes. The code I currently have is
Button Next=new Button("Next");
Button Back=new Button("Back");
Container panel1=new Container();
Container panel2=new Container();
home = new Form("Home");
home.setLayout(new BorderLayout());
panel1.setLayout(new BorderLayout());
panel2.setLayout(new BorderLayout());
home.addComponent(BorderLayout.EAST,panel1);
home.addComponent(BorderLayout.WEST,panel2);
panel1.addComponent(Next);
panel2.addComponent(Back);
The error I get after it crashes is "Cannot add component to BorderLayout Container without constraint parameter". I tried researching a constraint parameter and also working with BorderLayout in IntelliJ, but any texts I found were either not helpful or too complicated to understand. Thanks so much!

Answer 1

The error message is telling you that if you want to add a component to a border layout you have to specify where to put it. You've done this when adding components to home, but you haven't when you add components to panel1 and panel2. You need to add BorderLayout.EAST (or WEST, or whatever) to get:
panel1.addComponent(BorderLayout.EAST, Next);
panel2.addComponent(BorderLayout.WEST, Back);
However, I think you're using this wrong. You probably don't want a border layout in panel1 or panel2 -- they're fine with the default flow layout, so if you remove the panel1/2.setLayout() lines your code should work fine.
BTW: In java we don't use capital letters at the start of variables, so Next and Back should be next and back. Also, panel1 should be something like nextPanel, and panel2 should be something like backPanel.
To add one more thing -- nobody uses awt any more. We've all moved on (mostly to html5). So, trying this in swing, you would get:
import javax.swing.*;
...
JButton next = new JButton("Next");
JButton back = new JButton("Back");
JFrame home = new JFrame("Home");
home.setLayout(new BorderLayout());
home.add(back, BorderLayout.WEST);
home.add(next, BorderLayout.EAST);