GUI buttons in array

Question

I am working on a project and we are learning arrays. I need to create a GUI that has 12 buttons but need to be in an array. I am not finished with my code, so it may have errors because of that.

Where I am getting an error is on my

JButton[] = { new Jbutton("1"), ...};

the 2nd ] has a red line under it and gives me the error

Syntax error on token "]" VariableDeclaratorld expected after this token

Heres my code so far:

public class TextButtonsHW extends JFrame implements ActionListener {
private JButton[] buttons;  
private JTextArea textArea; 
private final int ENTER;    
private final int SPACE;    
private final int CLEAR;    

public TextButtonsHW(String title) {
    super(title); 
    JButton[] = { new JButton("A"), new JButton("B"), new JButton("C"),
                  new JButton("1"), new JButton("2"), new JButton("3"),
                  new JButton("X"), new JButton("Y"), new JButton("Z"),
                  new JButton("Enter"), new JButton("Space"), new JButton("Clear")};
    }
}

General tip. Don't extend JFrame, just use an instance of a frame. — Andrew Thompson
– Andrew Thompson, Commented Apr 21, 2013 at 4:57

Andrew Thompson · Accepted Answer · 2013-04-21 04:55:51Z

2

JButton[] = {

Should be something like:

JButton[] buttonArray = {

answered Apr 21, 2013 at 4:55

Andrew Thompson

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Comments

aymankoo · Accepted Answer · 2013-04-21 04:58:30Z

1

Where is the name of the variable???

 JButton[] buttons = { new JButton("A"), new JButton("B"), new JButton("C"),
              new JButton("1"), new JButton("2"), new JButton("3"),
              new JButton("X"), new JButton("Y"), new JButton("Z"),
              new JButton("Enter"), new JButton("Space"), new JButton("Clear")};

answered Apr 21, 2013 at 4:58

aymankoo

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Comments

Fls'Zen · Accepted Answer · 2013-04-21 05:03:16Z

1

You have declared buttons as an instance variable:

private JButton[] buttons;

So you need to set that variable as so:

buttons = new JButton[] { new JButton("A") ...

edited Apr 21, 2013 at 5:03

answered Apr 21, 2013 at 4:57

Fls'Zen

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2 Comments

Andrew Thompson Over a year ago

That form of initializing an array is only valid when the array is declared at the same time as the variable is declared.

Fls'Zen Over a year ago

Whoops, missed that. Added initialization to answer.

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