Array of Strings problem

[Rus Corina]

Hello. I have a small problem with getting the length of an array of strings. What I want to do is write a date of the format dd.mm.yyy in a textfield, and modify it in the program in the format yyyy.mm.dd. For that, i need to process the initial data, split it into 3 strings(month, day,year) and them rearrange them in the way i want them to be. I have the following code:

String str=a.getText();//a is a textfield
                String[] s=str.split(".");
                System.out.println(s.length); //this doesn't work, it tells me that the length of the array s is 0, when it should actually be 3.

What am I doing wrong?

Here is the class where i did it,maybe it helps

public class NewClass extends JFrame{
    
    JPanel p=new JPanel();
    JTextArea a=new JTextArea();
    JButton b=new JButton("Da");
    
    NewClass()
    {
        super("Testing");
        setBounds(0, 50, 550, 350);
        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        p.setLayout(null);
        a.setBounds(10, 50, 100, 30);
        b.setBounds(10, 90, 100, 30);
        
        b.addActionListener(new ActionListener() {//modifica o localitate

            public void actionPerformed(ActionEvent e) {

                String str=a.getText();
                String[] s=str.split(".");
                System.out.println(s.length);
                
        
            }
        });
        p.add(a);
        p.add(b);
        this.add(p);
        setVisible(true);
    }
    
    public static void main(String[] arguments) {
        NewClass n=new NewClass();
    }
}

[Rob Spoor]

String.split uses regular expressions, and "." has special meaning in regular expressions. Try escaping it: "\\."

[Matthew Brown]

I'm not sure if it's the only problem, but I'd suggest taking a look at the definition of String.split. The argument it takes is a regular expression, and "." is a special character in regular expressions, so it needs escaping.

Edit: i.e. What Rob Said.

[Rus Corina]

Oh goodness, thank you very much. It works now

[Rob Spoor]

You're welcome.