Thread: Replacing dots with spaces

When I give in for example a String called : This.is.a.test and press the convert button , the textfield becomes empty.
I used String function : replace all to replace the dots with spaces.
When I set the text of the textfield with a normal string(" ") it works but with a variable it doesnt work.

Thanks in advance

Heres my code :

import java.awt.EventQueue;
 
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JButton;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
 
public class TestReplace {
 
	private JFrame frame;
	private JTextField inputString;
	String s;
 
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					TestReplace window = new TestReplace();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}
 
	/**
	 * Create the application.
	 */
	public TestReplace() {
		initialize();
	}
 
	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame();
		frame.setBounds(100, 100, 450, 300);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
 
		inputString = new JTextField();
		inputString.setBounds(67, 88, 307, 34);
		frame.getContentPane().add(inputString);
		inputString.setColumns(10);
 
		JLabel lblGeefStringIn = new JLabel("String :");
		lblGeefStringIn.setBounds(173, 55, 108, 14);
		frame.getContentPane().add(lblGeefStringIn);
 
		JButton btnNewButton = new JButton("Convert");
		btnNewButton.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent arg0) {
				s = inputString.getText();
				s = s.replaceAll(".", " ");
				inputString.setText(s);
			}
		});
		btnNewButton.setBounds(162, 150, 108, 23);
		frame.getContentPane().add(btnNewButton);
	}
}

I have no idea what your problem is. You need to provide a better explanation. Don't reply "Just run my code and you will see what I mean". If you can explain it clearly then I don't need to waste my time copying your code, compiling it and running it.

Try resizing the GUI. If your text shows up after that then you have a painting issue.

Ahhh, I just realised. The replaceAll method uses a regular expression and the dot has a special meaning in regex. Try escaping the dot.