"JTextfield 不像我想要的那样显示"

Question

I'm new to Java and I can't find a simple solution. In the image below, you can see what my problem is. I want to write a program, where I can create playlists and safe them, but I am already stuck at the beginning because the JTextfield<\/code> is too small.

import javax.swing.JFrame;

public class Main {
    
    public static void main(String args[]) {
        JFrame w = new Layout();
        w.setVisible(true);
        w.setSize(600, 600);
        w.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        w.setLocationRelativeTo(null);
        w.setResizable(true);
    }
}

Answer 1

You can give to the JTextField<\/code> a size in this way:

input = new JTextField(20);

Answer 2

When the int in the constructor is to big the JTextField will bug

I think it's depend of the size of the container.

here if i write 10 instead of 5 it's doesn't work:

Dimension dim = getPreferredSize();
dim.width = 150;
setPreferredSize(dim);
        
nameLabel = new JLabel("Name: ");
nameField = new JTextField(5);