How can I control the width of JTextFields in Java Swing?

Question

I am trying to have several JTextFields on a single row, but I don't want them to have the same width. How can I control the width and make some of them wider than others? I want that they together take up 100% of the total width, so it would be good if I could use some kind of weigthing.

I have tried with .setColumns() but it doesn't make sense.

Here is an example, where I am using three rows with three strings that should appear as in columns:

import java.awt.GridLayout; import javax.swing.BoxLayout; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextField;  public class RowTest extends JPanel {      class Row extends JComponent {         public Row(String str1, String str2, String str3) {             this.setLayout(new BoxLayout(this, BoxLayout.X_AXIS));              JTextField fld1 = new JTextField(str1);             JTextField fld2 = new JTextField(str2);             JTextField fld3 = new JTextField(str3);              fld1.setColumns(5); // makes no sense              this.add(fld1);             this.add(fld2);             this.add(fld3);         }     }      public RowTest() {     this.setLayout(new GridLayout(5,0));      this.add(new Row("Short", "A long text that takes up more space",         "Short again"));     this.add(new Row("Longer but short", "Another long string", "Short"));     this.add(new Row("Hello", "The long field again",         "Some info"));     }      public static void main(String[] args) {         new JFrame() {{ this.getContentPane().add(new RowTest());                             this.pack(); this.setVisible(true); }};     }  } 

Answer 1

yourTextField = new JTextField("", 20); 

if you start it like this it sets the textfield to be empty and to have 20 collumns