Swing
Labels and text fields
Labels
Two versions of a panel that displays two text fields
Common constructors of the JTextField class
| Constructor | Description |
|---|---|
| JTextField(intColumns) | Creates a text field with the specified number of columns. |
| JTextField(String, intColumns) | Creates a text field that starts with the text specified by the string and contains the specified number of columns. |
Common methods of the JTextField class
| Method | Description |
|---|---|
| getText() | Returns the text in this text field as a String object. |
| setText(String) | Sets the text in this field to the specified string. |
| setColumns(intSize) | Sets the number of columns to the specified value. |
| setEditable(boolean) | Determines whether or not the field can be edited. |
| setFocusable(boolean) | Determines whether or not the field can receive the focus. |
A class that creates the panel with two text fields
class TextFieldPanel extends JPanel
{
private JTextField textFieldOne, textFieldTwo;
public TextFieldPanel()
{
textFieldOne = new JTextField("Test", 20);
this.add(textFieldOne);
textFieldTwo = new JTextField(10);
this.add(textFieldTwo);
}
}
Code that modifies the second text field
public void modifyFields()
{
String data = textFieldOne.getText();
textFieldTwo.setText(data);
textFieldTwo.setColumns(20);
textFieldTwo.setEditable(false);
}
