Bruce Eckel's Thinking in Java Contents | Prev | Next

// Using labels
import java.awt.*;
import java.applet.*;
public class Label1 extends Applet {
  TextField t1 = new TextField("t1", 10);
  Label labl1 = new Label("TextField t1");
  Label labl2 = new Label("                   ");
  Label labl3 = new Label("                    ",
  Button b1 = new Button("Test 1");
  Button b2 = new Button("Test 2");
  public void init() {
    add(labl1); add(t1);
    add(b1); add(labl2);
    add(b2); add(labl3);
  public boolean action (Event evt, Object arg) {
      labl2.setText("Text set into Label");
    else if( {
      if(labl3.getText().trim().length() == 0)
      if(labl3.getAlignment() == Label.LEFT)
      else if(labl3.getAlignment()==Label.CENTER)
      else if(labl3.getAlignment() == Label.RIGHT)
      return super.action(evt, arg);
    return true;
} ///:~ 

The first use of the label is the most typical: labeling a TextField or TextArea. In the second part of the example, a bunch of empty spaces are reserved and when you press the “Test 1” button setText( ) is used to insert text into the field. Because a number of blank spaces do not equal the same number of characters (in a proportionally-spaced font) you’ll see that the text gets truncated when inserted into the label.


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