Java tutorial
import javax.swing.JFrame; import javax.swing.JTextArea; public class Main { public static void main(String[] args) { JFrame f = new JFrame(); JTextArea ta = new JTextArea(5, 32); ta.setText("That's one small step for man...\nOne giant leap for mankind."); ta.setSelectionStart(10); ta.setSelectionEnd(20); f.getContentPane().add(ta); f.setSize(100, 100); f.setVisible(true); } }