Java examples for Swing:JTextComponent
Retrieving Text from a JTextComponent
import javax.swing.JTextArea; import javax.swing.text.BadLocationException; import javax.swing.text.JTextComponent; public class Main { public void m() { JTextComponent tc = new JTextArea("Initial Text"); // Get length int docLength = tc.getDocument().getLength(); // Get all text String text = tc.getText();//from w w w . j av a 2s . com try { // Get the first 3 characters int offset = 0; int len = 3; text = tc.getText(offset, len); // Get the last 3 characters offset = docLength - 3; len = 3; text = tc.getText(offset, len); } catch (BadLocationException e) { } } }