import javax.swing.JTextArea;
import javax.swing.text.JTextComponent;
publicclass Main {
publicstaticvoid main(String[] argv) throws Exception {
JTextComponent tc = new JTextArea("Initial Text");
int docLength = tc.getDocument().getLength();
String text = tc.getText();
// Get the last 3 characters
int offset = docLength - 3;
int len = 3;
text = tc.getText(offset, len);
}
}