Enumerate the content elements with a ElementIterator
import javax.swing.JTextArea;
import javax.swing.text.Document;
import javax.swing.text.Element;
import javax.swing.text.ElementIterator;
public class Main {
public static void main(String[] argv) throws Exception {
JTextArea textArea = new JTextArea("word1 word2\nword3\nword4");
Document doc = textArea.getDocument();
ElementIterator it = new ElementIterator(doc.getDefaultRootElement());
Element e;
while ((e = it.next()) != null) {
if (e.isLeaf()) {
int rangeStart = e.getStartOffset();
int rangeEnd = e.getEndOffset();
String line = textArea.getText(rangeStart, rangeEnd - rangeStart);
System.out.println(line);
}
}
}
}
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