Automatically extend its height when JTextArea gains focus

• download example.jar
• download src.zip
• repository

Code

textArea.addFocusListener(new FocusAdapter() {
  @Override public void focusLost(FocusEvent e) {
    String text = textArea.getText();
    label.setText(text.isEmpty() ? " " : text);
    cardLayout.show(cp, "TextField");
  }
});
label.addFocusListener(new FocusAdapter() {
  @Override public void focusGained(FocusEvent e) {
    cardLayout.show(cp, "TextArea");
    textArea.requestFocusInWindow();
  }
});

References

• Automatically extend its height when JTextArea gains focus(Japanese)
• java - It is posible to expand a JTextArea or JTextPane by clicking on it? - Stack Overflow