How to use

putClientProperty

method

in

javax.swing.JPasswordField

@Override
protected JTextComponent createField() {
  JPasswordField field = new JPasswordField();
  field.putClientProperty("JComponent.sizeVariant", "small");
  field.setFont(Theme.SMALL_BOLD_FONT);
  field.addActionListener(this);
  field.addFocusListener(new FocusAdapter() {
    public void focusLost(FocusEvent e) {
      commitTextFieldValue();
    }
  });
  return field;
}

JPasswordField jt=new JPasswordField(20);
     // Put client property
     jt.putClientProperty("JPasswordField.cutCopyAllowed",true);
     add(jt);

passwordField.putClientProperty("JPasswordField.cutCopyAllowed", true);