How to use

add

method

in

org.jfree.ui.L1R1ButtonPanel

/**
 * Standard constructor - creates a two-button panel with the specified labels.
 *
 * @param leftLabel  the label for the left button.
 * @param rightLabel  the label for the right button.
 */
public L1R1ButtonPanel(final String leftLabel, final String rightLabel) {
  setLayout(new BorderLayout());
  this.left = new JButton(leftLabel);
  this.right = new JButton(rightLabel);
  add(this.left, BorderLayout.WEST);
  add(this.right, BorderLayout.EAST);
}

/**
 * Standard constructor - creates a two-button panel with the specified labels.
 *
 * @param leftLabel  the label for the left button.
 * @param rightLabel  the label for the right button.
 */
public L1R1ButtonPanel(final String leftLabel, final String rightLabel) {
  setLayout(new BorderLayout());
  this.left = new JButton(leftLabel);
  this.right = new JButton(rightLabel);
  add(this.left, BorderLayout.WEST);
  add(this.right, BorderLayout.EAST);
}

/**
 * Standard constructor - creates a two-button panel with the specified labels.
 *
 * @param leftLabel  the label for the left button.
 * @param rightLabel  the label for the right button.
 */
public L1R1ButtonPanel(final String leftLabel, final String rightLabel) {
  setLayout(new BorderLayout());
  this.left = new JButton(leftLabel);
  this.right = new JButton(rightLabel);
  add(this.left, BorderLayout.WEST);
  add(this.right, BorderLayout.EAST);
}