Here you can find the source of setAction(JComboBox cmb, ActionListener listener, String actionCommand)
public static void setAction(JComboBox cmb, ActionListener listener, String actionCommand)
//package com.java2s; /*//w w w .j ava2s . co m * "BSLib", Brainstorm Library. * Copyright (C) 2017 by Sergey V. Zhdanovskih. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.awt.event.ActionListener; import javax.swing.*; public class Main { public static void setAction(AbstractButton btn, ActionListener listener, String actionCommand) { btn.addActionListener(listener); btn.setActionCommand(actionCommand); } public static void setAction(JComboBox cmb, ActionListener listener, String actionCommand) { cmb.addActionListener(listener); cmb.setActionCommand(actionCommand); } }