Here you can find the source of hasJellyBean()
public static final boolean hasJellyBean()
//package com.java2s; /*// w w w . j a v a2 s . com * Copyright (C) 2012 Andrew Neal Licensed under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law * or agreed to in writing, software distributed under the License is * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the specific language * governing permissions and limitations under the License. */ import android.os.Build; public class Main { /** * Used to determine if the device is running Jelly Bean or greater * * @return True if the device is running Jelly Bean or greater, false * otherwise */ public static final boolean hasJellyBean() { return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN; } }