Here you can find the source of runInBackground(final Callable
public static Void runInBackground(final Callable<Void> callable)
//package com.java2s; /*/* w w w. j a v a2 s . c om*/ * Copyright (c) 2016 Martin Pfeffer * * 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 java.util.concurrent.Callable; public class Main { public static Void runInBackground(final Callable<Void> callable) { new Thread(new Runnable() { public void run() { try { callable.call(); } catch (Exception e) { e.printStackTrace(); } } }).start(); return null; } }