Here you can find the source of toBigInteger(String s)
public static BigInteger toBigInteger(String s)
//package com.java2s; /*//from ww w .j a v a 2s .co m * Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. * A copy of the License is located at * * http://aws.amazon.com/apache2.0 * * or in the "license" file accompanying this file. This file 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.math.BigInteger; public class Main { public static BigInteger toBigInteger(String s) { return new BigInteger(s); } }