Java Double Number Create toDouble(String val)

Description

to Double

License

Apache License

Declaration

public static Double toDouble(String val) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 * /*from   w ww .ja  v a2  s . co m*/
 *     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.
 ******************************************************************************/

public class Main {
    public static Double toDouble(String val) {
        Double l = 0.0;
        boolean dig = false;
        long len = 10;
        long digs = 0;
        for (char c : val.toCharArray()) {
            if (Character.isDigit(c)) {
                if (dig) {
                    digs = digs * 10 + c - 48;
                    len *= 10;
                } else {
                    l = l * 10 + c - 48;
                }
            } else if (c == '.') {
                dig = true;
            } else {
                break;
            }
        }
        return l + (double) digs * 10 / len;
    }
}

Related

1. toDouble(String str)
2. toDouble(String str, double defaultValue)
3. toDouble(String string)
4. ToDouble(String string)
5. toDouble(String v, double def)
6. toDouble(String value)
7. toDouble(String value)
8. toDouble(String value)
9. toDouble(String value)