Java Double to String doubleToString(double d)

Description

Produce a string from a double.

License

Apache License

Parameter

Parameter	Description
d	A double.

Return

A String.

Declaration

public static String doubleToString(double d) 

Method Source Code

//package com.java2s;
/*// w  w w  . ja v  a 2s  . co  m
 * Copyright 2002-2009 the original author or authors.
 *
 * 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.
 */

public class Main {
    /**
     * Produce a string from a double. The string "null" will be returned if the
     * number is not finite.
     *
     * @param d A double.
     * @return A String.
     */
    public static String doubleToString(double d) {
        if (Double.isInfinite(d) || Double.isNaN(d)) {
            return "null";
        }

        // Shave off trailing zeros and decimal point, if possible.

        String s = Double.toString(d);
        if (s.indexOf('.') > 0 && s.indexOf('e') < 0 && s.indexOf('E') < 0) {
            while (s.endsWith("0")) {
                s = s.substring(0, s.length() - 1);
            }
            if (s.endsWith(".")) {
                s = s.substring(0, s.length() - 1);
            }
        }
        return s;
    }
}

Related

1. double2String(double[] v)
2. doubleToStr(Double d)
3. doubleToStr(Double valor)
4. doubleToString(double d)
5. doubleToString(double d)
6. doubleToString(double d, int fNumber)
7. doubleToString(double d, int sigDigs)
8. doubleToString(Double doub)
9. doubleToString(double inValue, int precision, boolean useComma)