Java tutorial
//package com.java2s; import java.math.BigDecimal; public class Main { /** * * @param value * @return */ public static String expToDecimal(String value) { return BigDecimal.valueOf(Double.valueOf(value)).toPlainString(); } /** * * @param value * @return */ public static String expToDecimal(double value) { return BigDecimal.valueOf(value).toPlainString(); } }