Formatting a String to Remove Scientific Notation - Java

bigdecimal, floating-point, java, string

Solution

Below is your code slightly modified. As per me this works well and doesn't actually cares he order of the exponents:

public void function() {
    String value = "123456.0023 -3.04567E-8 -3.01967E-20";
    String[] tabOfFloatString = value.split(" ");
    int length = tabOfFloatString.length;
    System.out.println("Length of float string is" + length);
    float[] floatsArray = new float[length];
    for (int l = 0; l < length; l++) {
        String res = new BigDecimal(tabOfFloatString[l]).toPlainString();
        System.out.println("Float is " + res);
        floatsArray[l] = Float.parseFloat(res);
    }

}

Problem

I have the following code which splits a string of numbers (separated by a space) and then creates an array of floats : ``` //Split the string and then build a float array with the values. String[] tabOfFloatString = value.split(" "); int length = tabOfFloatString.length; System.out.println("Length of float string is" + length); float[] floatsArray = new float[length]; for (int l=0; l<length; l++) { float res = Float.parseFloat(tabOfFloatString[l]); System.out.println("Float is " + res); floatsArray[l]=res; } ``` The problem is that some of the values in the string are formatted with scientific notation - e.g they read -3.04567E-8. What I want to do is end up with a float which does not contain the E number. I have been reading this thread which suggests that I could use BigDecimal, however am unable to get this to work - is this the best approach or should I try something else ? How to convert a string 3.0103E-7 to 0.00000030103 in Java?

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