#### Convert a fraction to a DoubleTag(s): String/Number

```import java.math.BigDecimal;
import java.math.MathContext;
import java.text.ParseException;

public class NumberUtils {

private NumberUtils() {}

public static Double fractionToDouble(String fraction)
throws ParseException {
Double d = null;
if (fraction != null) {
if (fraction.contains("/")) {
String[] numbers = fraction.split("/");
if (numbers.length == 2) {
BigDecimal d1 = BigDecimal.valueOf(Double.valueOf(numbers[0]));
BigDecimal d2 = BigDecimal.valueOf(Double.valueOf(numbers[1]));
BigDecimal response = d1.divide(d2, MathContext.DECIMAL128);
d = response.doubleValue();
}
}
else {
d = Double.valueOf(fraction);
}
}
if (d == null) {
throw new ParseException(fraction, 0);
}
return d;
}

public static void main(String[] args) throws Exception{
System.out.println(NumberUtils.fractionToDouble("1/2"));
System.out.println(NumberUtils.fractionToDouble("2/3"));
System.out.println(NumberUtils.fractionToDouble("4/6"));
System.out.println(NumberUtils.fractionToDouble("4/5"));
System.out.println(NumberUtils.fractionToDouble("3/9"));

/*
* 0.5
* 0.6666666666666666
* 0.6666666666666666
* 0.8
* 0.3333333333333333
*/
}
}

```