quickfix.field.converter.IntConverter Maven / Gradle / Ivy
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package quickfix.field.converter;
import quickfix.FieldConvertError;
/**
* Convert between an integer and a String
*/
public final class IntConverter {
/**
* Convert and integer to a String
*
* @param i the integer to convert
* @return the String representing the integer
* @see java.lang.Long#toString(long)
*/
public static String convert(int i) {
return Long.toString(i);
}
/**
* Convert a String to an integer.
*
* @param value the String to convert
* @return the converted integer
* @throws FieldConvertError raised if the String does not represent a valid integer
* @see java.lang.Integer#parseInt(String)
*/
public static int convert(String value) throws FieldConvertError {
try {
for (int i = 0; i < value.length(); i++) {
if (!Character.isDigit(value.charAt(i)) && !(i == 0 && value.charAt(i) == '-')) {
throw new FieldConvertError("invalid integral value: " + value);
}
}
return Integer.parseInt(value);
} catch (NumberFormatException e) {
throw new FieldConvertError("invalid integral value: " + value + ": " + e);
}
}
}