Java Utililty Methods Decimal

String decimalAlign(int width, int precision, String s)
Formats a String representation of a decimal number to a stated precision and total width.

String fraction = "";
String whole = "0.";
int dot = s.lastIndexOf('.');
if (dot >= 0) {
 whole = s.substring(0, dot + 1);
 fraction = s.substring(dot + 1);
if (fraction.length() > precision) {
...

int decimalDigit(final long value, final int i)
Return a particular digit value from a given number

int result = (int) (Math.abs(value) % Math.pow(10, i));
if (i > 1) {
 result /= Math.pow(10, i - 1);
return result;

int decimalDigitCount(int num)
decimal Digit Count

if (num < 10)
 return 1;
if (num < 100)
 return 2;
if (num < 1000)
 return 3;
if (num < 10000)
 return 4;
...

String decimalDump(final byte[] bytes)
Dumps the byte array into a string as a series of 8bit decimal numbers

StringBuffer buffer = new StringBuffer();
for (byte b : bytes) {
 buffer.append(Byte.toString((byte) (b & SINGLE_BYTE_SIGN_MASK)));
 buffer.append(" ");
return buffer.toString();

float decimalPart(float f)
Returns the decimal part of a float, regardless of its sign.

return f - (int) f;

float decimalPart(float number)
decimal Part

int integerPart = (int) number;
return number - integerPart;

float decimalPlace(float theValue, int theDecimalPlaces)
decimal Place

final float myDecimalPlaceClamp = (float) Math.pow(10, theDecimalPlaces);
return ((int) (theValue * myDecimalPlaceClamp)) / myDecimalPlaceClamp;

double decimalPlaces(double value, int precision)
decimal Places

return (double) Math.round(value * Math.pow(10.0D, (double) precision))
 / Math.pow(10.0D, (double) precision);

double decimalPlaces(double value, int precision)
Sets a fixed number of digits after the decimal point.

return (double) Math.round(value * Math.pow(10, precision)) / Math.pow(10, precision);

double decimalRound(double value, int roundPlaces)
decimal Round

int temp = (int) ((value * Math.pow(10, roundPlaces)));
return (((double) temp) / Math.pow(10, roundPlaces));