Java Utililty Methods Float Number Format

List of utility methods to do Float Number Format

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Description

The list of methods to do Float Number Format are organized into topic(s).

Method

StringformatFloat(double num)
format Float 
StringBuffer text = new StringBuffer(Double.toString(num));
int index = text.toString().indexOf(".");
if (index < 0) {
    text.append(".");
    index = text.toString().indexOf(".");
text.append("00");
text.delete(index + 3, text.length());
...
StringformatFloat(double number, int precision)
Returns the specified double, formatted as a string, to n decimal places, as specified by precision. 
String text = Double.toString(number);
if (precision >= text.length()) {
    return text;
int start = text.indexOf(".") + 1;
if (start == 0)
    return text;
if (precision == 0)
...
StringformatFloat(double value, int decimals)
format Float 
String fmt = "%5." + String.valueOf(decimals) + "f";
return String.format(fmt, value);
StringformatFloat(float f)
format Float 
if (f == (int) f)
    return String.format("%d", (int) f);
else
    return String.format("%s", f);
floatformatFloat(float input, int numDecimals)
format Float 
float m = (float) Math.pow(10, numDecimals);
return Math.round(input * m) / m;
StringformatFloat(float num, int width, int precision)
format Float 
return formatReal(String.valueOf(num), width, precision);
StringformatFloat(float val)
format Float 
String retval = Float.toString(val);
return (retval);
FloatformatFloat(String value)
Checks if the value can safely be converted to a float primitive. 
if (value == null) {
    return null;
try {
    return new Float(value);
} catch (NumberFormatException e) {
    return null;