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How do you left pad an int with zeros when converting to a String in java?
I'm basically looking to pad out integers up to 9999 with leading zeros (e.g. 1 = 0001).
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leftPad() method to left pad a string with zeros, by adding leading zeros to string.
To pad an integer with leading zeros to a specific length To display the integer as a decimal value, call its ToString(String) method, and pass the string "Dn" as the value of the format parameter, where n represents the minimum length of the string.
To pad zeros to a string, use the str. zfill() method. It takes one argument: the final length of the string you want and pads the string with zeros to the left.
Zero padding is a technique typically employed to make the size of the input sequence equal to a power of two. In zero padding, you add zeros to the end of the input sequence so that the total number of samples is equal to the next higher power of two.
Use java.lang.String.format(String,Object...) like this:
String.format("%05d", yournumber); for zero-padding with a length of 5. For hexadecimal output replace the d with an x as in "%05x".
The full formatting options are documented as part of java.util.Formatter.
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