force string made from integer to be n-digit

[Thomas Jollans]

Is there a function (or way) to make 1 (an int) to "01", 16 to "16", 3
to "03"...? I will also need to do this with 4-digit numbers.

thomas

 

[Christophe Vanfleteren]

Is there a function (or way) to make 1 (an int) to "01", 16 to "16", 3
to "03"...? I will also need to do this with 4-digit numbers.

thomas

Something like:

int REQUIRED_LENGTH = 4;

String s = String.valueOf("5");
int sizeDiff = REQUIRED_LENGTH - s.size();

StringBuffer prefix = new StringBuffer();
for(int i = 0;i<sizeDiff;i++){
prefix.append("0");
}
prefix.append(s);

s = prefix.toString;


should work.

 

[Carl Howells]

Is there a function (or way) to make 1 (an int) to "01", 16 to "16", 3
to "03"...? I will also need to do this with 4-digit numbers.

thomas

Take a look at java.text.DecimalFormat.