Can we use String.format() to pad/prefix with a character with desired length?

Question

Can java.lang.String.format(String str, String str1) be used for adding prefix of a particular character.

I could do this for a number like:

Answer 1

You can do as below if you really want to use String.format,

String sendID = "AABB";
String.format("%32s", sendID ).replace(' ', '0')

Other than String.format you can find many solutions here.

Edit: Thanks for Brian to point of the issue. The above wont work for input with spaces. You can try as below. But I wont suggest the below operation as it has too many string operation.

String sendID = "AA BB";
String suffix = String.format("%32s", "").replace(' ', '0') + sendID;
sendID = suffix.substring(sendID.length());

You can also try using StringUtils.leftPad

StringUtils.leftPad(sendID, 32 - sendID.length(), '0');