regex - "IllegalFormatConversionException: d != java.lang.String" when padding number with 0s? -


i had working code yesterday, in exact form of:

int lastrecord = 1; string key = string.format("%08d", integer.tostring(lastrecord));

which pad nicely 00000001.

now kicked notch twokeychar getting string table , lastrecord getting int table.

as can see concept same - convert int string , try pad 0s; however, time following error:

java.util.illegalformatconversionexception: d != java.lang.string

the code below:

string newpk = null; string twocharkey = gettwocharkey(tablename); if (twocharkey != null) {      int lastrecord = getlastrecord(tablename);      lastrecord++;      //the println below outputs correct values: "ru" , 11.       system.out.println("twocharkey:"+twocharkey+"record:"+lastrecord+"<");      //now make ru00000011      newpk = string.format("%08d", integer.tostring(lastrecord));      newpk = twocharkey.concat(newpk); }

i feel must have typed wrong, because there no reason break since last time when worked. help/hint appreciated! thank you!

you don't need integer.tostring():

 newpk = string.format("%08d", lastrecord);

string.format() conversion , padding.


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