ascii - Java symbol not found when it should be -

here's code:

    for(int i=0; i<plaintextupper.length()-1; i++)     {       system.out.println(charcodeat(i));     }

it won't compile though, because says charcodeat's symbol not found. missing library? 1 have imported right java.util.*

assuming java , not javascript, want this:

for(int i=0; i<plaintextupper.length()-1; i++) {     system.out.println(plaintextupper.codepointat(i)); }

note not process last character of plaintextupper. want either rid of -1 or change comparison operator <= in for termination test.

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