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  1. JDK
  2. JDK-6196991

(cs) Many character decoders fail to convert single-byte (e.g. ASCII) input

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    • b29
    • x86
    • linux, windows_xp

        FULL PRODUCT VERSION :
        java version "1.4.2_01"
        Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_01-b06)
        Java HotSpot(TM) Client VM (build 1.4.2_01-b06, mixed mode)

        ADDITIONAL OS VERSION INFORMATION :
        Microsoft Windows XP [Version 5.1.2600]

        EXTRA RELEVANT SYSTEM CONFIGURATION :
        Using English version of Windows.
        Default locale is "en"


        A DESCRIPTION OF THE PROBLEM :
        Enclosed program does round-trip conversion of a string from default encoding to SJIS, and then back. When "ABC" is processed it correctly comes back as "ABC". When a single character string is processed, it comes back as an empty string.



        STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
        Run provided Java program

        EXPECTED VERSUS ACTUAL BEHAVIOR :
        EXPECTED -
        Printed output should be:

        roundTrip(A)=A
        roundTrip(ABC)=ABC
        ACTUAL -
        Actual output is:

        roundTrip(A)=
        roundTrip(ABC)=ABC

        REPRODUCIBILITY :
        This bug can be reproduced always.

        ---------- BEGIN SOURCE ----------
        package gcr.db.test;

        import java.nio.*;
        import java.nio.charset.*;

        /**
         * Demonstrates apparent bug in SJIS encoding.
         */
        public class SjisBug {
          public static void main(String[] args) {
            System.out.println("roundTrip(A)="+roundTrip("A")); // Gets empty string !
            System.out.println("roundTrip(ABC)="+roundTrip("ABC")); // Gets ABC, as expected.
          }
          static String roundTrip(String str) {
            Charset cs=Charset.forName("SJIS");
            return cs.decode(cs.encode(str)).toString();
          }
        }



        ---------- END SOURCE ----------
        ###@###.### 2004-11-18 04:18:09 GMT

              martin Martin Buchholz
              ndcosta Nelson Dcosta (Inactive)
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                Created:
                Updated:
                Resolved:
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