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SYNOPSIS
--------
Invalid conversion for PUA on x-windows-50220 and x-windows-50221

OPERATING SYSTEM(S)
-------------------
Windows 7 x64 (Japanese)

FULL JDK VERSION(S)
-------------------
java version "9-ea"
Java(TM) SE Runtime Environment (build 9-ea+131)
Java HotSpot(TM) 64-Bit Server VM (build 9-ea+131, mixed mode)

java version "1.8.0_102"
Java(TM) SE Runtime Environment (build 1.8.0_102-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.102-b14, mixed mode)

PROBLEM DESCRIPTION
-------------------
Java's x-windows-50220 and x-windows-50221 converter don't follow
Windows' 50220 and 50221 specification on UDC/PUA

Java: 1B244275211B2842
Windows: 1B24427F211B2842

DBCS part should be 7F21 instead of 7521


TESTCASE
--------

c2b.java
====================================================
public class c2b {
  public static void main(String[] args) throws Exception {
    int i = Integer.parseInt(args[1], 16);
    char[] ca = Character.toChars(i);
    System.out.print(Character.isDefined(i) ? " " : "*");
    for(char c : ca) System.out.printf("\\u%04X",(int)c);
    System.out.print(" -> ");
    for(byte b : (new String(ca)).getBytes(args[0])) System.out.printf("\\x%02X",(int)b&0xFF);
    System.out.println();
  }
}
====================================================

c2b_1.ps1
====================================================
param($code, $hex)
$enc_r = [Text.Encoding]::GetEncoding([int]$code)
[char[]]$ca = @()
$ca += ([System.Convert]::ToInt32([string]$hex, 16))
$s = ""
$enc_r.GetBytes($ca) | foreach {$s += [System.Convert]::ToInt32($_).ToString("X2")}
$s
====================================================



REPRODUCTION INSTRUCTIONS
-------------------------

>jdk9\jdk-9\bin\java c2b x-windows-50220 E000
\uE000 -> \x1B\x24\x42\x75\x21\x1B\x28\x42

>jdk8_102\jdk1.8.0_102\jre\bin\java c2b x-windows-50220 E000
\uE000 -> \x1B\x24\x42\x75\x21\x1B\x28\x42

>powershell -NoProfile -ExecutionPolicy Unrestricted .\c2b_1.ps1 50220 E000
1B24427F211B2842

>jdk9\jdk-9\bin\java c2b x-windows-50221 E000
\uE000 -> \x1B\x24\x42\x75\x21\x1B\x28\x42

>jdk8_102\jdk1.8.0_102\jre\bin\java c2b x-windows-50221 E000
\uE000 -> \x1B\x24\x42\x75\x21\x1B\x28\x42

>powershell -NoProfile -ExecutionPolicy Unrestricted .\c2b_1.ps1 50221 E000
1B24427F211B2842

WORKAROUND
----------
Unknown

SUGGESTED FIX
-------------
N/A
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