src/java.xml/share/classes/com/sun/xml/internal/stream/writers/UTF8OutputStreamWriter.java

*** 87,97 ****
          }
  
          // Otherwise, encode char as defined in UTF-8
          if (c < 0x80) {
              // 1 byte, 7 bits
!             out.write((int) c);
          }
          else if (c < 0x800) {
              // 2 bytes, 11 bits
              out.write(0xC0 | (c >> 6));    // first 5
              out.write(0x80 | (c & 0x3F));  // second 6
--- 87,97 ----
          }
  
          // Otherwise, encode char as defined in UTF-8
          if (c < 0x80) {
              // 1 byte, 7 bits
!             out.write(c);
          }
          else if (c < 0x800) {
              // 2 bytes, 11 bits
              out.write(0xC0 | (c >> 6));    // first 5
              out.write(0x80 | (c & 0x3F));  // second 6