void write(Environment env,DataOutputStream out,ConstantPool tab) throws IOException {
  out.writeByte(CONSTANT_UTF8);
  out.writeUTF(str);
}

void write ( Environment env , DataOutputStream out , ConstantPool tab ) throws IOException { out . writeByte ( CONSTANT_UTF8 ) ; out . writeUTF ( str ) ; }
write the constant to the output stream
