i have charset question about kafka

[/kun????????]

i hava test my kafka programe using kafka-console-producer.sh and 
kafka-console-consumer.sh.
 setp1  :
 [oracle@bd02 bin]$ ./kafka-console-producer.sh --broker-list 
133.224.217.175:9092 --topic oggtopic
????????????
 setp2:
 [oracle@bd02 bin]$ ./kafka-console-consumer.sh --zookeeper 
133.224.217.175:2181/kafka --from-beginning --topic oggtopic
 ????????????

 please tell me how to solve 
    
 ths ! 
  
 jason