WebSocket中接收者中关于class的相关代码是什么呀？

WebSocket中接收者中关于class的相关代码如下：

class KafkaCon{blic static void main(String[] args) throws Exception{ Properties props = new Properties();
props.setProperty("bootstrap.servers","localhost:9092");
props.setProperty("group.id",“test");
props.setProperty("enable.aute.commit","true");
props.setProperty("auto.commit.interval.ms","1000");
props.setProperty("key.deserializer","org.apache.kafka.common.serialization.StringDeserial");
props.setProperty("value.deserializer","org.apache.kafka.common.serialization.StringDeser"); 
KafkConsumer<String,String>consumer=new KafkaConsumer<~>(props);
consumer.subscribe(Arrays.asList("test"));