下列代码中job是怎样提交的呢？

下列代码中job是怎样提交的呢？

public class MaxTemperature{
public static void main(String[]args)throws Exception{ 
if(args.length!=2){
System.err.println("Usage: MaxTemperature <input path> 
<output path>" 
System.exit(-1);
}
Configuration conf=new Configuration();
confset("dfs.defaultFS","hdfs://hadoop:9000");
Job job= Job.getInstance(conf"max temperature") 
job.setJarByClass(MaxTemperature.class) 
job.setJobName("Max temperature");
FilelnputFormat.addInputPath(job,new Path(args[0])); 
FileOutputFormat.setOutputPath(job,new Path(args[1]))
job.setMapperClass(MaxTemperatureMapper.class); job.setReducerClass(MaxTemperatureReducer.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(IntWritable.class);
System.exit(jobwaitForCompletion(true)?0:1);
}