Java读取txt文件，计算2011年9月份的通话时间

public class test2 {  
      
/**  
* @param args  
* @throws IOException   
    */ 
    public static void main(String[] args) throws IOException {  
        // TODO Auto-generated method stub  
        File file = new File("C:\Users\Administrator\Desktop\a.txt");  
        FileInputStream inStream =new FileInputStream(file);  
        BufferedReader in = new BufferedReader(new FileReader(file));  
        int call=0,i=0;  
        String line=null;  
        while((line=in.readLine())!=null ){  
            //System.out.println(line);  
            int a=Integer.decode(line);  
            System.out.println(a+"秒");  
            call+=a;  
            i++;  
        }  
        while(inStream.read()!=-1){  
            //System.out.println(inStream.toString());  
            //call+=inStream.read();  
        }  
        int hour=call/3600;  
        int minute=(call%3600)/60;  
        int second=(call%60);  
        System.out.println(call+"秒");  
        System.out.println("共有"+i+"条记录，通话时间："+hour+"小时"+minute+"分钟"+second+"秒");  
        System.out.print(hour*3600+minute*60+second+"秒");  
    }  
}  

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