java读取按行txt文件
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2022-10-03 11:05:38
import java.io.BufferedReader; import java.io.FileInputStream; import java.io.InputStreamReader; public class T { public static void main(String[] arg... ......
import java.io.BufferedReader; import java.io.FileInputStream; import java.io.InputStreamReader; public class T { public static void main(String[] args) throws Exception{ long startTime=System.currentTimeMillis(); //获取开始时间 FileInputStream filestream=new FileInputStream("src/jedis/1.txt"); byte[] b = new byte[3]; filestream.read(b); String ecode="gbk"; if (b[0] == -17 && b[1] == -69 && b[2] == -65){ ecode="utf-8"; } InputStreamReader readStream=new InputStreamReader(filestream,ecode); BufferedReader reader=new BufferedReader(readStream); String temp=null; int line=0;//行号 while((temp=reader.readLine())!=null){ line++; System.out.println(line+":"+temp); } long endTime=System.currentTimeMillis(); //获取结束时间 if(readStream!=null){ readStream.close(); } if(reader!=null){ reader.close(); } System.out.println("程序运行时间: "+(endTime-startTime)/1000+"s"); } }
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