4. Reading a File Line by Line usingFileReader[Legacy] Till Java 7, we could read a file usingFileReaderin various ways. This has been mentioned for reference only, and shall not be used in Java 8 or later, as it provides no additional benefit for this usecase. Filefile=newFile("c:/...
try(BufferedReader br=newBufferedReader(newFileReader(file))){String line;while((line=br.readLine())!=null){// process the line.}} You can read the data faster if you assume there is no character encoding. e.g. ASCII-7 but it won't make much difference. It is highly likely that wh...
from:http://www.mkyong.com/java8/java-8-stream-read-a-file-line-by-line/ In Java 8, you can useFiles.linesto read file asStream. c://lines.txt – A simple text file for testing line1 line2 line3 line4 line5 Copy 1. Java 8 Read File + Stream TestReadFile.java packagecom.mkyo...
ReadFileLineByLineUsingScanner.java packagecom.journaldev.readfileslinebyline;importjava.io.File;importjava.io.FileNotFoundException;importjava.util.Scanner;publicclassReadFileLineByLineUsingScanner{publicstaticvoidmain(String[]args){try{Scannerscanner=newScanner(newFile("sample.txt"));while(scanner.hasNe...
private static final String readTextByLine(Context context, int resId) { StringBuilder body = new StringBuilder(); InputStream is = null; InputStreamReader isr = null; BufferedReader br = null; try { //resId写在openRawResource();的参数列表 ...
import java.io.IOException;import java.nio.file.Files;import java.nio.file.Paths;// somewhere in your codeString content =new String(Files.readAllBytes(Paths.get(fileName))); To read a text file line by line into aListof typeStringstructure you can use the following example. ...
1. Read File Line by Line using BufferedReader In this example, we have a text file named samplefile.txt, and we will read contents of this file, line by line, using BufferedReader class. samplefile.txt This is first line. This is second line. ...
本文翻译自How to read a file line by line in Java 有时我们想逐行读取一个文件来处理内容。 一个很好的例子是逐行读取CSV文件,然后将其用逗号(,)分成多列。 在Java中,当您需要逐行读取文件时,有多种选项可供选择。 1.Scanner Scanner类提供了用Java逐行读取文件的最简单方法。 我们可以使用Scanner类打开文...
void testReadFile1() throws IOException { //文件内容：Hello World|Hello Zimug String fileName = "D:\\data\\test\\newFile4.txt";try (Scanner sc = new Scanner(new FileReader(fileName))) { while (sc.hasNextLine()) { //按行读取字符串 String line = sc.nextLine();System.out.println...
read()方法:从输入流中读取数据的下一个字节。返回0~255之间的int值、 read(byte[] b)方法 :从输入流中读取一定的字节长度,并以整数的形式返回字节数 mark(int readlimit)方法 :做标记 reset()方法:返回标记位 close()方法:关闭资源 复制一张图片F:\java_Demo\day9_28\1.BMP到F:\java_Demo\day9_28...