try(BufferedReader br=newBufferedReader(newFileReader(file))){for(String line;(line=br.readLine())!=null;){// process the line.}// line is not visible here.} UPDATE: In Java 8 you can do try(Stream<String>stream=Files.lines(Paths.get(fileName))){stream.forEach(System.out::println)...
PathfilePath=Paths.get("c:/temp","data.txt");List<String>lines=Files.readAllLines(filePath);for(Stringline:lines){System.out.println(line);} 4. Reading a File Line by Line usingFileReader[Legacy] Till Java 7, we could read a file usingFileReaderin various ways. This has been mentioned ...
import java.nio.file.Paths; import java.util.stream.Stream; public class TestReadFile { public static void main(String args[]) { String fileName = "c://lines.txt"; //read file into stream, try-with-resources try (Stream<String> stream = Files.lines(Paths.get(fileName))) { stream.f...
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...
在java的实验作业中,有一个是从我们的txt文件中读取矩阵。其中数与数之间是用\t隔开。行与行之间是用\n跳过。本人java学艺不精,所以我只有自行询问度娘。得知了一个可以从文件中一行一行的读取内容的函数readLn()。并且在读取过程中可以直接把每行的换行符去掉。可谓非常方便(其他盆友如果需要换行符自己加上去即可...
// 引用形式的描述信息:打开文件Filefile=newFile("file.txt");FileReaderfileReader=newFileReader(file);BufferedReaderbufferedReader=newBufferedReader(fileReader); 1. 2. 3. 4. 2. 读取文件内容 // 引用形式的描述信息:读取文件内容Stringline;while((line=bufferedReader.readLine())!=null){// 在这里处理...
BufferedReader的readLine()方法是阻塞式的, 如果到达流末尾, 就返回null, 但如果client的socket末经关闭就销毁, 则会产生IO异常. 正常的方法就是使用socket.close()关闭不需要的socket. 从一个有若干行的文件中依次读取各行,处理后输出,如果用以下方法,则会出现除第一行外行首字符丢失现象 ...
The example reads a text file using aScanner. while (scanner.hasNext()) { String line = scanner.nextLine(); System.out.println(line); } The file is read line by line with thenextLinemethod. Read text file with InputStreamReader
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. ...
importjava.io.IOException;importjava.nio.charset.StandardCharsets;importjava.nio.file.Files;importjava.nio.file.Paths;importjava.util.stream.Stream;publicclassReadFileToString{publicstaticvoidmain(String[]args){String filePath="c:/temp/data.txt";System.out.println(readLineByLineJava8(filePath));}/...