1. Java 8 Read File + Stream TestReadFile.java package com.mkyong.java8; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; import java.util.stream.Stream; public class TestReadFile { public static void main(String args[]) { String fileName = "c://l...
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 ...
= -1) { System.out.print((char) i); // Reads next byte from the file i = input.read(); } input.close(); } catch (Exception e) { e.getStackTrace(); } } } Run Code Output First Line Second Line Third Line Fourth Line Fifth Line In the above example, we have used the ...
try{// create a reader instanceBufferedReader br=newBufferedReader(newFileReader("examplefile.txt"));// read until end of fileString line;while((line=br.readLine())!=null){System.out.println(line);}// close the readerbr.close();}catch(IOException ex){ex.printStackTrace();} readLine()方...
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. ...
public static String readFileByLines(String fileName) { File file = new File(fileName); BufferedReader reader = null; StringBuilder body = new StringBuilder(); try { System.out.println("以行为单位读取文件内容,一次读一整行:"); reader = new BufferedReader(new FileReader(file)); ...
line++; } reader.close(); }catch(IOException e) { e.printStackTrace(); }finally{if(reader !=null) {try{ reader.close(); }catch(IOException e1) { } } } }/** * 随机读取文件内容*/publicstaticvoidreadFileByRandomAccess(String fileName) { ...
The many ways to write data to File using Java. Read more→ 2. Setup 2.1. Input File In most examples throughout this article, we’ll read a text file with filenamefileTest.txtthat contains one line: Hello, world! For a few examples, we’ll use a different file; in these cases, ...
SPI(Service Provider Interface),是JDK内置的一种服务提供发现机制,可以用来启用框架扩展和替换组件,主要是被框架的开发人员使用,比如java.sql.Driver接口,其他不同厂商可以针对同一接口做出不同的实现,MySQL和PostgreSQL都有不同的实现提供给用户,而Java的SPI机制可以为某个接口寻找服务实现。Java中SPI机制主要思想是将...
2.1. Reading a File Line by Line try(BufferedReaderbufferedReader=newBufferedReader(newFileReader("/path/file"))){StringcurrLine;while((currLine=bufferedReader.readLine())!=null){System.out.println(currLine);System.out.println(System.lineSeparator());}}catch(IOExceptione){e.printStackTrace();}...