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://lines.txt"; //read file into stream, try-with-resources try (Stream<String> stream = Files.lines(Paths....
Filefile=newFile("c:/temp/data.txt");try(FileReaderfr=newFileReader(file);BufferedReaderbr=newBufferedReader(fr);){Stringline;while((line=br.readLine())!=null){System.out.println(line);}}catch(IOExceptione){e.printStackTrace();} 5. GuavaFiles.readLines() One of the simplest solutions is...
下面是一个示例: importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;publicclassReadFileLineByLine{publicstaticvoidmain(String[]args){StringfilePath="path/to/your/file.txt";try(BufferedReaderreader=newBufferedReader(newFileReader(filePath))){Stringline;while((line=reader.re...
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. This is third line. Welcome to www.tut...
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...
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) { ...
默认情况,替换原有内容: new FileWriter(file); 保留原来的文件内容: new FileWriter(file,true) 1. 2. 3. 具体例子如下: public static void writeInFileByfb() { File f=new File("E:\\Java\\jmoa\\TestDiff\\src\\test\\resource\\test_fb.txt"); ...
因为csv本质上是一个文本文件,所以可以使用File中的reader方法读取数据; 读取代码如下: 代码语言:java AI代码解释 publicstaticvoidreadFileByLine(Stringfilepath)throwsException{BufferedReaderreader=newBufferedReader(newFileReader(filepath));Stringline=null;if((line=reader.readLine())!=null){System.out.println...
In Python, we read file line by line using different approaches based on clean syntax, ability to read large files, and memory efficiency.
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...