importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;publicclassReadSpecificLineFromFile{publicstaticvoidmain(String[]args){StringfilePath="example.txt";inttargetLine=3;try(BufferedReaderbr=newBufferedReader(newFileReader(filePath))){Stringline=null;for(inti=1;i<targetLine;i...
importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;publicclassReadSpecificLinesFromFile{publicstaticvoidmain(String[]args){StringfilePath="test.txt";intstartLine=2;// 起始行intendLine=4;// 结束行intcurrentLine=0;try(BufferedReaderbr=newBufferedReader(newFileReader(filePath...
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();} ...
reader=newInputStreamReader(newFileInputStream(fileName));//读入多个字符到字符数组中,charread为一次读取字符数while((charread = reader.read(tempchars)) != -1) {//同样屏蔽掉\r不显示if((charread ==tempchars.length)&& (tempchars[tempchars.length - 1] != '\r')) { System.out.print(temp...
String currentLine = reader.readLine(); reader.close(); assertEquals(expected_value, currentLine); } Note that readLine() will return null when the end of the file is reached. 3. Read with Scanner Next, let’s use a Scanner to read from the File – the file contains: 1 Hello world ...
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 ...
Read File to String using BufferedReader [< Java 7] 使用BufferedReader 读取文件,最老的方式 If you are still not using java 7 or later, then useBufferedReaderclass. It’sreadLine()method reads the file one line at a time and return the content. ...
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...
Additional Unicode line terminators may be recognized in future releases. Note that this method is intended for simple cases where it is convenient to read all lines in a single operation. It is not intended for reading in large files.