1. 创建FileReader对象 首先,你需要导入Java的IO包,并创建一个FileReader对象。这个对象需要指定我们希望读取的文件的路径。 importjava.io.FileReader;// 导入FileReader类importjava.io.IOException;// 导入IOException类publicclassFileReadExample{publicstaticvoidmain(String[]args){FileReaderfileReader=null;try{// 创...
importjava.io.FileReader;importjava.io.BufferedReader;importjava.io.IOException;publicclassFileReadExample{publicstaticvoidmain(String[]args){// 文件路径传值StringfilePath="example.txt";try(FileReaderfr=newFileReader(filePath);BufferedReaderbr=newBufferedReader(fr)){Stringline;while((line=br.readLine()...
importjava.io.*;publicclassFileRead{publicstaticvoidmain(Stringargs[])throwsIOException{Filefile=newFile("Hello1.txt");//创建文件file.createNewFile();//creates a FileWriter ObjectFileWriterwriter=newFileWriter(file);//向文件写入内容writer.write("This\nis\nan\nexample\n");writer.flush();writer.cl...
我们可以编写一些简单的测试用例,测试FileReader类的基本功能。 代码语言:java AI代码解释 packagecom.example.javase.io;importorg.junit.After;importorg.junit.Assert;importorg.junit.Before;importorg.junit.Test;importorg.springframework.boot.test.context.SpringBootTest;importjava.io.FileReader;importjava.io.IO...
import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; public class FileReaderExample { public static void main(String[] args) { FileReader fileReader = null; BufferedReader bufferedReader = null; try { // 1. 创建FileReader对象 fileReader = new FileReader("path/to...
import java.io.FileReader;import java.io.IOException;public class FileReaderExample {public static void main(String[] args) {try {FileReader reader = new FileReader("example.txt");char[] buffer = new char[1024];int length = reader.read(buffer);System.out.println(new String(buffer, 0, length...
import java.io.FileReader; import java.io.IOException; public class FileReaderExample { public static void main(String[] args) { FileReader reader = null; try { reader = new FileReader("path/to/file.txt"); char[] buffer = new char[1024]; int length; while ((length = reader.read(buffer...
importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;publicclassFileReaderExample{publicstaticvoidmain(String[]args)throwsIOException{StringfileName="demo.txt";BufferedReaderbr=newBufferedReader(newFileReader(fileName));try{Stringline;while((line=br.readLine())!=null){System.out...
Java BufferedReader 类构造函数 methods: eg: import java.io.*; public class BufferedReaderExample { public static void main(String args[])throws Exception{ FileReader fr=new FileReader("D:\\testout.txt"); BufferedReader br=new BufferedReader(fr); ...
importjava.io.FileReader;importjava.io.BufferedReader;importjava.io.IOException;publicclassFileReaderExample{publicstaticvoidmain(String[]args){// 定义相对路径StringfilePath="src/data/sample.txt";// 使用FileReader读取文件try(FileReaderfileReader=newFileReader(filePath);BufferedReaderbufferedReader=newBuffered...