In the following example, we useFileReader'sreadmethod to read a text file. It reads characters into an array. It will block until some input is available, an I/O error occurs, or the end of the stream is reached. Main.java import java.io.FileReader; import java.io.IOException; import...
下面是一个示例代码: importjava.io.*;publicclassFileReaderExample{publicstaticvoidmain(String[]args){try{FileInputStreamfis=newFileInputStream("example.txt");InputStreamReaderisr=newInputStreamReader(fis,"UTF-8");FileReaderreader=newFileReader(isr);intc;while((c=reader.read())!=-1){System.out.p...
Let us see a few examples of reading a file using theFileReaderin Java. 3.1. Reading a Small Text File inchar[] In the given example, we are reading a text file. The file contains 3 small hello world messages. Here we are attempting to read the file in singleread()operation so make...
The example reads all bytes from a file and passes them to theStringconstructor. Read text with Files.readString Java 11 introduces a convenient method that allows to read the whole file into a string in one shot. TheFiles.readStringreads all content from a file into a string, decoding from...
Java IO是一套Java 用来读写数据（输入和输出）的API，大部分程序都需要处理一些输入，并由输入产生一些输出（PS: 输入和输出是相对CPU而言的，input 就是从外面到CPU，output就是从CPU到外面，CPU是主人公）。java.io 包下有大约80多个类，大概可以分成四组：Java...
importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.InputStreamReader;publicclassFileReaderExample{publicstaticvoidmain(String[]args){StringfilePath="path/to/your/file.txt";Stringencoding="UTF-8";try(BufferedReaderreader=newBufferedReader(newInputStreamReader(newFileReader(filePath),encoding...
import java.io.FileReader; import java.io.IOException; public class FileReaderExample { public ...
packagecom.example.io;importjava.io.File;importjava.io.FileReader;importjava.io.FileWriter;importjava.io.IOException;publicclassNewClass4 {publicstaticvoidmain(String[] args) {chara[] = "今晚10点发动总攻".toCharArray();intn;try{ File file=newFile("d:\\java", "aa.java");for(inti = 0; ...
Java FileReader 类用于从文件中读取数据。它以字节格式返回数据,如FileInputStream类。它是面向字符的类,用于在java中进行文件处理。 publicclassFileReaderextendsInputStreamReader FileReader 类的构造函数 FileReader 类的方法 Java FileReader Example In this example, we are reading the data from the text filetest...
import java.io.FileOutputStream; import java.io.IOException; public classBufferedStreamCopyExample{ ...