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...
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...
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...
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...
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...
FileReader 用来读取字符文件的便捷类。此类的构造方法假定默认字符编码和默认字节缓冲区大小都是适当的。要自己指定这些值,可以先在 FileInputStream 上构造一个 InputStreamReader。 FileReader 用于读取字符流。要读取原始字节流,请考虑使用 FileIn
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.FileReader; import java.io.IOException; public class FileReaderExample { public ...
Added in 11. Java documentation forjava.io.FileReader.FileReader(java.lang.String, java.nio.charset.Charset). Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons 2.5 Attribution License...