Finally, we’ll explore the new techniques to load and read a file in Java 7 and Java 8. This article is part of the“Java – Back to Basic” serieson Baeldung. Further reading: Java - Create a File How to create a File in Java using JDK 6, JDK 7 with NIO or Commons IO. Rea...
Reading a File Line-by-Line usingRandomAccessFile You can useRandomAccessFileto open a file inread modeand then use itsreadLinemethod to read a file line-by-line. Here is an example program to read a file line-by-line withRandomAccessFile: ReadFileLineByLineUsingRandomAccessFile.java packag...
Another option to read text files is to use the Java streaming API. TheFiles.linesreads all lines from a file as a stream. The bytes from the file are decoded into characters using theStandardCharsets.UTF-8charset. Main.java import java.io.IOException; import java.nio.file.Files; import ...
1packagecn.com.qmhd.tools;23importjava.io.FileInputStream;4importjava.io.FileNotFoundException;5importjava.io.FileOutputStream;6importjava.io.IOException;7importjava.util.ArrayList;8importjava.util.HashMap;9importjava.util.List;1011importjavax.servlet.http.HttpServletRequest;1213importorg.apache.poi....
I have placed a file data.txt at location c:/temp. I will read this file in all 3 examples.准备一个文件,文件名为data.txt,放到c:/temp目录下面,然后会用三种方法把文件内容读出来 File content in c:/temp/data.txt文件内容如下 welcome to howtodoinjava.com blog. Learn to grow. ...
File file=newFile(filePath); FileInputStream in=newFileInputStream(file); InputStreamReader read=newInputStreamReader(in,"GBK");//ANSI 可以不转码或者用GBK转码,其他需要相应格式转码BufferedReader buffer=newBufferedReader(read); String lineTxt=""; ...
1、此方法是从输入流中读取一个数据的字节,通俗点讲,即每调用一次read方法,从FileInputStream中读取一个字节。 2、返回下一个数据字节,如果已达到文件末尾,返回-1,这点除看难以理解,通过代码测试理解不难。 3、如果没有输入可用,则此方法将阻塞。这不用多解释,大家在学习的时候,用到的Scannner sc = new Sca...
TheApache Commons-IOhas a package,FileUtils, which can be used to read all the bytes from a file in Java. Make sureApache Commons-IOis added to your Java environment. Here is the maven dependency forApache Commons-IO; add it to yourpom.xml. ...
Let’s embark on a practical journey by exploring a code snippet that showcases the application ofClass.getResourceAsStream(). Assume we have a text file namedsample.txtnestled in a directory namedconfigwithin our project structure. importjava.io.BufferedReader;importjava.io.IOException;importjava...
例如，下面的代码使用 FileInputStream 读取文件，并在读取到文件末尾时停止：try (FileInputStream fis ...