2.FileInputStream源码分析 1packagejava.io;23importjava.nio.channels.FileChannel;4importsun.nio.ch.FileChannelImpl;567publicclassFileInputStreamextendsInputStream8{9//代表磁盘上存在的文件描述10privatefinalFileDescriptor fd;11//java nio中的类,代表通道12privateFileChannel channel =null;13//关闭流操作时,需...
FileInputStream是InputStream的一个子类,实现了对文件的读。 A FileInputStream obtains input bytes from a file in a file system. What files are available depends on the host environment. FileInputStream is meant for reading streams of raw bytes such as image data. For reading streams of characte...
private volatile boolean closed = false;//FileInputStream文件流的关闭状态 1. 2. 3. 4. 5. 2)构造方法源码 public FileInputStream(String name) throws FileNotFoundException { this(name != null ? new File(name) : null); } public FileInputStream(File file) throws FileNotFoundException { Str...
These exceptions are subclasses of IOException. One way to deal with all of them is to enclose all input and output statements in a try-catch block that catches IOException objects. Call the exception’s toString() or getMessage() methods in the catch block to find out more about the probl...
Otherwise, it is implementation specific how the resource cleanup described in close() is performed. Since: 1.0 See Also: File FileDescriptor FileInputStream Files.newOutputStream(java.nio.file.Path, java.nio.file.OpenOption...) Constructor Summary Constructors Constructor Description FileOutputStream(...
FileInputStreamis meant for reading streams of raw bytes such as image data. For reading streams of characters, consider usingFileReader. Since: JDK1.0 See Also: File,FileDescriptor,FileOutputStream,Files.newInputStream(java.nio.file.Path, java.nio.file.OpenOption...) ...
String theString = IOUtils.toString(inputStream, encoding); 1. 2. 另外,如果你不想混合你的Streams和Writer,你可以使用ByteArrayOutputStream 总结其他答案,我找到了11个主要方法来做到这一点(见下文)。我写了一些性能测试(见下面的结果): 将InputStream转换为字符串的方法: ...
Java InputStream JMH 1. Overview There are occasions when we have to compress files to pack multiple files into a single archive for convenient transfer and saving space. For this use case,Zip is a widely used archive file format in compression. ...
InputStreamReaderis a bridge from byte streams to character streams. It reads bytes and decodes them into characters using a specified charset. Main.java import java.io.BufferedReader; import java.io.FileInputStream; import java.io.IOException; ...
packagecom.journaldev.readfileslinebyline;importjava.io.File;importjava.io.FileNotFoundException;importjava.util.Scanner;publicclassReadFileLineByLineUsingScanner{publicstaticvoidmain(String[]args){try{Scannerscanner=newScanner(newFile("sample.txt"));while(scanner.hasNextLine()){System.out.println(scann...