java io charconversionexception

FileFile can create new, delete, rename files and directories, but cannot view file contents.Construction methodpublic File（string pathName）;//以path路径创建对象publicFile(StringString child);//以parent为父路径，child为子路径创建File对象Unix under Path delimiter is '/', Windows is ' \ ' or '/'A program that understands the file class//create path plus file in D driveFile d1= New File ("D:/dir1");//Create D1 path if(!d1.exists()) {D1.mkdir ();//If the D1 path does not exist, create the path} file D2 = new

BufferedReader (rdfile); Creates a BufferedReader object String strLine; while NULL ) { System.out.println (strLine);} Brdfile.close (); Example, rdfile this FileReader object wrapped in BufferedReader object brdfile, directly manipulate the Brdfile object, you can implement the buffering function of the read operation.Similarly, read by byte can use the Bufferedinputstream class to wrap the Inputsteam.4. I/O architectureNow that we've learned about

Io (input and output) operations in java (IV), iooutputThe main operations of java io have been completed.This section describes other content about java io.Serializable serialization Instance 1: Object serialization Copy codeThe Code is as follows:Import

when should I use IO , when to use NIO it? In this article, I'll try to clearly parse the differences between Java NIO and IO , their usage scenarios. And how they affect your code design. Java NIO and the IO The main differenceThe following table summarizes

Io (input and output) operations in java (3), iooutputTo be honest, I don't really like the Java language. Although it is very powerful, there are many ready-made APIs that can be called.But I always feel that it makes simple things too complicated and sometimes gets lost.I cannot tell whether it is for writing or for the language itself.The first programming lan

Java learning notes 43 (brief introduction to the print stream and IO stream tools) and learning notes Print stream: There are two classes: PrintStream and PrintWriter. The methods of the two classes are the same. The difference is that the constructor PrintStream: constructor: receives the File type, receives the string File name, and receives the byte output stream (OutputStream) PringWriter: constructor:

1 Java IO Tutorials 2 Java IO Overview 3 Java IO: File 4 Java IO: Pipelines

transmitting data4 classes are abstract classes can not be instantiated, need to pass 4 abstract classes provided by the method to implementV. InputStream Architecture 5.1, byte input stream base classFileInputStream: Reading data from a fileStringBufferInputStream: Rotate the string into the input stream, this class is obsolete and replaced by StringbufferreaderPipedInputStream: Connecting a PipedOutputStream It is a pipeline to the inflowBytearrayinputstream: The byte array is rotated as an i

Conclusion 1: General Usage principles of Java IO: 1. Classification by data source (destination: 1. File: fileinputstream, fileoutputstream, filereader, filewriter 2. byte []: bytearrayinputstream, bytearrayoutputstream 3. Char []: chararrayreader, chararraywriter 4. String: stringbufferinputstream, stringreader, stringwriter 5. network data streams: inputstream, outputstream, reader, and writer Ii. forma

Reprint Please specify the Source: Jiq ' s technical BlogIntroductionNIO, or new IO, was introduced in JDK1.4 to improve IO speed. It is important to note that Javanio is not completely non-blocking IO (no-blocking io) because some of these channels (such as FileChannel) can only be run in blocking mode, while other ch