- Java.io package classes
- Java.io - Home
- Java.io - BufferedInputStream
- Java.io - BufferedOutputStream
- Java.io - BufferedReader
- Java.io - BufferedWriter
- Java.io - ByteArrayInputStream
- Java.io - ByteArrayOutputStream
- Java.io - CharArrayReader
- Java.io - CharArrayWriter
- Java.io - Console
- Java.io - DataInputStream
- Java.io - DataOutputStream
- Java.io - File
- Java.io - FileDescriptor
- Java.io - FileInputStream
- Java.io - FileOutputStream
- Java.io - FilePermission
- Java.io - FileReader
- Java.io - FileWriter
- Java.io - FilterInputStream
- Java.io - FilterOutputStream
- Java.io - FilterReader
- Java.io - FilterWriter
- Java.io - InputStream
- Java.io - InputStreamReader
- Java.io - LineNumberInputStream
- Java.io - LineNumberReader
- Java.io - ObjectInputStream
- Java.io - ObjectInputStream.GetField
- Java.io - ObjectOutputStream
- io - ObjectOutputStream.PutField
- Java.io - ObjectStreamClass
- Java.io - ObjectStreamField
- Java.io - OutputStream
- Java.io - OutputStreamWriter
- Java.io - PipedInputStream
- Java.io - PipedOutputStream
- Java.io - PipedReader
- Java.io - PipedWriter
- Java.io - PrintStream
- Java.io - PrintWriter
- Java.io - PushbackInputStream
- Java.io - PushbackReader
- Java.io - RandomAccessFile
- Java.io - Reader
- Java.io - SequenceInputStream
- Java.io - SerializablePermission
- Java.io - StreamTokenizer
- Java.io - StringBufferInputStream
- Java.io - StringReader
- Java.io - StringWriter
- Java.io - Writer
- Java.io package extras
- Java.io - Interfaces
- Java.io - Exceptions
- Java.io package Useful Resources
- Java.io - Discussion
Java.io.Reader.read() Method
Description
The java.io.Reader.read() method reads a single character. This method will block until a character is available, an I/O error occurs, or the end of the stream is reached.
Declaration
Following is the declaration for java.io.Reader.read() method.
public int read()
Parameters
NA
Return Value
This method returns the character read, as an integer in the range 0 to 65535 (0x00-0xffff), or -1 if the end of the stream has been reached.
Exception
IOException − If the stream does not support mark(), or if some other I/O error occurs.
Example
The following example shows the usage of java.io.Reader.read() method.
package com.tutorialspoint; import java.io.*; public class ReaderDemo { public static void main(String[] args) { String s = "Hello World"; // create a new StringReader Reader reader = new StringReader(s); try { // read the first five chars for (int i = 0; i < 5; i++) { char c = (char) reader.read(); System.out.print("" + c); } // change line System.out.println(); // close the stream reader.close(); } catch (IOException ex) { ex.printStackTrace(); } } }
Let us compile and run the above program, this will produce the following result −
Hello
java_io_reader.htm
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