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Testing for end of file while reading a byte at a time

import java.io.BufferedInputStream; import java.io.DataInputStream; import java.io.FileInputStream; import java.io.IOException; public class MainClass {   public static void main(String[] args) throws IOException {     DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(         "test.java")));     while (in.available() != 0)       System.out.print((char) in.readByte());   } }