Java PushbackInputStream read() Example
PushbackInputStream class read() method example. This example shows you how to use read() method.
Syntax is : public int read(byte[] b, int off, int len) throws IOException
This method reads up to len bytes of data from this input stream into an array of bytes. This method first reads any pushed-back bytes; after that, if fewer than len bytes have been read then it reads from the underlying input stream. If len is not zero, the method blocks until at least 1 byte of input is available; otherwise, no bytes are read and 0 is returned.
Here is the code.
/**
* @(#) Read1PushbackInputStream.java
* A class representing use of method read() of PushbackInputStream
class in java.io Package.
* @Version 10-June-2008
* @author Rose India Team
*/
import java.io.*;
public class Read1PushbackInputStream {
public static void main(String[] args) throws IOException {
// Declare the buffer and initialize its size:
byte[] arrByte = new byte[1024];
byte[] byteArray = new byte[]{'M', 'A', 'H', 'E', 'N', 'D', 'R', 'A'};
File file = new File("Mahendra.txt");
// Create object of FileOutputStream class for specified file.
FileOutputStream fOutStream = new FileOutputStream(file);
fOutStream.write(byteArray);
// Create object of PushbackInputStream class for specified stream.
InputStream inStream = new FileInputStream(file);
PushbackInputStream pushInStream = new PushbackInputStream(inStream);
System.out.print("Content of the file : ");
// Read from the buffer one character at a time:
int c = 0;
while ((c = pushInStream.read(arrByte, 0, arrByte.length)) >= 0) {
for (int i = 0; i < c; i++) {
// Display the read byte:
System.out.print((char) arrByte[i]);
}
}
}
} |
output of the program.
Content of the file : MAHENDRA
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