Java FileInputStream read() Example
FileInputStream 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
Method reads up to len bytes of data from this input stream into an array of bytes. If len is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0 is returned.
Here is the code.
/**
* @(#) Read2FileInputStream.java
* A class representing use of method read() of FileInputStream
class in java.io Package.
* @Version 07-June-2008
* @author Rose India Team
*/
import java.io.*;
public class Read2FileInputStream {
public static void main(String[] args) throws IOException {
// Declare the buffer and initialize its size:
byte[] arrByte = new byte[1024];
// create object of File class
File file = new File("Mahendra.txt");
byte[] b;
b = new byte[]{'M','A','H','E','N','D','R','A',' ','S','I','N','G','H'};
FileOutputStream objFileOutStream = new FileOutputStream(file);
objFileOutStream.write(b);
// Create object of FileInputStream class.
FileInputStream objFileInStream = new FileInputStream(file);
System.out.print("Content of the file : ");
// Read from the buffer one character at a time:
int c=0;
while ((c = objFileInStream.read(arrByte, 0, arrByte.length)) >= 0){
for (int i = 0; i < c; i++) {
// Display the read byte:
System.out.print((char)arrByte[i]);
}
}
}
}
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output of the program.
| Content of the file : MAHENDRA SINGH |
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