Java RandomAccessFile.read(byte[] b, int off, int len)
Syntax
RandomAccessFile.read(byte[] b, int off, int len) has the following syntax.
public int read(byte[] b, int off, int len) throws IOException
Example
In the following code shows how to use RandomAccessFile.read(byte[] b, int off, int len) method.
/* w ww.ja v a 2s .c o m*/
import java.io.*;
public class Main {
public static void main(String[] args) {
try {
byte[] b1 = {1, 2, 3};
byte[] b2 = {1, 2, 3, 4, 5, 6, 7, 8};
RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");
// write something in the file
raf.writeUTF("Hello World from java2s.com");
// set the file pointer at 0 position
raf.seek(0);
// read 2 bytes, starting from 1
System.out.println(raf.read(b1, 1, 2));
// set the file pointer at 0 position
raf.seek(0);
// read 3 bytes, starting from 4rth
System.out.println(raf.read(b2, 4, 3));
raf.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
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