Java IO Tutorial - Java DataInputStream.read(byte[] b, int off, int len)

Syntax

DataInputStream.read(byte[] b, int off, int len) has the following syntax.

public final int read(byte[] b, int off, int len)  throws IOException

Example

In the following code shows how to use DataInputStream.read(byte[] b, int off, int len) method.

import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
//from  w  w w.jav  a2s. c  om
public class Main {
  public static void main(String[] args) throws IOException {

    InputStream is = new FileInputStream("c:\\test.txt");

    DataInputStream dis = new DataInputStream(is);

    int count = is.available();

    byte[] bs = new byte[count];

    dis.read(bs, 4, 3);

    for (byte b : bs) {
      char c = (char) b;

      if (b == 0){
        c = '0';
      }  
      System.out.print(c);
    }
  }
}