Putting Bytes into a ByteBuffer : ByteBuffer « File Input Output « Java






  1. Java
  2. File Input Output
  3. ByteBuffer

Putting Bytes into a ByteBuffer

 

import java.nio.ByteBuffer;

public class Main {
  public static void main(String[] argv) throws Exception {
    ByteBuffer bbuf = ByteBuffer.allocate(10);
    int capacity = bbuf.capacity(); // 10
    System.out.println(capacity);
    bbuf.put((byte) 0xFF); 
    bbuf.position(5);
    bbuf.put((byte) 0xFF);
    int pos = bbuf.position(); 
    int rem = bbuf.remaining();
    bbuf.limit(7); 
    bbuf.rewind(); 
  }
}








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4.Create a read-write memory-mapped file
5.Create a private (copy-on-write) memory-mapped file.
6.use FileChannel and ByteBuffer
7.Fast Copy File
8.A ByteBuffer is a fixed-capacity buffer that holds byte values.
9.Create a ByteBuffer using a byte array
10.Create a non-direct ByteBuffer with a 10 byte capacity
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12.Get the ByteBuffer's capacity
13.Use the absolute get().
14.Set the position
15.Use the relative get()
16.Get remaining byte count in a ByteBuffer
17.Set the limit for ByteBuffer
18.This convenience method sets the position to 0
19.Converting Between a ByteBuffer an a Byte Array
20.Retrieve bytes between the position and limit
21.Retrieve all bytes in the buffer
22.Get and Set char type data in a ByteBuffer
23.Get and Set short type data in a ByteBuffer
24.Get and Set int type data in a ByteBuffer
25.Get and Set long type data in a ByteBuffer
26.Get and Set float type data in a ByteBuffer
27.Get and Set double type data in a ByteBuffer
28.Create a character ByteBuffer
29.Create a short ByteBuffer
30.Create an integer ByteBuffer
31.Create a long ByteBuffer
32.Create a float ByteBuffer
33.Create a double ByteBuffer
34.Get a substring
35.Using a ByteBuffer to Store Strings
36.Get default byte ordering
37.Put a multibyte value
38.Set to little endian
39.Determining If a ByteBuffer Is Direct
40.Reading from a Channel with a ByteBuffer
41.Writing and Appending a ByteBuffer to a File
42.Convert interchangeably between a ByteBuffer and a byte array
43.Create a ByteBuffer
44.Put bytes into a ByteBuffer
45.How to get bytes from a ByteBuffer
46.Write with ByteBuffer
47.Applying Regular Expressions on the Contents of a File