Java java.nio.ByteOrder用法及代碼示例

// Java Program to demonstrate ByteOrder Class 
  
// Importing input output and utility classes 
import java.io.*; 
  
// Importing required classes from java.nio package 
// for network linking 
import java.nio.ByteBuffer; 
import java.nio.ByteOrder; 
import java.nio.IntBuffer; 
  
// Main class 
public class GFG { 
  
    // Main driver method 
    public static void main(String[] args) throws Exception 
    { 
  
        // Here object is created and allocated and 
        // it with 8 bytes of memory 
        ByteBuffer buf = ByteBuffer.allocate(8); 
  
        // This line of code prints the os order 
        System.out.println("OS Order         :- "
                           + ByteOrder.nativeOrder()); 
  
        // This line of code prints the ByteBuffer order 
        // Saying that whether it is in BIG_ENDIAN or 
        // LITTLE_ENDIAN 
        System.out.println("ByteBuffer Order :- "
                           + buf.order()); 
  
        // Here the conversion of int to byte takes place 
        buf.put(new byte[] { 13, 17, 21, 25 }); 
  
        // Setting the bit set to its complement using 
        // flip() method of Java BitSet class 
        buf.flip(); 
  
        IntBuffer integerbuffer = buf.asIntBuffer(); 
  
        System.out.println("{" + integerbuffer.position() 
                           + " : " + integerbuffer.get() 
                           + "}"); 
  
        integerbuffer.flip(); 
  
        buf.order(ByteOrder.LITTLE_ENDIAN); 
  
        integerbuffer = buf.asIntBuffer(); 
  
        System.out.println("{" + integerbuffer.position() 
                           + " : " + integerbuffer.get() 
                           + "}"); 
    } 
}