BufferTest.java

package buffer;

import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.junit.Test;

import java.nio.ByteOrder;

/**
 * @author code4crafter@gmail.com
 */
public class BufferTest {

    @Test
    public void testEndianness() {
        ChannelBuffer buffer;
        int value = 12;

        //ByteOrder.BIG_ENDIAN
        buffer = ChannelBuffers.buffer(ByteOrder.BIG_ENDIAN, 4);
        buffer.writeInt(value);
        for (int i = 0; i < 4; i++) {
            byte b = buffer.readByte();
            System.out.println(b);
        }

        //ByteOrder.LITTLE_ENDIAN
        buffer = ChannelBuffers.buffer(ByteOrder.LITTLE_ENDIAN, 4);
        buffer.writeInt(value);
        for (int i = 0; i < 4; i++) {
            byte b = buffer.readByte();
            System.out.println(b);
        }

        //ByteOrder.nativeOrder()
        buffer = ChannelBuffers.buffer(ByteOrder.nativeOrder(), 4);
        buffer.writeInt(value);
        for (int i = 0; i < 4; i++) {
            byte b = buffer.readByte();
            System.out.println(b);
        }
    }

}