import java.nio.*;
import java.util.*;

public class BufferTest5 {
    public BufferTest5(){
        ByteBuffer buffer = ByteBuffer.allocate(15);
        
        ByteBufferUtility.initByteBuffer(buffer);
        ByteBufferUtility.printByteBuffer(buffer);

        // int の読み込み
        System.out.println("\nBuffer getInt()");
        int x = buffer.getInt();
        System.out.println("return value = " + x + " : 0x" + Integer.toHexString(x));
        ByteBufferUtility.printByteBuffer(buffer);

        // int の書き出し
        x = 10;
        System.out.println("\nBuffer putInt(int value) value = " + x + " : 0x" + Integer.toHexString(x));
        buffer.putInt(x);
        ByteBufferUtility.printByteBuffer(buffer);

        // IntBuffer への変換
        System.out.println("\nIntBuffer へ変換");

        IntBuffer intBuffer = buffer.asIntBuffer();

        System.out.println(intBuffer);
        System.out.println("Last index value = 0x" + Integer.toHexString(intBuffer.get(intBuffer.limit() - 1)));

        // Endian の変換
        System.out.print("\nEndian の変換: " + buffer.order());

        buffer.order(ByteOrder.LITTLE_ENDIAN);
        System.out.println(" -> " + buffer.order());
        buffer.position(0);
        ByteBufferUtility.printByteBuffer(buffer);

        System.out.println("\nBuffer getInt()");
        x = buffer.getInt();
        System.out.println("return value = " + x + " : 0x" + Integer.toHexString(x));
        ByteBufferUtility.printByteBuffer(buffer);
    }

    private String bytesToString(byte[] bytes){
        StringBuffer strBuffer = new StringBuffer("[");
        int i;
        for(i = 0 ; i < bytes.length - 1 ; i++){
            strBuffer.append(Integer.toHexString((int)bytes[i] & 0xff));
            strBuffer.append(", ");
        }
        strBuffer.append(Integer.toHexString((int)bytes[i] & 0xff));
        strBuffer.append("]");

        return strBuffer.toString();
    }

    public static void main(String[] args){
        new BufferTest5();
    }
}