IoBuffer的wrap,rewind的使用

 

public class Test {public static void main(String[] args) {IoBuffer buffer = IoBuffer.wrap(new byte[]{0x0D, '+', 0x0A});System.out.println(buffer); // HeapBuffer[pos=0 lim=3 cap=3: 0D 2B 0A]System.out.println("remaining:" + buffer.remaining()); // remaining:3byte[] b = new byte[3];buffer.get(b);System.out.println(buffer); // HeapBuffer[pos=3 lim=3 cap=3: empty]System.out.println("remaining:" + buffer.remaining()); //remaining:0buffer.rewind(); // 把pos重新设为0System.out.println(buffer); // HeapBuffer[pos=0 lim=3 cap=3: 0D 2B 0A]System.out.println("remaining:" + buffer.remaining()); // remaining:3}}