演示缓冲区的操作流程

import java.nio.IntBuffer;

public class IntBufferDemo01 {
    public static void main(String[] args) {
        IntBuffer buf = IntBuffer.allocate(10);
        System.out.print("The position,limit and capacity before input data:");
        System.out.println("position=" + buf.position() + ",limit="
                + buf.limit() + ",capacity=" + buf.capacity());
        int temp[] = { 3, 4, 5 };
        buf.put(3);
        buf.put(temp);
        System.out.print("The position,limit and capacity after input data:");
        System.out.println("position=" + buf.position() + ",limit="
                + buf.limit() + ",capacity=" + buf.capacity());
        buf.flip();
        System.out.print("The position,limit and capacity when outputing:");
        System.out.println("positon=" + buf.position() + ",limt=" + buf.limit()
                + ",capacity=" + buf.capacity());
        System.out.print("The content in buffer:");
        while (buf.hasRemaining()) {
            int x = buf.get();
            System.out.print(x + ",");
        }
    }
}

The output：

The position,limit and capacity before input data:position=0,limit=10,capacity=10
The position,limit and capacity after input data:position=4,limit=10,capacity=10
The position,limit and capacity when outputing:positon=0,limt=4,capacity=10
The content in buffer:3,3,4,5,