RandomAccessFile实现随机读取

package com.test;

import java.io.FileOutputStream;
import java.io.RandomAccessFile;

public class Test {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {
		RandomAccessFile randomAccessFile = new RandomAccessFile("c:\\a.rar",
				"r");
		// System.out.println(randomAccessFile.length());
		// randomAccessFile.skipBytes(1000);
		// randomAccessFile.skipBytes(1000);
		FileOutputStream outputStream = new FileOutputStream("c:\\b.rar");
		byte[] b = new byte[1024];
		int i = -1;
		while ((i = randomAccessFile.read(b, 0, b.length)) != -1) {
			System.out.println(randomAccessFile.getFilePointer());
			outputStream.write(b, 0, i);
			// randomAccessFile.skipBytes(1024);

		}
		outputStream.close();

		randomAccessFile.close();
	}

}