import java.io.File;
import java.io.RandomAccessFile;

public class RandomAcessFileDemo {
    public static void main(String[] args) throws Exception {
        File f = new File("temp.txt");
        RandomAccessFile raf = null;
        raf = new RandomAccessFile(f, "rw");
        String name = "zhangsan";
        Integer age = 15;
        raf.writeBytes(name);
        raf.skipBytes(8);
        raf.writeInt(age);
        raf.seek(0);//找位置
        byte[] b = new byte[8];
        raf.read(b);
        System.out.println(new String(b));
        System.out.println(raf.readInt());
        raf.close();
    }

}