package randomFile;
import java.io.*;

public class MyRandomFile {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO 自動(dòng)生成方法存根
       try
       {
    	   RandomAccessFile randomfile1=new RandomAccessFile("./two.dat","rw");
    	   //file length
    	   System.out.println("文件長(zhǎng)度"+randomfile1.length());
    	   System.out.println("文件指針"+randomfile1.getFilePointer());
    	   //將文件指針后依5個(gè)字節(jié)
    	   randomfile1.skipBytes(5);
    	   //文件指針
    	   System.out.println("文件指針"+randomfile1.getFilePointer());
          // 寫一個(gè)字節(jié)
    	   randomfile1.write(65);
    	   System.out.println("文件長(zhǎng)度"+randomfile1.length());
           System.out.println("file pointer"+randomfile1.getFilePointer());
           //close file
           randomfile1.close();
       }
       catch(FileNotFoundException e)
       {
    	   System.out.println(e);
    	   System.exit(-1);
       }
       catch(IOException e)
       {
    	   e.printStackTrace();
       }
	}

}