java代码----I/O流写出整型，浮点型，

总结：

package com.a.b;

import java.io.*;

public class fdsf {

	public static void main(String[] args) throws IOException {

		File f = new File("D:\\WO.txt");

		// f.createNewFile();//这里创建文件

		if (f.exists()) {

			f.delete();

		}

		f.createNewFile();

		RandomAccessFile raf = new RandomAccessFile("d:\\d.txt", "rw");

		raf.writeChars("are you ready:");

		long p1 = raf.getFilePointer();

		System.out.println("当前文件指针位置：" + p1);

		raf.writeLong(2345);// 写入一个长整型

		raf.writeFloat(534.2f);// 写入一个浮点型

		raf.writeInt(42);// 写入一个整型

		for (int i = 0; i < p1; i++) {

			raf.seek(i);

			System.out.print(raf.readChar());

		}

		System.out.println();

	}

}