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();
	}

}