example06_intio.java

java课程设计教材上的程例题序代码

package example;

import java.io.*;

public class Example06_IntIO
{
	public static void main(String[] args)
	{
		try
		{
			RandomAccessFile raf = new RandomAccessFile("file/ints.dat", "rw");
			int num = (int)raf.length() / 4;

			int max, min, d;
			d = raf.readInt();
			System.out.println(d);
			max = min = d;
			for (int i = 2; i <= num+10; i++)
			{
				try{
				d = raf.readInt();
				}catch (EOFException e) {
					break;
				}
				System.out.println(d);
				max = d > max ? d : max;
				min = d < min ? d : min;
			}
			System.out.println("max = " + max);
			System.out.println("min = " + min);
			
			raf.writeInt(max);
			raf.writeInt(min);
			
			raf.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
}