test6.java

来自「各种关于JAVA的初级编程」· Java 代码 · 共 47 行

import java.io.*;

public class test6
{
    public static void main(String args[])
    {
        try
        {
            DataOutputStream dout = new DataOutputStream(
                new FileOutputStream("MyBinaryFile"));
            for(int j=0; j<6; j++)
            {
                dout.writeUTF("星期" + j);
                dout.writeDouble(30 + j); // 最高温度
                dout.writeDouble(20 + j); // 最低温度
                dout.writeBoolean( j%2==1 ? true : false); //是否降雨
            }
            dout.close();

            DataInputStream din = new DataInputStream(
                new FileInputStream("MyBinaryFile"));
            try
            {
                for(;true;)
                {
                    System.out.print(din.readUTF() + "\t");
                    System.out.print("最高温度：" + din.readDouble() + "\t");
                    System.out.print("最低温度" + din.readDouble() + "\t");
                    System.out.println(((din.readBoolean()) ? "有" : "无") + "降雨");
                }
            }
            catch(EOFException eofe)    
            {
                din.close();
            }
        }
        catch(IOException ioe)
        {
            System.out.println(ioe.getMessage());
        }
        catch(Exception e)
        {
            System.out.println(e.getMessage());
        }
    }
}