datastream1.java

来自「这是清华大学编写的JAVA教材中所有题目的源代码！」· Java 代码 · 共 50 行

import java.io.*;

public class DataStream1
{
    public static void main(String[] args) 
	{
		try
        {
            DataOutputStream out = new DataOutputStream(new FileOutputStream("content.txt"));
			//初始化输出数据
	        boolean b=true;
	        char c='#';
	        int i=10;
	        long l=100;
	        float f=1.2f;
	        double d = 3.4;
	        //数据输出
	        out.writeBoolean(b);
	        out.writeChar(c);
	        out.writeInt(i);
	        out.writeLong(l);
	        out.writeFloat(f);
	        out.writeDouble(d);
	        out.close();
	

	        DataInputStream in = new DataInputStream(new FileInputStream("content.txt"));
			//数据读入
			b=in.readBoolean();
			c=in.readChar();
			i=in.readInt();
			l=in.readLong();
			f=in.readFloat();
			d=in.readDouble();
			in.close();
			//数据显示
			System.out.println(b);
			System.out.println(c);
			System.out.println(i);
			System.out.println(l);
			System.out.println(f);
			System.out.println(d);
		}
		catch (Exception e)
		{
			e.printStackTrace();
        }
    }
}