数据操作流DataOutputStream、DataInputStream类

【例子1】

import java.io.DataOutputStream;  
import java.io.File;  
import java.io.FileOutputStream;    
import java.io.IOException;   

public class DataOutputStreamDemo{

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

        File file = new File("d:" + File.separator + "hello.txt");

        char[] ch = { "A", "B", "C" };

        DataOutputStream out = null;

        out = new DataOutputStream(new FileOutputStream(file));

        for(char temp : ch){

            out.writeChar(temp);

        }

        out.close();

    }

}

【运行结果】：

A B C

现在我们在上面例子的基础上，使用DataInputStream读出内容。

【例子2】

import java.io.DataInputStream;  
import java.io.File;  
import java.io.FileInputStream;  
import java.io.IOException;  

public class DataOutputStreamDemo{

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

        File file = new File("d:" + File.separator + "hello.txt");

        DataInputStream input = new DataInputStream(new FileInputStream(file));

        char[] ch = new char[10];

        int count = 0;

        char temp;

        while((temp = input.readChar()) != "C"){

            ch[count++] = temp;
        }

        System.out.println(ch);

    }

}

【运行结果】：

AB