ObjectOutputStream write()方法

java.io.ObjectOutputStream.write(byte[] buf, int off, int len) 此方法写入字节的子数组。

1 语法

public void write(byte[] buf, int off, int len)

2 参数

buf：要写入的数据。

off：数据中的起始偏移量。

len：写入的字节数。

3 返回值

无

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.io.ObjectOutputStream.write(byte[] buf, int off, int len)方法的例子
 */
import java.io.*;

public class Demo {
    public static void main(String[] args) {
        byte[] b = {'h', 'e', 'l', 'l', 'o'};

        try {
            // create a new file with an ObjectOutputStream
            FileOutputStream out = new FileOutputStream("test.txt");
            ObjectOutputStream oout = new ObjectOutputStream(out);

            // write something in the file
            oout.write(b, 0, 3);

            // close the stream
            oout.close();

            // create an ObjectInputStream for the file we created before
            ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

            // read and print what we wrote before
            for (int i = 0; i < 3; i++) {
                System.out.print("" + (char) ois.readByte());
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

输出结果为：

hel