ObjectOutputStream writeLong()方法

java.io.ObjectOutputStream.writeLong(long val) 此方法写入64位long。

1 语法

public void writeLong(long val)

2 参数

val：要写入的long值。

3 返回值

无

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.io.ObjectOutputStream.writeLong(long val)方法的例子
 */
import java.io.*;

public class Demo {
    public static void main(String[] args) {
        long l = 976349698745987459l;

        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.writeLong(l);
            oout.writeLong(984876837644l);

            // 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
            System.out.println("" + ois.readLong());
            System.out.println("" + ois.readLong());
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

输出结果为：

976349698745987459
984876837644