每日日报2021 9/26

今天我完成一个Bean序列化实例

package com.atguigu.mapreduce.writable;

import org.apache.hadoop.io.Writable;

import java.io.DataInput;

import java.io.DataOutput;

import java.io.IOException;

//1 继承 Writable 接口

public class FlowBean implements Writable {

private long upFlow; //上行流量

private long downFlow; //下行流量

private long sumFlow; //总流量

//2 提供无参构造

public FlowBean() {

}

//3 提供三个参数的 getter 和 setter 方法

public long getUpFlow() {

return upFlow;

}

public void setUpFlow(long upFlow) {

this.upFlow = upFlow;

}

public long getDownFlow() {

return downFlow;

}

public void setDownFlow(long downFlow) {

this.downFlow = downFlow;

}

public long getSumFlow() {

return sumFlow;