使用Comparable接口自定义排序

来源：互联网发布：怎么学java 编辑：程序博客网时间：2024/05/29 04:41

public interface Comparable<T>{

int compareTo(T other);

}

package com.mingrisoft;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class Test {
public static void main(String[] args) {
System.out.println("序列化之前：");
Address address = new Address("中国", "吉林", "长春");// 创建address对象
Employee employee1 = new Employee("张XX", 30, address);// 创建employee1对象
System.out.println("员工1的信息：");
System.out.println(employee1);// 输出employee1对象
System.out.println("序列化之后：");
ObjectOutputStream out = null;
ObjectInputStream in = null;
Employee employee2 = null;
try {
out = new ObjectOutputStream(new FileOutputStream("employee.dat"));
out.writeObject(employee1);// 将对象写入到本地文件中
in = new ObjectInputStream(new FileInputStream("employee.dat"));
employee2 = (Employee) in.readObject();// 从本地文件读取对象
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} finally {
if (in != null) {
try {
in.close();// 关闭输入流
} catch (IOException e) {
e.printStackTrace();
}
}
if (out != null) {
try {
out.close();// 关闭输出流
} catch (IOException e) {
e.printStackTrace();
}
}
}

if (employee2 != null) {
employee2.getAddress().setState("中国"); // 修改员工地址
employee2.getAddress().setProvince("四川"); // 修改员工地址
employee2.getAddress().setCity("成都"); // 修改员工地址
employee2.setName("李XX"); // 修改员工名字
employee2.setAge(24);// 修改员工年龄
System.out.println("员工1的信息：");
System.out.println(employee1);// 输出employee1对象
System.out.println("员工2的信息：");
System.out.println(employee2);// 输出employee2对象
}

}

}

0 0