package com.example.demo;

import lombok.extern.log4j.Log4j2;

import org.junit.Test;

import java.io.IOException;

import java.io.PrintWriter;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.util.List;

import java.util.stream.Collectors;

@Log4j2

public class EmployeeTestCase extends BaseTestCase {

    @Test

    public void writeRead() throws IOException {

        //写入文件

        PrintWriter printWriter = new PrintWriter(Files.newBufferedWriter(Paths.get("E://text.txt")));

        list.stream().forEach(printWriter::println);

        printWriter.close();

        //读取文件

        List<String> content = Files.lines(Paths.get("E://text.txt")).peek(System.out::println).collect(Collectors.toList());

    }

}

package com.example.demo;

import java.util.Arrays;

import java.util.List;

public class BaseTestCase {

    protected static final List<Employee> list = Arrays.asList(

            new Employee(1, "Alex", 1000),

            new Employee(2, "Michael", 2000),

            new Employee(3, "Jack", 1500),

            new Employee(4, "Owen", 1500),

            new Employee(5, "Denny", 2000));

}

Employee(id=1, name=Alex, salary=1000.0)

Employee(id=2, name=Michael, salary=2000.0)

Employee(id=3, name=Jack, salary=1500.0)

Employee(id=4, name=Owen, salary=1500.0)

Employee(id=5, name=Denny, salary=2000.0)