用java写csv测试数据的问题

Question

目前上司让我写1000万条测试数据，
主键是90000000开始的逐一递增数值，其余的数据为a，b，c，d，e，f的数据的反复排列。
文件的单位为10万件一个，请问该如何实现？

回答的好加钱。

Answer 1

需要a-f循环的话，就像下面这样就可以了：

package test;

import java.io.BufferedWriter;
import java.io.FileWriter;

public class Test {

    private static final int FILE_SIZE = 100;
    private static final int FILE_COUNT = 100000;
    private static final String[] FILE_CONENT = {"a","b","c","d","e","f"};

    private static int INDEX = 90000000;
    
    public static void main(String[] args) throws Exception {
        int tmp = 100000000;
        System.out.println(tmp);
        for (int i = 1; i <= Test.FILE_SIZE; i++) {

            try (BufferedWriter bw = new BufferedWriter(new FileWriter("testcase" + i + ".csv"))) {
                for (int j = 0; j < Test.FILE_COUNT; j++) {
                    bw.write(++INDEX + "," + Test.FILE_CONENT[j%6]);
                    bw.newLine();
                }
            }
        }

    }
}