为什么这个程序会内存泄漏？

该程序后期会不断 GC，但是又无法回收多少内存，最终可能会 OOM

import java.math.BigDecimal; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.concurrent.ScheduledThreadPoolExecutor; import java.util.concurrent.ThreadPoolExecutor; import java.til.concurrent.TimeUnit; /** * 从数据库中读取信用数据，套用模型，并把结果进行记录和传输 */ public class T15_FullGC_Problem01 { private static class CardInfo { BigDecimal price = new BigDecimal(0.0); String name = "张三"; int age = 5; Date birthdate = new Date(); public void m() {} } private static ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(50, new ThreadPoolExecutor.DiscardOldestPolicy()); public static void main(String[] args) throws Exception { executor.setMaximumPoolSize(50); for (;;){ modelFit(); Thread.sleep(100); } } private static void modelFit(){ List<CardInfo> taskList = getAllCardInfo(); taskList.forEach(info -> { // do something executor.scheduleWithFixedDelay(() -> { //do sth with info info.m(); }, 2, 3, TimeUnit.SECONDS); }); } private static List<CardInfo> getAllCardInfo(){ List<CardInfo> taskList = new ArrayList<>(); for (int i = 0; i < 100; i++) { CardInfo ci = new CardInfo(); taskList.add(ci); } return taskList; } }