使用Condition来实现,等四个线程处理结束了,再处理下一个输入,测试用例里有多个输入。 import java.util.*;import java.util.concurrent.locks.Condition;import java.util.concurrent.locks.ReentrantLock; public class Main { static ReentrantLock lock = new ReentrantLock(); static Condition condition1 = lock.newCondition(); static Condi...