Synchronizedsynchronized 메서드import static util.MyLogger.log;import static util.ThreadUtils.sleep;public class BankAccountV2 implements BankAccount { private int balance; public BankAccountV2(int initialBalance) { this.balance = initialBalance; } @Override public synchronized boolean withdraw(int amount) { log("거래 시작: " + getClass().getSimpleName()); // 잔고가 출금액..