while() 语句在这儿的作用?
在下面这段程序里面有一个while语句,但是语句后直接就跟着分号,这和普通的while语句有什么区别吗? 管辖的范围有多大?
class Bank{private Account[] account;private boolean locked;public Bank(){account = new Account[100];for(int i = 0; i < account.length; i++){account[i] = new Account();}locked = false;}public void transferMoney(int accountNumber, float amount){while(locked);locked = true;float oldBalance = account[accountNumber].getBalance();float newBalance = oldBalance + amount;account[accountNumber].setBalance(newBalance);locked = false;}}