java - 我的程序不检查 else-if 语句

Question

我对编码还是新手，所以请耐心等待。我的程序总是检查 if 语句中发生了什么，并且即使值为 false 也不会转到 else-if 语句。那么，为什么会发生这种情况呢？任何帮助将不胜感激。

for (int i = 0; i <= time; i++) { System.out.println("Clock loop = " + i);

        for (int j = 0; j < cashierArr.length; j++) {
            System.out.println("CashierArr at " + j + "  is busy? "
                    + cashierArr[j].busy);
            System.out.println(j);

            if (cashierArr[j].busy = true) {

                cashierArr[j].serveTime -= 1;
                System.out.println("Serve time = "
                        + cashierArr[j].serveTime);
                System.out.println("In busy");

            } else if (cashierArr[j].busy = false) {


                Customer tempCust = (Customer) queue.poll();


                cashierArr[j].serveTime = tempCust.serviceTime;
                System.out
                        .println("serveTime = " + cashierArr[j].serveTime);
                cashierArr[j].busy = true;

                System.out.println("In not busy");
            }

        }

Answer 1

请执行以下操作，

if (cashierArr[j].busy ==  true) { // == is comparison operator, while = is assign

you have used only single assignment which will actually assign the value to true means it's always remains true

if (cashierArr[j].busy =  true)