“表达式预期”和“找不到符号”错误

Question

我最近在java上了一些OOP课程。在今天实现它时，我在程序中遇到了“找不到符号”错误。旁边的建议中写着“期望表达”。我已经试着找出我的错误有一段时间了，但到目前为止我还没有遇到任何运气。有人能帮帮我吗？

这是我的主要课程：

public class Slotmachine {

    public static void main(String[] args) {

        int plays;

        SlotMac machine[] = new SlotMac[3];    
                                                 // error seems to be somewhere here!
        SlotMac[0] = new SlotMac(3,35,30);    
        SlotMac[1] = new SlotMac(10,100,60);
        SlotMac[2] = new SlotMac(4,10,9);

        plays = machine.firstmachine(machine[0]);
    }
}

我的另一个班：

public class SlotMac {

    int win_plays;
    int times_played;
    int quarters;

    public SlotMac(int times_played, int win_plays, int quarters) {
        this.win_plays = win_plays;
        this.times_played = times_played;
        this.quarters = quarters;
    }

    public int firstmachine(SlotMac one) {
        return plays;
    }
}

java：找不到符号symbol:class SlotMac位置：class Slotmachine

同样的错误一堆时间。

Answer 1

将此更改为：

    SlotMac[0] = new SlotMac(3,35,30);    
    SlotMac[1] = new SlotMac(10,100,60);
    SlotMac[2] = new SlotMac(4,10,9);

这是：

machine[0] = new SlotMac(3,35,30);    
machine[1] = new SlotMac(10,100,60);
machine[2] = new SlotMac(4,10,9);

Answer 2

您正在创建机器数组，因此更改

SlotMac[0] = new SlotMac(3,35,30);    
SlotMac[1] = new SlotMac(10,100,60);
SlotMac[2] = new SlotMac(4,10,9);

到

machine[0] = new SlotMac(3,35,30);    
    machine[1] = new SlotMac(10,100,60);
    machine[2] = new SlotMac(4,10,9);

Answer 3

您应该使用数组的变量名而不是类名。

machine[0] = new SlotMac(3,35,30);    
machine[1] = new SlotMac(10,100,60);
machine[2] = new SlotMac(4,10,9);

我看到你修好了其他相关的东西