Java 如何防止扫雷舰程序中的堆栈溢出错误？

我做了一个程序，设计成像扫雷游戏一样运行。它被设置为GridLayout，主代码中有一个名为getNumberSmall的递归代码，在单击按钮时运行。它不会递归运行，除非点击的按钮是一个空白，即如果你玩过扫雷游戏，既不是地雷也不是数字。当单击一个空白时，代码应该递归地运行在单击的空白按钮周围的按钮上。然而，当我这样做时，我会得到一个堆栈溢出错误。我该如何解决这个问题

public void getNumberSmall(JButton b3){
    JButton above = new JButton();
    JButton below = new JButton();
    JButton right = new JButton();
    JButton left = new JButton();
    JButton DRight = new JButton();
    JButton DLeft = new JButton();
    JButton DRightD = new JButton();
    JButton DLeftD = new JButton();
    JButton clicked = b3;
    int myX = (int) clicked.getClientProperty("column");
    int myY = (int) clicked.getClientProperty("row");
    int mNum = 0;

    if(myX < 9){
        for(int i = 0; i < small.size(); i++){
            if((int) small.get(i).getClientProperty("column") - 1 == myX){
                if((int) small.get(i).getClientProperty("row") == myY){
                    right = small.get(i);
                    if((int)right.getClientProperty("enabled") == 1){
                        right = null;
                    }
                }

            }
        }
    }
    else{
        right = null;
    }

    if(myX > 1){
        for(int i = 0; i < small.size(); i++){
            if((int) small.get(i).getClientProperty("column") + 1 == myX){
                if((int) small.get(i).getClientProperty("row") == myY){
                    left = small.get(i);
                    if((int)left.getClientProperty("enabled") == 1){
                        left = null;
                    }
                }

            }
        }
    }
    else{
        left = null;
    }

    if(myY < 9){
        for(int i = 0; i < small.size(); i++){
            if((int) small.get(i).getClientProperty("column") == myX){
                if((int) small.get(i).getClientProperty("row") - 1 == myY){
                    below = small.get(i);
                    if((int)below.getClientProperty("enabled") == 1){
                        below = null;
                    }
                }

            }
        }
    }
    else{
        below = null;
    }

    if(myY > 1){
        for(int i = 0; i < small.size(); i++){
            if((int) small.get(i).getClientProperty("column") == myX){
                if((int) small.get(i).getClientProperty("row") + 1 == myY){
                    above = small.get(i);
                    if((int)above.getClientProperty("enabled") == 1){
                        above = null;
                    }
                }

            }
        }
    }
    else{
        above = null;
    }

    if(myY == 9){
        DRightD = null;
        DLeftD = null;
    }
    if(myY == 1){
        DRight = null;
        DLeft = null;
    }
    if(myX == 9){
        DRightD = null;
        DRight = null;
    }
    if(myX == 1){
        DLeftD = null;
        DLeft = null;
    }
    if(DRight != null){
        for(int i = 0; i < small.size(); i++){
            if((int) small.get(i).getClientProperty("column") - 1 == myX){
                if((int) small.get(i).getClientProperty("row") + 1 == myY){
                    DRight = small.get(i);
                    if((int)DRight.getClientProperty("enabled") == 1){
                        DRight = null;
                    }
                }

            }
        }
    }

    if(DLeft != null){
        for(int i = 0; i < small.size(); i++){
            if((int) small.get(i).getClientProperty("column") + 1 == myX){
                if((int) small.get(i).getClientProperty("row") + 1 == myY){
                    DLeft = small.get(i);
                    if((int)DLeft.getClientProperty("enabled") == 1){
                        DLeft = null;
                    }
                }

            }
        }
    }

    if(DRightD != null){
        for(int i = 0; i < small.size(); i++){
            if((int) small.get(i).getClientProperty("column") - 1 == myX){
                if((int) small.get(i).getClientProperty("row") - 1 == myY){
                    DRightD = small.get(i);
                    if((int)DRightD.getClientProperty("enabled") == 1){
                        DRightD = null;
                    }
                }

            }
        }
    }

    if(DLeftD != null){
        for(int i = 0; i < small.size(); i++){
            if((int) small.get(i).getClientProperty("column") + 1 == myX){
                if((int) small.get(i).getClientProperty("row") - 1 == myY){
                    DLeftD = small.get(i);
                    if((int)DLeftD.getClientProperty("enabled") == 1){
                        DLeftD = null;
                    }
                }

            }
        }
    }

    if(above != null){
        if((int) above.getClientProperty("mines") == 1){
            mNum = mNum + 1;
        }
    }
    if(below != null){
        if((int) below.getClientProperty("mines") == 1){
            mNum = mNum + 1;
        }
    }
    if(right != null){
        if((int) right.getClientProperty("mines") == 1){
            mNum = mNum + 1;
        }
    }
    if(left != null){
        if((int) left.getClientProperty("mines") == 1){
            mNum = mNum + 1;
        }
    }
    if(DRight != null){
        if((int) DRight.getClientProperty("mines") == 1){
            mNum = mNum + 1;
        }
    }
    if(DLeft != null){
        if((int) DLeft.getClientProperty("mines") == 1){
            mNum = mNum + 1;
        }
    }
    if(DRightD != null){
        if((int) DRightD.getClientProperty("mines") == 1){
            mNum = mNum + 1;
        }
    }
    if(DLeftD != null){
        if((int) DLeftD.getClientProperty("mines") == 1){
            mNum = mNum + 1;
        }
    }

    if(mNum == 0){
        String num2 = "" + mNum;
        clicked.setText(num2);

        if((above != null) && ((int)above.getClientProperty("enabled") == 0)){
        getNumberSmall(above);
        above.putClientProperty("enabled", 1);
        }

        if((below != null) && ((int)below.getClientProperty("enabled") == 0)){
        getNumberSmall(below);
        below.putClientProperty("enabled", 1);
        }

        if((right != null) && ((int)right.getClientProperty("enabled") == 0)){
        getNumberSmall(right);
        right.putClientProperty("enabled", 1);
        }

        if((left != null )  && ((int)left.getClientProperty("enabled") == 0)){
        getNumberSmall(left);
        left.putClientProperty("enabled", 1);

        }

        if((DRight != null)  && ((int)DRight.getClientProperty("enabled") == 0)){
        getNumberSmall(DRight);
        DRight.putClientProperty("enabled", 1);

        }

        if((DLeft != null)  && ((int)DLeft.getClientProperty("enabled") == 0)){
        getNumberSmall(DLeft);
        DLeft.putClientProperty("enabled", 1);

        }

        if((DRightD != null)  && ((int)DRightD.getClientProperty("enabled") == 0)){
        getNumberSmall(DRightD);
        DRightD.putClientProperty("enabled", 1);

        }

        if((DLeftD != null)  && ((int)DLeftD.getClientProperty("enabled") == 0)){
        getNumberSmall(DLeftD);
        DLeftD.putClientProperty("enabled", 1);

        }


    }

    else{
    String number = "" + mNum;
    clicked.setText(number);
    }
}

---

在单击的按钮上似乎没有启用任何设置，因此没有任何设置可以阻止循环中的递归

e、 g:点击->上方->下方->上方

getNumberSmall(above);
above.putClientProperty("enabled", 1);

---

在这里，在putClientProperty之前使用getNumberSmall将导致程序调用getNumberSmall以使用指定的按钮，而不反映对按钮的任何更改，这将导致递归继续，直到抛出StackOverflower错误。如果切换两个方法调用，则在按钮作为参数传递之前，JButton的指定属性将发生更改，此更改将反映在JButton参数上。

尝试运行调试器。您可能会发现递归为什么不会停止。但如果让我猜的话，可能是因为你在putClientProperty.TNT之前调用了getNumberSmall——你是对的！我切换了getNumberSmall和putClientProperty，在所有这些之前，将单击的按钮设置为已启用，然后它就可以工作了！谢谢