为什么我的程序在通过论证时会两次提出相同的问题？

Question

当我只需要参数toBePainted

时，此代码要求两次相同的问题

public static int getToBePainted(){
    //Gets the rooms square footage
    int height = 0;
    String heightString = "";
    int width = 0;
    String widthString = "";
    int length = 0;
    String lengthString = "";
    int toBePainted = 0;

    heightString = JOptionPane.showInputDialog(" What is the hieght of the ceiling in feet: ");
    widthString = JOptionPane.showInputDialog("What is the width of the room in feet: ");
    lengthString = JOptionPane.showInputDialog("What is the length of the room in feet: ");
    height = Integer.parseInt(heightString);
    width = Integer.parseInt(widthString);
    length = Integer.parseInt(lengthString);

    toBePainted = Math.round((((length * width) * 4) + (height * width)) - (6));

    return toBePainted;
}

public static int getBaseAmmount(){
    int squareFeet = getToBePainted();
    int baseAmmount = 0;
    int gallons = 0;

    gallons = (squareFeet / 400);
    if (gallons < 1) {
        gallons = 1;
    }

    baseAmmount = (gallons * 30);

    return baseAmmount;
}

我只需要从getToBePainted获得答案而不是整个函数。