如果。。。其他的对于所有条件，if执行最终else

Question

我是Java新手，正在尝试使用if。。。其他的if语句。看起来很简单，但是，不管其他条件是否为真，最终的“else”语句（默认值）都会执行。换句话说，对于所有条件，代码都返回0

这是我的代码：

public class Choice {

    private int type; //stores the choice type: 0=rock, 1=paper, 2=scissors
    private ColorImage choiceImage; //stores the image to be displayed on the canvas

    public Choice(int type) {
        //initialize the "type" instance varialble
        this.type = type;
    }

    /**
     * Get a number that represents the choice type
     * 
     * @return  a number that represents the choice type: 0=rock, 1=paper,     2=scissors
     */
    public int getType() {
        return type;
    }

    /**
     * Compare "this" with anotherChoice
     * 
     * @param   anotherChoice   the choice to be compared
     * @return  either 1, -1, or 0 which indicates the comparison result: 1 means "this" wins anotherChoice; -1 means "this" loses to anotherChoice; 0 means "this" and anotherChoice are the same
     */
    public int compareWith(Choice anotherChoice) {
        if ((this.type == 0) && (type == 1))
            return -1;
        else if (this.type == 0 && type == 2)
            return 1;
        else if (this.type == 1 && type == 0)
            return 1;
        else if (this.type == 1 && type == 2)
            return -1;
        else if (this.type == 2 && type == 0)
            return -1;
        else if (this.type == 2 && type == 1)
            return 1;
        else
            return 0;
    }
}