小编use*_*934的帖子

class BadFoodException extends Exception{
    //Do something
}

class Reader {
    private String food1;
    private String food2;
    public static void main(String args[])
    {
        Reader m = new Reader(args);
        for (int i=0; i<args.length; i++){
            try
            {
            m.checkfood(args[i]);
            }
            catch(BadFoodException e){System.out.println(args[i]+ " caught");}

        }
    }
    private Reader(String [] args){
        food1=args[0];
        food2=args[1];
    }
    void checkfood(String food) throws BadFoodException
    {   if( food == "banana")
        throw new BadFoodException();
        System.out.println(food + " passed through.");
    }

}

我正在通过命令行传递两种食物 - 香蕉和芒果.当食物是香蕉时,checkfood方法应该抛出异常..芒果应该通过.然而两者都是通过而不是？为什么？