Question

class Candy{
    static {
        System.out.println("Loading Candy");
    }
}
class Gum{
    static {
        System.out.println("Loading Gum");
    }
}
class Cooki{
    static {
        System.out.println("Loading Cooki");
    }
}

public class SweetShop {
    public static void main(String args[]) {
        System.out.println("inside main");
        new Candy();

        try {
            Class.forName("Gum");
        }catch(ClassNotFoundException e) {
            System.out.println("Couldn't fide Gum");
        }
        System.out.println("After Class.forName(\"Gum\")");
        new Cooki();
        System.out.println("After create Cooki");
    }
}

/输出：

内部主体装糖果无法忍受口香糖在Class.forName（“ Gum”）之后加载库克创建Cooki后

这是我的代码和结果，找不到胶。

这本书中的Java Rtti示例，结果是：

inside main
Loading Candy
Loading Gum
After Class.forName("Gum")
Loading Cooki
After create Cooki

Class.forName（）似乎不起作用，它没有初始化口香糖。

Answer 1

    package test;

class Candy {
    static {
        System.out.println("Loading Candy");
    }
}

class Gum {
    static {
        System.out.println("Loading Gum");
    }
}

class Cooki {
    static {
        System.out.println("Loading Cooki");
    }
}

public class SweetShop {
    public static void main(String args[]) {
        System.out.println("inside main");
        new Candy();

        try {
            Class.forName("test.Gum");
        } catch (ClassNotFoundException e) {
            System.out.println("Couldn't fide Gum");
        }
        System.out.println("After Class.forName(\"Gum\")");
        new Cooki();
        System.out.println("After create Cooki");
    }
}

<thinking in =“” java =“”>中的一个示例，它似乎不起作用

1 个答案: