为什么我们不能在Java文件中访问非公共类的方法？

Question

class Basics415 {   

    public static void main_hooo(){
        out.println("1234");    
    }

    void main_ho(){
    }       
}

In another file called Basics5.java:

public class Basics5 extends Basics415{   

    public static void main(){
        main_hooo();        // We are accessing a public method of Class Basics415 
        main_ho();  // BUT WE CANNOT ACCESS A NON PUBLIC METHOD FROM SAME CLASS 
    }       
}

Why can't we access main_ho() while we can access main_hooo() ?

Why basic415.main_ho or Basic415.main_hooo doesn't work inside the main method of Basics5?

Answer 1

Because the methods are static and therefore the classes need are needed to access them.

Basics4.method_Inside_Basics4()

So, after you edited a bunch of code ...

public class Basics5 extends Basics415{   

    public static void main(){
        // accessing a static method in a static context.
        Basics415.main_hooo();

        // accessing an instance method in a static context.
        final Basics415 b = new Basics415();
        b.main_ho();
    }       
}

Answer 2

你的问题是，类Basics5的主要梅托德是，静态方法是在类级别而不是实例级别定义的静态方法，那么你就不能使用这种方法在静态方法不是一成不变的。

Answer 3

You should access method_Inside_Basics4 method as Basics4.method_Inside_Basics4(). As Basics5 class extends Basics415 class, it inherits main_hooo method, which can be assessed from Basics5.