如何在Java中将对象引用用作while循环条件？

Question

我是Java的新手,遇到了一个带有'while'循环的程序,该循环的条件是对象引用/调用.我彻底跟踪了代码并没有看到对象的任何终止条件(如果while循环条件中的对象具有'while'循环实现引起的终止条件,那将是有意义的).

注意:这涉及'内部'/'嵌套'类,所以我甚至不确定这是否有效.如何通过这种语法来满足循环？我将尝试在下面的伪代码中构建我的问题:

class DemoClass {

    demoClassfoo() {

        InnerClassdemo object2 = this.new InnerDemoClass;

        // Here is where my confusion is. I always thought that the 
        // while loop had to terminate with a logical statement being 
        // satisfied: like it is calling an object? 

        while(object2.innerClassfoo()) { 

            IMPLEMENTATIONS;             
        }                                
    }                                    

    class InnerDemoClass {               

        innerDemoClassfoo() {

            IMPLEMENTATION;
        }
    }

    public static void main(String[] args) {

        DemoClass object = new DemoClass();

    }
}

Answer 1

这是有效的,因为该方法innerClassfoo返回一个boolean值,从而满足while条件.顺便说一句,代码应如下所示:

class InnerDemoClass{               

    boolean innerDemoClassfoo(){
        //implementation goes here
        //make sure to ALWAYS return the value
        boolean result = ...
        return result;
    }
}