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Questions tagged [outer-classes]

49 questions
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Introducing new member function to an outer class of a reusable header leading to failure in loading components which utilizes it

I have a reusable header which is consumed by multiple components. I introduced a member function and a member variable to the outer class and called it from one component. The implementation of the function was done in the .cpp of the reusable…
Medha Agrawal
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Accessing outer-class fields through inner-class instance from outer-class

This is a short subquestion of a larger question I am working towards to. Why can't I access the outer classes field through an instance of inner class in outer class in line 8? The field is visible from inner class. The problem persists for…
Malte
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Why does javac create an additional class?

I have compiled the following code (Methods and variables are elided for brevity): // Outer.java public class Outer { private class Inner { } void someMethod() { Inner inObj = this.new Inner(); } public static…
Seshadri R
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Is thread safe calling outer class variable?

public class Status { private Scheduler scheduler; private volatile Boolean lastResult; public Status() { scheduler = new Scheduler(); scheduler.everyTenSeconds(new Action()); } public boolean isSth() { …
jnr
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Qt C++ inner class access to outer class

I have a question again: I have a class PBV t(inherits from Tab) hat has a class Geometry. Geometry is the parent of Geo_1. From Geo_1 I want to have access to methods of PBV ( e.g. printContent . How do I do that? I am able to create Signal-Slots…
user3443063
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Java method not working in nested classes

I have 1 outer class with 1 inner class like this: public class Outer extends PircBot { ... public class Inner extends SessionAdapter { ... } } Inside that Inner class I am trying to invoke a method called sendMessage(..) which is inside…
Faraz
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In case of inner and outer classes, Java

There was one MCQ ( Multiple Choice Question ) while I was reading my Java study book and that MCQ is: Question : In case of inner and outer classes, _________ Options are : (a) The members of outer class can not be accessed by inner class. (b) The…
Natha Odedara
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Access object created in innerClass from elsewhere java

so i have outerClass and innerClass, and i want to access the object created from innerClass using outerClass, example: public Class outerClass{ Class innerClass{ //properties } } so what i want to do is something like this: public…
nikagar4
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How to Store in Global Variable from local variable?

At the last Toast, It will print blank Toast.Why? I am passing local variable to a global variable and thus printed it. Why Java does not allow this? And What is the Solution Of this? Here is the code... String sb_temp=" "; //global…
Ankur_009
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Create Instance of a Class that is Used in the Constructor of its Outer Class

I'm trying to create an instance of a class that is used in the constructor of its outer class. Referring to the code below, I need a UserData object but I also need a TimeOnlineInfo object to create it, and I don't see a way of getting…
kmecpp
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Java outer-class access to inner-class interface constants

Excude me if this is a dumb question. I have a "Fragment" outer-class with and inner-class interface. This interface is only implemented by one other Activity-class using "implements OuterFragment.ParentActivityListener". I would like to have a few…
Koniak
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DialogFragment - make it as a member of the outerclass instead of static inner class

this is a small example from Android tutorial showing a DialogFragment and DatePicker. Its implemented as a static inner class of the MainActivity. I wonder if its possible to change the code so that it becomes a member-function of MainActivity…
user3155478
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Have C++11 some portable and effective way to access enclosing class from nested class?

What I am needing can be done by storing this pointer of enclosing class into nested class for example this way: class CEnclosing { public: class CNested : public CSomeGeneric { public: CNested(CEnclosing* e) : m_e(e) {} …
user3123061
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How to change variable value throughout outer class when it changed in an inner one?

I have a swing class that includes a String variable str3 declared as final and two ActionListener interfaces that implemented by two JButtons b1 and b2 , when b1 JButton is pressed str3 String takes a value , My question here how to…
PHPFan
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Access variable update in inner class from outer class in Java

I have declared some variables in outer class and trying to get the value of this variables from inner class and do some operation on this variables in a method in outer class. I am sharing here how I am trying to do it through some sample code.…
MSIslam
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