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Accessing private members

In those cases where it is necessary for an object of the local class to access private members of the containing object, the compiler automaticallycreates and uses accessor methods that make such access possible.

Similar to your code

The bottom line is that the code that is automatically produced by the compiler is probably very similar to code that you would write if you werewriting the program using only top-level classes. The good news is that you don't have to write that extra code, and you don't have to maintain it. Theextra code is written for you, and if you modify your class structure, the extra code is automatically modified accordingly.

Discussion and sample code

The paragraphs that follow will explain a program named InnerClasses07 . This program is designed specifically to illustrate various characteristics of localclasses. I will discuss the program in fragments. A complete listing is shown in Listing 17 near the end of the module.

This program illustrates the use of local classes. The program consists of a total of five classes:

  • Four top-level classes named
    • InnerClasses07
    • A
    • X
    • Y
  • A local class named B.

When compiled, the program produces the class files shown in Figure 1 . The file named A$1$B.class represents the local class. The remaining files in Figure 1 represent the four top-level classes.

Class hierarchy

In the previous module, I explained that once you understand the class file naming convention, you can determine from the filenames how top-level classes and member classes are structured. However, the situation isn't nearly so clear when it comes to local classes and anonymousclasses. This will become more apparent in the next module, which combines local classes and anonymous classes.

Overall program structure and behavior

Containment hierarchy

The program named InnerClasses07 defines a local class named B inside an instance method named meth .

The method named meth is an instance method of a top-level class named A . The method named meth instantiates two separate objects of the local class named B , and calls a method named showB on each of them.

The method named showB displays certain data values that illustrate the characteristics of localclasses, as well as the containment hierarchy among objects of the local class and an object of the containing class.

In this case, objects of the class named B are contained within an object of the class named A . (The class named A is an enclosing class of the class named B .)

Inheritance hierarchy

The top-level class named A extends the top-level class named X , (which in turn, extends Object ).

The class named B is contained in or enclosed by the top-level class named A , but extends the top-level class named Y , (which in turn, extends Object ).

There is no inheritance relationship between the classes X and Y (aside from their common superclass named Object ).

There is no inheritance relationship between the classes A and B .

The method named showB also displays data values that are intended to demonstrate that the inheritance hierarchy is independent of thecontainment hierarchy.

Questions & Answers

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
okay, so you have 6 raised to the power of 2. what is that part of your answer
I don't understand what the A with approx sign and the boxed x mean
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
I'm not sure why it wrote it the other way
I got X =-6
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
oops. ignore that.
so you not have an equal sign anywhere in the original equation?
is it a question of log
Commplementary angles
Idrissa Reply
im all ears I need to learn
right! what he said ⤴⤴⤴
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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