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Source code for above classes

Frame2.java

package view; import java.awt.*; // to use Container.import java.awt.event.*; // to use WindowAdpater and WindowEvent. import javax.swing.*; // to use JFrame./** * A subclass of AFrame containing two JButtons that have event handler called* "commands" to dynamically switch layout managers when the buttons are clicked * upon.* @author D.X. Nguyen */public class Frame2 extends AFrame { public Frame2(String title) {super(title); }protected void initialize() { Container cp = getContentPane();cp.setLayout(new FlowLayout());JButton jb1 = new JButton("Grid Layout"); JButton jb2 = new JButton("Flow Layout");cp.add(jb1); cp.add(jb2);pack(); /*** Registers an anonymous event handler for the clicking of button jb1. * When jb1 is clicked upon, this event handler will respond by* executing its actionPerformed(...) method. */jb1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) {jb1Clicked(e); }}); /*** Same as the above. */jb2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) {jb2Clicked(e); }}); }/** * Dynamically changes to a GridLayout with 2 rows and 1 column.*/ protected void jb1Clicked(ActionEvent e) {System.out.println("Set GridLayout..."); getContentPane().setLayout(new GridLayout(2,1));validate(); // forces this frame to re-layout. }/** * Dynamically changes to FlowLayout.*/ protected void jb2Clicked(ActionEvent e) {System.out.println("Set FlowLayout..."); getContentPane().setLayout(new FlowLayout());validate(); // forces this frame to re-layout. }}

Frame2app.java

package app; import javax.swing.*;import view.*; public class Frame2App {public static void main(String[] args) {JFrame f = new Frame2("A JFrame with 2 JButtons with event listeners"); f.setVisible(true);f.setSize(300, 100); // Guess what this does! f.setLocation(200, 200); // Guess what this does!// Forces the frame to re-layout its components: f.validate();} }

Frame3.java

package view; import java.awt.*;import java.awt.event.*; import javax.swing.*;/** * Same functionality as Frame2 but uses an adapter interface to communicate* with the outside world instead. This design allows varying the communication * with the outside world. How the outside world reacts to the events that* happen to the view is a variant behavior! * Uses the Null-Object Pattern to initialize the adapter avoiding checking for* null. * @author DXN*/ public class Frame3 extends Frame2 {// Initializes the adapter to a null object: private IView2World _v2wAdapter = new IView2World() {public Object button1Clicked (ActionEvent e) { return null; // does nothing!} public Object button2Clicked (ActionEvent e) {return null; // does nothing! }}; public Frame3(String title) {super(title); }public void setV2WAdapter(IView2World v2w) { if (null == v2w) {throw new IllegalArgumentException("Argument cannot be null!"); }_v2wAdapter = v2w; }/** * Tells _v2wAdapter the button click event happens on jb1.*/ protected void jb1Clicked(ActionEvent e) {_v2wAdapter.button1Clicked(e); }/** * Tells _v2wAdapter the button click event happens on jb2.*/ protected void jb2Clicked(ActionEvent e) {_v2wAdapter.button2Clicked(e); }}

Iview2world.java

package view; import java.awt.event.*;/** * Adapter connecting Frame3 (the View) to the outside world.*/ public interface IView2World {/** * Called by Frame3 when its button 1 is clicked.*/ public Object button1Clicked (ActionEvent e);/** * Called by Frame3 when its button 2 is clicked.*/ public Object button2Clicked (ActionEvent e);}

Frame3controller.java

package controller; import view.*;import java.awt.event.*; import javax.swing.JFrame;import java.awt.*; // For layout managers. /*** The controller that instantiates a concrete IView2World object and connects * the world outside of Frame3 (the view) to Frame3.* The concrete adapter is implemented as an anonymous inner classe. */public class Frame3Controller { public JFrame constructFrame() {// Local variable needs to be final so that the local inner class // can access it:final Frame3 frame = new Frame3("View and Controller"); /*** Install as concrete anonymous IView2World adapter in frame, without * frame knowing what the adapter does.*/ frame.setV2WAdapter(new IView2World() {public Object button1Clicked (ActionEvent e) { frame.getContentPane().setLayout(new GridLayout(2,1));frame.validate(); return null;} public Object button2Clicked (ActionEvent e) {frame.getContentPane().setLayout(new FlowLayout()); frame.validate();return null; }}); frame.setVisible(true);return frame; }}

Frame3app.java

package app; import view.*;import controller.*; /*** Instantiates the controller and builds the frame! */public class Frame3App { public static void main(String[]args) { new Frame3Controller().constructFrame().validate();} }

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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Source:  OpenStax, Principles of object-oriented programming. OpenStax CNX. May 10, 2013 Download for free at http://legacy.cnx.org/content/col10213/1.37
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