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The book is published by Packt Publishing:
http://www.packtpub.com/java-ee-7-performance-tuning-and-optimization/book
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---
My name is Anton, and I’m an IntelliJ IDEA addict. Whew, it feels good to say it out loud. The choice of IDE for developers is one of the most contentious debates in the software game. But why? After all, aren’t all IDEs more or less the same?
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For the full report, check it out on RebelLabs:
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**Note: This is a sneak preview of the full report, which you can get on RebelLabs: http://zeroturnaround.com/rebellabs/getting-started-with-intellij-idea-as-an-eclipse-user/
---
My name is Anton, and I’m an IntelliJ IDEA addict. Whew, it feels good to say it out loud. The choice of IDE for developers is one of the most contentious debates in the software game. But why? After all, aren’t all IDEs more or less the same?
Perhaps you are Eclipse users who are interested in trying out IntelliJ IDEA, or perhaps considering the migration. Moving from Eclipse to IDEA can be quite overwhelming. My main purpose in writing this report is to show Eclipse users, specifically, how to get started using IDEA faster and with less headaches.
For the full report, check it out on RebelLabs:
http://zeroturnaround.com/rebellabs/getting-started-with-intellij-idea-as-an-eclipse-user/
Understand about what JSON is
Understand the difference between JSON and XML
Understand the context of using JSON with AJAX
Know how to read and write JSON data using PHP
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Generar description
IoC container
Dependency Injection
Beans scope and lifecycle
Autowiring
XML and annotation based configuration
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I plan to extend and enhance it over time.
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Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
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Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
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Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
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In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
3. 3
Intent
Allow an object to alter its behaviour
when its internal state changes. The
object will appear to change its class.
Also known as
Objects for states
4. 4
Example: Cell cycle
Our system has 5 states:
Start
Interphase
Mitosis
Cytokinesis
End
It has 2 events:
advance
grow
6. 6
public class Cell {
private CellState state = new StartState();
public void grow() {
state.grow(this);
}
public void advance() {
state.advance(this);
}
// Package-private
void setState(CellState newState) {
if (state != newState) {
System.out.println(toString(state) + " -> " + toString(newState));
state = newState;
}
}
7. 7
interface CellState {
/** @throws IllegalStateException*/
public void grow(Cell cell);
/** @throws IllegalStateException*/
public void advance(Cell cell);
}
class StartState implements CellState {
public void grow(Cell cell) {
throw new IllegalStateException();
}
public void advance(Cell cell) {
cell.setState(new InterphaseState());
}
}
8. 8
class InterphaseState implements CellState {
public void grow(Cell cell) {
cell.makeProtein();
}
public void advance(Cell cell) {
cell.replicateDNA();
cell.setState(new MitosisState());
}
}
9. 9
class MitosisState implements CellState {
public void grow(Cell cell) {
throw new IllegalStateException();
}
public void advance(Cell cell) {
cell.divideNucleus();
cell.setState(new CytokinesisState());
}
}
10. 10
class CytokinesisState implements CellState {
public void grow(Cell cell) {
throw new IllegalStateException();
}
public void advance(Cell cell) {
cell.divideCytoplasm();
cell.setState(new EndState());
}
}
11. 11
class EndState implements CellState {
public void grow(Cell cell) {
throw new IllegalStateException("Dead cells can't grow");
}
public void advance(Cell cell) {
throw new IllegalStateException("Dead cells can't advance");
}
}
12. 12
public class TestCell {
public static void main(String[] args) {
Cell cell = new Cell();
cell.advance(); // Interphase
cell.grow();
cell.grow();
cell.advance(); // Mitosis
cell.advance(); // Cytokinesis
cell.advance(); // End
cell.grow(); // error
}
}
13. 13
Applicability
Use the State pattern when
An object's behaviour depends on its
state and must change its behaviour at
run-time depending on that state
Operations have large, multipart
conditional statements that depend on
the object's state, typically switch or
if-else-if constructs
19. 19
Solution
Use an abstract class for common
functionality (but in general we “favor
composition over inheritance” - see the
Strategy pattern)
Start state is transitional, so we can skip it.
21. 21
Alternative solution
Could instead let the state's methods return the
new state
Advantages:
No dependency between FrogState and Frog
(looser coupling)
setState is private in Frog
23. 23
public class Frog {
private FrogState state = new EmbryoState();
public void develop() {
setState(state.develop());
}
public void eat() {
setState(state.eat());
}
public void die() {
setState(state.die());
}
private void setState(FrogState newState) {
if (state != newState) {
System.out.println(state + " -> " + newState);
state = newState;
24. 24
abstract class FrogState {
public FrogState develop() {
throw new IllegalStateException();
}
public FrogState eat() {
throw new IllegalStateException();
}
public FrogState die() {
return new EndState();
}
}
25. 25
class EmbryoState extends FrogState {
public FrogState develop() {
return new TadpoleState();
}
}
class TadpoleState extends FrogState {
public FrogState develop() {
return new AdultState();
}
public FrogState eat() {
System.out.println("Eating algae.");
return this;
}
}
26. 26
class AdultState extends FrogState {
public FrogState eat() {
System.out.println("Eating flies.");
return this;
}
}
class EndState extends FrogState {
public FrogState die() {
throw new IllegalStateException("Dead frogs can't die.");
}
}
27. 27
public class TestFrog {
public static void main(String[] args) {
Frog frog = new Frog(); // Embryo
frog.develop(); // Tadpole
frog.eat();
frog.develop(); // Adult
frog.eat();
frog.eat();
frog.die(); // Dead frog
frog.die(); // Error
}
}
28. 28
import junit.framework.TestCase;
public class EmbryoStateTest extends TestCase {
public void testDevelop() {
FrogState state = new EmbryoState();
FrogState nextState = state.develop();
assertEquals(TadpoleState.class, nextState.getClass());
}
public void testEat() {
FrogState state = new EmbryoState();
try {
FrogState nextState = state.eat();
fail("Embryos can't eat.");
}
catch (Exception e) {
assertEquals(IllegalStateException.class, e.getClass());
29. 29
import junit.framework.TestCase;
public class TadpoleStateTest extends TestCase {
public void testEat() {
FrogState state = new TadpoleState();
FrogState nextState = state.eat();
assertEquals(TadpoleState.class, nextState.getClass());
}
public void testDevelop() {
FrogState state = new TadpoleState();
FrogState nextState = state.develop();
assertEquals(AdultState.class, nextState.getClass());
}
public void testDie() {
FrogState state = new TadpoleState();
FrogState nextState = state.die();