If you have any question about 1Z0-804 Demo exam software or other exam materials, or any problem about how to purchase our products, you can contact our online customer service directly. Besides, during one year after you purchased our 1Z0-804 Demo exam software, any update of 1Z0-804 Demo exam software will be sent to your mailbox the first time. As a reliable company providing professional IT certificate exam materials, we not only provide quality guaranteed products for 1Z0-804 Demo exam software, but also offer high quality pre-sale and after-sale service. By adding all important points into practice materials with attached services supporting your access of the newest and trendiest knowledge, our 1Z0-804 Demo preparation materials are quite suitable for you right now as long as you want to pass the 1Z0-804 Demo exam as soon as possible and with a 100% pass guarantee. Our 1Z0-804 Demo study questions are so popular that everyday there are numerous of our loyal customers wrote to inform and thank us that they passed their exams for our exam braindumps. Our Omgzlook technical team have developed the 1Z0-804 Demo exam review materials in accordance with the memory learning design concept, which will relieve your pressure from the preparation for 1Z0-804 Demo exam with scientific methods.
Java and Middleware 1Z0-804 Then join our preparation kit.
Despite the intricate nominal concepts, 1Z0-804 - Java SE 7 Programmer II Exam Demo exam dumps questions have been streamlined to the level of average candidates, pretense no obstacles in accepting the various ideas. What most useful is that PDF format of our 1Z0-804 Reliable Test Guide Files exam materials can be printed easily, you can learn it everywhere and every time you like. It is really convenient for candidates who are busy to prepare the exam.
Our 1Z0-804 Demo exam dumps are efficient, which our dedicated team keeps up-to-date. If you are really intended to pass and become Oracle 1Z0-804 Demo exam certified then enrolled in our preparation program today and avail the intelligently designed actual questions. Omgzlook is the best platform, which offers braindumps for 1Z0-804 Demo Certification exam duly prepared by experts.
Oracle 1Z0-804 Demo - The results are accurate.
We promise during the process of installment and payment of our Java SE 7 Programmer II Exam prep torrent, the security of your computer or cellphone can be guaranteed, which means that you will be not afraid of virus intrusion and personal information leakage. Besides we have the right to protect your email address and not release your details to the 3rd parties. Moreover if you are not willing to continue our 1Z0-804 Demo test braindumps service, we would delete all your information instantly without doubt. The main reason why we try our best to protect our customers’ privacy is that we put a high value on the reliable relationship and mutual reliance to create a sustainable business pattern.
The price is set reasonably. Up to now, we have successfully issued three packages for you to choose.
1Z0-804 PDF DEMO:
QUESTION NO: 1
Which two properly implement a Singleton pattern?
A.class Singleton {
private static Singleton instance;
private Singleton () {}
public static synchronized Singleton getInstance() {
if (instance == null) {
instance = new Singleton ();
}
return instance;
}
}
B.class Singleton {
private static Singleton instance = new Singleton();
protected Singleton () {}
public static Singleton getInstance () {
return instance;
}
}
C.class Singleton {
Singleton () {}
private static class SingletonHolder {
private static final Singleton INSTANCE = new Singleton ();
}
public static Singleton getInstance () {
return SingletonHolder.INSTANCE; } }
D.enum Singleton {
INSTANCE;
}
Answer: A,D
Explanation:
A: Here the method for getting the reference to the SingleTon object is correct.
B: The constructor should be private
C: The constructor should be private
Note: Java has several design patterns Singleton Pattern being the most commonly used. Java
Singleton pattern belongs to the family of design patterns, that govern the instantiation process. This design pattern proposes that at any time there can only be one instance of a singleton (object) created by the JVM.
The class's default constructor is made private, which prevents the direct instantiation of the object by others (Other Classes). A static modifier is applied to the instance method that returns the object as it then makes this method a class level method that can be accessed without creating an object.
OPTION A == SHOW THE LAZY initialization WITHOUT DOUBLE CHECKED LOCKING TECHNIQUE ,BUT
ITS CORRECT OPTION D == Serialzation and thraead-safety guaranteed and with couple of line of code enum Singleton pattern is best way to create Singleton in Java 5 world.
AND THERE ARE 5 WAY TO CREATE SINGLETON CLASS IN JAVA 1>>LAZY LOADING (initialization)
USING SYCHRONIZATION 2>>CLASS LOADING (initialization) USING private static final Singleton instance = new
Singleton(); 3>>USING ENUM 4>>USING STATIC NESTED CLASS
5>>USING STATIC BLOCK
AND MAKE CONSTRUCTOR PRIVATE IN ALL 5 WAY.
QUESTION NO: 2
Given the fragment: If thread a and thread b are running, but not completing, which two could be occurring?
A.livelock
B.deadlock
C.starvation
D.loose coupling
E.cohesion
Answer: A,B
Explanation:
A: A thread often acts in response to the action of another thread. If the other thread's action is also a response to the action of another thread, then livelock may result. A thread often acts in response to the action of another thread. If the other thread's action is also a response to the action of another thread, then livelock may result.
B: Deadlock describes a situation where two or more threads are blocked forever, waiting for each other.
QUESTION NO: 3
Given the code fragment:
What is the result?
A.Null B D
B.Null B null D
C.B D
D.D
E.An exception is thrown at runtime
Answer: C
QUESTION NO: 4
Given:
Which two are true?
A.A runtime exception is thrown on line 9.
B.No output is produced.
C.Greeting is printed once.
D.Greeting is printed twice.
E.No new threads of execution are started within the main method.
F.One new thread of execution is started within the main method.
G.Two new threads of execution are started within the main method.
Answer: C,E
Explanation:
Thread t2 is executed. Execution of T2 starts executionen of t1. Greeting is printed during the execution of t1.
QUESTION NO: 5
Given the code fragment:
What is the result?
A.getName (0): C:\
subpath (0, 2): C:\education\report.txt
B.getName(0): C:\ subpth(0, 2): C:\education
C.getName(0): education subpath (0, 2): education\institute
D.getName(0): education subpath(0, 2): education\institute\student
E.getName(0): report.txt subpath(0, 2): insritute\student
Answer: C
Explanation:
Example:
Path path = Paths.get("C:\\home\\joe\\foo");
getName(0)
-> home
subpath(0,2)
Reference: The Java Tutorial, Path Operations
With many advantages such as immediate download, simulation before the real exam as well as high degree of privacy, our Microsoft AZ-800 actual exam survives all the ordeals throughout its development and remains one of the best choices for those in preparation for Microsoft AZ-800 exam. However, how to pass Oracle certification Huawei H13-311_V3.5 exam quickly and simply? Our Omgzlook can always help you solve this problem quickly. Lpi 306-300 - The world is full of chicanery, but we are honest and professional in this area over ten years. ISACA CISA - Through so many feedbacks of these products, our Omgzlook products prove to be trusted. As long as you have questions on the HP HPE7-M01 learning braindumps, just contact us!
Updated: May 28, 2022