Improving your efficiency and saving your time has always been the goal of our 1Z0-804 Exam Sample Online preparation exam. If you are willing to try our 1Z0-804 Exam Sample Online study materials, we believe you will not regret your choice. With our 1Z0-804 Exam Sample Online practice engine for 20 to 30 hours, we can claim that you will be quite confident to attend you exam and pass it for sure for we have high pass rate as 98% to 100% which is unmatched in the market. Now, let’s prepare for the exam test with the 1Z0-804 Exam Sample Online training pdf offered by Omgzlook. 1Z0-804 Exam Sample Online online test engine is selected by many candidates because of its intelligence and interactive features. We provide 3 versions for the clients to choose based on the consideration that all the users can choose the most suitable version to learn.
Java and Middleware 1Z0-804 Also, we have benefited from such good behavior.
Java and Middleware 1Z0-804 Exam Sample Online - Java SE 7 Programmer II Exam This ensures that you will cover more topics thus increasing your chances of success. It is a generally accepted fact that the 1Z0-804 Exam Test exam has attracted more and more attention and become widely acceptable in the past years. Are you worried about you poor life now and again? Are you desired to gain a decent job in the near future? Do you dream of a better life? Do you want to own better treatment in the field? If your answer is yes, please prepare for the 1Z0-804 Exam Test exam.
All the necessary points have been mentioned in our 1Z0-804 Exam Sample Online practice engine particularly. About some tough questions or important points, they left notes under them. Besides, our experts will concern about changes happened in 1Z0-804 Exam Sample Online study prep all the time.
Oracle 1Z0-804 Exam Sample Online - The dynamic society prods us to make better.
Our 1Z0-804 Exam Sample Online study materials have a professional attitude at the very beginning of its creation. The series of 1Z0-804 Exam Sample Online measures we have taken is also to allow you to have the most professional products and the most professional services. I believe that in addition to our 1Z0-804 Exam Sample Online exam questions, you have also used a variety of products. We believe if you compare our 1Z0-804 Exam Sample Online training guide with the others, you will choose ours at once.
As we know, our products can be recognized as the most helpful and the greatest 1Z0-804 Exam Sample Online study engine across the globe. Even though you are happy to hear this good news, you may think our price is higher than others.
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 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: 3
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: 4
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
QUESTION NO: 5
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.
Users can learn the latest and latest test information through our BCS CTFL4 test dumps. Welcome your purchase for our ISACA IT-Risk-Fundamentals exam torrent. At the same time, as long as the user ensures that the network is stable when using our Palo Alto Networks PCNSA training materials, all the operations of the learning material of can be applied perfectly. The content of our APMG-International Better-Business-Cases-Practitioner study materials has always been kept up to date. IAM IAM-Certificate - You will also get more salary, and then you can provide a better life for yourself and your family.
Updated: May 28, 2022