Getting an authoritative IT certification will make a great difference to your career like 1Z0-804 Reliable Study Questions Pdf exam tests. The difficulty and profession of real questions need much time and energy to prepare, which can be solved by our 1Z0-804 Reliable Study Questions Pdf dumps torrent. The latest training materials are tested by IT experts and certified trainers who studied 1Z0-804 Reliable Study Questions Pdf exam questions for many years. So stop idling away your precious time and begin your review with the help of our 1Z0-804 Reliable Study Questions Pdf learning quiz as soon as possible, and you will pass the exam in the least time. With precious time passing away, many exam candidates are making progress with high speed and efficiency with the help of our 1Z0-804 Reliable Study Questions Pdf study guide. As a professional dumps vendors, we provide the comprehensive 1Z0-804 Reliable Study Questions Pdf pass review that is the best helper for clearing 1Z0-804 Reliable Study Questions Pdf actual test, and getting the professional certification quickly.
Come and buy our 1Z0-804 Reliable Study Questions Pdf exam questions!
The 1Z0-804 - Java SE 7 Programmer II Exam Reliable Study Questions Pdf certification exam training tools contains the latest studied materials of the exam supplied by IT experts. And after using our 1Z0-804 Valid Exam Questions learning prep, they all have marked change in personal capacity to deal with the 1Z0-804 Valid Exam Questions exam intellectually. The world is full of chicanery, but we are honest and professional in this area over ten years.
The industrious Omgzlook's IT experts through their own expertise and experience continuously produce the latest Oracle 1Z0-804 Reliable Study Questions Pdf training materials to facilitate IT professionals to pass the Oracle certification 1Z0-804 Reliable Study Questions Pdf exam. The certification of Oracle 1Z0-804 Reliable Study Questions Pdf more and more valuable in the IT area and a lot people use the products of Omgzlook to pass Oracle certification 1Z0-804 Reliable Study Questions Pdf exam. Through so many feedbacks of these products, our Omgzlook products prove to be trusted.
Oracle 1Z0-804 Reliable Study Questions Pdf - Then you can learn and practice it.
Like the real exam, Omgzlook Oracle 1Z0-804 Reliable Study Questions Pdf exam dumps not only contain all questions that may appear in the actual exam, also the SOFT version of the dumps comprehensively simulates the real exam. With Omgzlook real questions and answers, when you take the exam, you can handle it with ease and get high marks.
As the quick development of the world economy and intense competition in the international, the world labor market presents many new trends: company’s demand for the excellent people is growing. As is known to us, the 1Z0-804 Reliable Study Questions Pdf certification is one mainly mark of the excellent.
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 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: 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
Our Dell D-PWF-RDY-A-00 exam software offers comprehensive and diverse questions, professional answer analysis and one-year free update service after successful payment; with the help of our Dell D-PWF-RDY-A-00 exam software, you can improve your study ability to obtain Dell D-PWF-RDY-A-00 exam certification. Our Cisco 300-610 training materials are compiled carefully with correct understanding of academic knowledge using the fewest words to express the most clear ideas, rather than unnecessary words expressions or sentences and try to avoid out-of-date words. HashiCorp TA-003-P - In order to reduce more stress for you, we promise you if you fail the exam, what you need to do is to send your scanned unqualified transcripts to our email box. By the trial demo provided by our company, you will have the opportunity to closely contact with our Microsoft DP-300 exam torrent, and it will be possible for you to have a view of our products. EMC D-NWG-DS-00 - The latest information of these tests can be found in our Omgzlook.
Updated: May 28, 2022