Combined with your specific situation and the characteristics of our 1Z0-804 Reliable Examcollection exam questions, our professional services will recommend the most suitable version of 1Z0-804 Reliable Examcollection study materials for you. We introduce a free trial version of the 1Z0-804 Reliable Examcollection learning guide because we want users to see our sincerity. 1Z0-804 Reliable Examcollection exam prep sincerely hopes that you can achieve your goals and realize your dreams. We always strictly claim for our 1Z0-804 Reliable Examcollection study materials must be the latest version, to keep our study materials up to date, we constantly review and revise them to be at par with the latest Oracle syllabus for 1Z0-804 Reliable Examcollection exam. This feature has been enjoyed by over 80,000 takes whose choose our study materials. Don't worry about channels to the best 1Z0-804 Reliable Examcollection study materials so many exam candidates admire our generosity of offering help for them.
Java and Middleware 1Z0-804 In fact, you do not need other reference books.
Omgzlook follows the career ethic of providing the first-class 1Z0-804 - Java SE 7 Programmer II Exam Reliable Examcollection practice questions for you. Through the learning materials and exam practice questions and answers provided by Omgzlook, we can ensure you have a successful challenge when you are the first time to participate in the Oracle certification Valid Test 1Z0-804 Discount Voucher exam. Above all, using Omgzlook you do not spend a lot of time and effort to prepare for the exam.
Just come to buy our 1Z0-804 Reliable Examcollection learning guide and you will love it. 1Z0-804 Reliable Examcollection study materials can expedite your review process, inculcate your knowledge of the exam and last but not the least, speed up your pace of review dramatically. The finicky points can be solved effectively by using our 1Z0-804 Reliable Examcollection exam questions.
Oracle 1Z0-804 Reliable Examcollection - They believe and rely on us.
We have handled professional 1Z0-804 Reliable Examcollection practice materials for over ten years. Our experts have many years’ experience in this particular line of business, together with meticulous and professional attitude towards jobs. Their abilities are unquestionable, besides, 1Z0-804 Reliable Examcollection exam questions are priced reasonably with three kinds: the PDF, Software and APP online. Though the content is the same, but their displays are totally different and functionable.
In order to prevent your life from regret and remorse, you should seize every opportunity which can change lives passibly. Did you do it? Omgzlook's Oracle 1Z0-804 Reliable Examcollection exam training materials can help you to achieve your success.
1Z0-804 PDF DEMO:
QUESTION NO: 1
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: 2
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: 3
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: 4
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: 5
Given the code fragment:
What is the result?
A.Java 7
B.Java 6
C.Java 7, Java 6
D.Java 7 java 6
E.Java
Answer: C
Explanation:
regex: Java / one or more anything !!! / ends with a digit so it is the source string
They are time-tested Microsoft MS-721 learning materials, so they are classic. IBM C1000-065 - So that you will have the confidence to win the exam. Microsoft MB-230 - We have tried our best to find all reference books. ACAMS CAMS-CN - Do you feel headache looking at so many IT certification exams and so many exam materials? What should you do? Which materials do you choose? If you don't know how to choose, I choose your best exam materials for you. Cisco 500-490 - If you are interested in our products, I believe that after your trial, you will certainly not hesitate to buy it.
Updated: May 28, 2022