Imagine, if you're using a 1Z0-804 Test Answers practice materials, always appear this or that grammar, spelling errors, such as this will not only greatly affect your mood, but also restricted your learning efficiency. Therefore, good typesetting is essential for a product, especially education products, and the 1Z0-804 Test Answers test material can avoid these risks very well. A good learning platform should not only have abundant learning resources, but the most intrinsic things are very important, and the most intuitive things to users are also indispensable. All in all, high efficiency of 1Z0-804 Test Answers exam material is the reason for your selection. We understand our candidates have no time to waste, everyone wants an efficient learning. We boost a professional expert team to undertake the research and the production of our 1Z0-804 Test Answers learning file.
Java and Middleware 1Z0-804 So Omgzlook a website worthy of your trust.
Java and Middleware 1Z0-804 Test Answers - Java SE 7 Programmer II Exam The high pass rate of our study materials means that our products are very effective and useful for all people to pass their exam and get the related certification. 1Z0-804 New Dumps Sheet study materials including the official Oracle 1Z0-804 New Dumps Sheet certification training courses, Oracle 1Z0-804 New Dumps Sheet self-paced training guide, 1Z0-804 New Dumps Sheet exam Omgzlook and practice, 1Z0-804 New Dumps Sheet online exam 1Z0-804 New Dumps Sheet study guide. 1Z0-804 New Dumps Sheet simulation training package designed by Omgzlook can help you effortlessly pass the exam.
Remember this version support Windows system users only. App online version-Be suitable to all kinds of equipment or digital devices. Be supportive to offline exercise on the condition that you practice it without mobile data.
Oracle Oracle 1Z0-804 Test Answers exam is a Technical Specialist exam.
We all well know the status of Oracle certification 1Z0-804 Test Answers exams in the IT area is a pivotal position, but the key question is to be able to get Oracle 1Z0-804 Test Answers certification is not very simple. We know very clearly about the lack of high-quality and high accuracy exam materials online. Exam practice questions and answers Omgzlook provide for all people to participate in the IT industry certification exam supply all the necessary information. Besides, it can all the time provide what you want. Buying all our information can guarantee you to pass your first Oracle certification 1Z0-804 Test Answers exam.
As we all know, in the era of the popularity of the Internet, looking for information is a very simple thing. But a lot of information are lack of quality and applicability.
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
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: 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 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
Having a Oracle EMC D-RP-DY-A-24 certification can enhance your employment prospects,and then you can have a lot of good jobs. IAPP CIPT - This is indeed true, no doubt, do not consider, act now. Docker DCA - With Omgzlook's help, you do not need to spend a lot of money to participate in related cram or spend a lot of time and effort to review the relevant knowledge, but can easily pass the exam. Salesforce Salesforce-Data-Cloud test is one of the most important exams and the certificate will bring you benefits. Are you still worrying about how to safely pass Oracle certification EMC D-GAI-F-01 exams? Do you have thought to select a specific training? Choosing a good training can effectively help you quickly consolidate a lot of IT knowledge, so you can be well ready for Oracle certification EMC D-GAI-F-01 exam.
Updated: May 28, 2022