If you find any quality problems of our 1Z0-804 Exam Syllabus or you do not pass the exam, we will unconditionally full refund. Omgzlook is professional site that providing Oracle 1Z0-804 Exam Syllabus questions and answers , it covers almost the 1Z0-804 Exam Syllabus full knowledge points. We really take the requirements of our worthy customers into account. Perhaps you know nothing about our 1Z0-804 Exam Syllabus study guide. You can also use the extra time and effort to earn more money.
Java and Middleware 1Z0-804 If you do not give up, the next second is hope.
Java and Middleware 1Z0-804 Exam Syllabus - Java SE 7 Programmer II Exam Although we might come across many difficulties during pursuing our dreams, we should never give up. According to the survey, the candidates most want to take Oracle 1Z0-804 Valid Test Simulator Online test in the current IT certification exams. Of course, the Oracle 1Z0-804 Valid Test Simulator Online certification is a very important exam which has been certified.
It has been widely recognized that the 1Z0-804 Exam Syllabus exam can better equip us with a newly gained personal skill, which is crucial to individual self-improvement in today’s computer era. With the certified advantage admitted by the test Oracle certification, you will have the competitive edge to get a favorable job in the global market. Here our 1Z0-804 Exam Syllabus study materials are tailor-designed for you.
Oracle 1Z0-804 Exam Syllabus - Everyone wants to succeed.
It is known to us that to pass the 1Z0-804 Exam Syllabus exam is very important for many people, especially who are looking for a good job and wants to have a 1Z0-804 Exam Syllabus certification. Because if you can get a certification, it will be help you a lot, for instance, it will help you get a more job and a better title in your company than before, and the 1Z0-804 Exam Syllabus certification will help you get a higher salary. We believe that our company has the ability to help you successfully pass your exam and get a 1Z0-804 Exam Syllabus certification by our 1Z0-804 Exam Syllabus exam torrent.
As a prestigious platform offering practice material for all the IT candidates, Omgzlook experts try their best to research the best valid and useful Oracle 1Z0-804 Exam Syllabus exam dumps to ensure you 100% pass. The contents of 1Z0-804 Exam Syllabus exam training material cover all the important points in the 1Z0-804 Exam Syllabus actual test, which can ensure the high hit rate.
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
However, since there was lots of competition in this industry, the smartest way to win the battle is improving the quality of our SAP C_THR97_2405 learning materials, which we did a great job. The SAP C_THR87_2405 vce torrent will be the best and valuable study tool for your preparation. Do you feel aimless and helpless when the Adobe AD0-E906 exam is coming soon? If your answer is absolutely yes, then we would like to suggest you to try our Adobe AD0-E906 training materials, which are high quality and efficiency test tools. you can download any time if you are interested in our CIMA CIMAPRO19-CS3-1 dumps torrent. Therefore that adds more confidence for you to make a full preparation of the upcoming SAP C-S4FCF-2023 exam.
Updated: May 28, 2022