The language in our 1Z0-804 Exam Name test guide is easy to understand that will make any learner without any learning disabilities, whether you are a student or a in-service staff, whether you are a novice or an experienced staff who has abundant experience for many years. Our Java SE 7 Programmer II Exam exam questions are applicable for everyone in all walks of life which is not depends on your educated level. Therefore, no matter what kind of life you live, no matter how much knowledge you have attained already, it should be a great wonderful idea to choose our 1Z0-804 Exam Name guide torrent for sailing through the difficult test. Our 1Z0-804 Exam Name actual exam comprise of a number of academic questions for your practice, which are interlinked and helpful for your exam. And there are all key points in the 1Z0-804 Exam Name exam questions. After you buy the PDF version of our 1Z0-804 Exam Name study material, you will get an E-mail form us in 5 to 10 minutes after payment.Once any new question is found, we will send you a link to download a new version of the 1Z0-804 Exam Name training engine.
1Z0-804 Exam Name study material is suitable for all people.
Besides, our company's website purchase process holds security guarantee, so you needn’t be anxious about download and install our 1Z0-804 - Java SE 7 Programmer II Exam Exam Name exam questions. So a wise and diligent person should absorb more knowledge when they are still young. At present, our 1Z0-804 Review Guide study prep has gained wide popularity among different age groups.
From the customers’ point of view, our 1Z0-804 Exam Name test question put all candidates’ demands as the top priority. We treasure every customer’ reliance and feedback to the optimal 1Z0-804 Exam Name practice test. Considering all customers’ sincere requirements, 1Z0-804 Exam Name test question persist in the principle of “Quality First and Clients Supreme” all along and promise to our candidates with plenty of high-quality products, considerate after-sale services as well as progressive management ideas.
Oracle 1Z0-804 Exam Name - So you can take a best preparation for the exam.
Every detail of our 1Z0-804 Exam Name exam guide is going through professional evaluation and test. Other workers are also dedicated to their jobs. Even the proofreading works of the 1Z0-804 Exam Name study materials are complex and difficult. They still attentively accomplish their tasks. Please have a try and give us an opportunity. Our 1Z0-804 Exam Name preparation quide will totally amaze you and bring you good luck. And it deserves you to have a try!
Omgzlook's training tool has strong pertinence, which can help you save a lot of valuable time and energy to pass IT certification exam. Our exercises and answers and are very close true examination questions.
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
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: 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
Our OMSB OMSB_OEN study materials absolutely can add more pleasure to your life. SAP C_TS4FI_2023 - If these training products do not help you pass the exam, we guarantee to refund the full purchase cost. If you attach great importance to the protection of personal information and want to choose a very high security product, EC-COUNCIL 312-38 real exam is definitely your first choice. Cisco 350-401 - But they need a lot of time to participate in the certification exam training courses. Amazon SAA-C03 - Each of us is dreaming of being the best, but only a few people take that crucial step.
Updated: May 28, 2022