If you choose Omgzlook study guide, you will find the test questions and test answers are certainly different and high-quality, which is the royal road to success. And then, the dumps will help you prepare well enough for 1Z0-804 Questions Exam exam. The opportunity always belongs to a person who has the preparation. So our Omgzlook will provide a exam simulation for you to experience the real exam model before real exam. 1Z0-804 Questions Exam exam simulation software is full of questions, which will improve your ability to face the exam after you exercise them. And with the aid of 1Z0-804 Questions Exam certification test, you can improve your skills and master some useful techniques in your job so that you can finish your work better and demonstrate your great ability before other people.
Java and Middleware 1Z0-804 PDF version is easy for read and print out.
Omgzlook is a reliable site offering the 1Z0-804 - Java SE 7 Programmer II Exam Questions Exam valid study material supported by 100% pass rate and full money back guarantee. Once you have well prepared with our 1Z0-804 Exam Dumps Demo dumps collection, you will go through the formal test without any difficulty. To help people pass exam easily, we bring you the latest 1Z0-804 Exam Dumps Demo exam prep for the actual test which enable you get high passing score easily in test.
Our website aimed to help you to get through your certification test easier with the help of our valid 1Z0-804 Questions Exam vce braindumps. You just need to remember the answers when you practice 1Z0-804 Questions Exam real questions because all materials are tested by our experts and professionals. Our 1Z0-804 Questions Exam study guide will be your first choice of exam materials as you just need to spend one or days to grasp the knowledge points of 1Z0-804 Questions Exam practice exam.
Oracle 1Z0-804 Questions Exam - Never has our practice test let customers down.
In order to evaluate the performance in the real exam like environment, the candidates can easily purchase our quality 1Z0-804 Questions Exam preparation software. Our 1Z0-804 Questions Exam} exam software will test the skills of the customers in a virtual exam like situation and will also highlight the mistakes of the candidates. The free 1Z0-804 Questions Exam exam updates feature is one of the most helpful features for the candidates to get their preparation in the best manner with latest changes. The Oracle introduces changes in the 1Z0-804 Questions Exam format and topics, which are reported to our valued customers. In this manner, a constant update feature is being offered to 1Z0-804 Questions Exam exam customers.
Second, you can get our 1Z0-804 Questions Exam practice dumps only in 5 to 10 minutes after payment, which enables you to devote yourself to study as soon as possible. Last but not least, you will get the privilege to enjoy free renewal of our 1Z0-804 Questions Exam preparation materials during the whole year.
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 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: 3
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: 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
The sooner you download and use SAP C-THR82-2405 training materials the sooner you get the SAP C-THR82-2405 certificate. The sooner you use Lpi 701-100 training materials, the more chance you will pass the Lpi 701-100 exam, and the earlier you get your certificate. SAP C-THR85-2405 study guides will prove their worth and excellence. Both of the content and the displays are skillfully design on the purpose that EMC D-PDD-OE-23 actual exam can make your learning more targeted and efficient. You can always prepare for the PECB ISO-IEC-27001-Lead-Auditor-KR test whenever you find free time with the help of our PECB ISO-IEC-27001-Lead-Auditor-KR PDF dumps.
Updated: May 28, 2022