Through the use of a lot of candidates, Omgzlook's Oracle 1Z0-804 Reliable Practice Exam Online exam training materials is get a great response aroud candidates, and to establish a good reputation. This is turn out that select Omgzlook's Oracle 1Z0-804 Reliable Practice Exam Online exam training materials is to choose success. Someone asked, where is success? Then I tell you, success is in Omgzlook. One strong point of our APP online version is that it is convenient for you to use our 1Z0-804 Reliable Practice Exam Online exam dumps even though you are in offline environment. In other words, you can prepare for your 1Z0-804 Reliable Practice Exam Online exam with under the guidance of our 1Z0-804 Reliable Practice Exam Online training materials anywhere at any time. Are you a brave person? If you did not do the best preparation for your IT certification exam, can you take it easy? Yes, of course.
Java and Middleware 1Z0-804 We provide one –year free updates; 3.
You will change a lot after learning our 1Z0-804 - Java SE 7 Programmer II Exam Reliable Practice Exam Online study materials. If you master all key knowledge points, you get a wonderful score. If you choose our Online 1Z0-804 Tests exam review questions, you can share fast download.
There is no doubt that the certification has become more and more important for a lot of people, especial these people who are looking for a good job, and it has been a general trend. More and more workers have to spend a lot of time on meeting the challenge of gaining the 1Z0-804 Reliable Practice Exam Online certification by sitting for an exam. It is known to us that more and more companies start to pay high attention to the 1Z0-804 Reliable Practice Exam Online certification of the candidates.
Oracle 1Z0-804 Reliable Practice Exam Online - And your life will become better and better.
Our 1Z0-804 Reliable Practice Exam Online practice dumps is high quality product revised by hundreds of experts according to the changes in the syllabus and the latest developments in theory and practice, it is focused and well-targeted, so that each student can complete the learning of important content in the shortest time. With 1Z0-804 Reliable Practice Exam Online training prep, you only need to spend 20 to 30 hours of practice before you take the 1Z0-804 Reliable Practice Exam Online exam.
We have faith in our professional team and our 1Z0-804 Reliable Practice Exam Online study tool, and we also wish you trust us wholeheartedly. Our 1Z0-804 Reliable Practice Exam Online test torrent keep a look out for new ways to help you approach challenges and succeed in passing the Java SE 7 Programmer II Exam exam.
1Z0-804 PDF DEMO:
QUESTION NO: 1
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: 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 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
Cisco 350-401 - Oracle Certification exams are essential to move ahead, because being certified professional a well-off career would be in your hand. Our SAP C_ARP2P_2404 study materials have the high pass rate as 98% to 100%, hope you can use it fully and pass the exam smoothly. We have organized a group of professionals to revise CompTIA PT0-002 preparation materials, according to the examination status and trend changes in the industry, tailor-made for the candidates. There is an irreplaceable trend that an increasingly amount of clients are picking up VMware 2V0-32.24 study materials from tremendous practice materials in the market. EMC D-MSS-DS-23 - So just come and have a try!
Updated: May 28, 2022