After all, everyone wants to be treated warmly and kindly, and hope to learn in a more pleasant mood. The authoritative, efficient, and thoughtful service of 1Z0-804 Exam Topics Pdf learning question will give you the best user experience, and you can also get what you want with our} study materials. I hope our study materials can accompany you to pursue your dreams. You can practice the questions on practice software in simulated real 1Z0-804 Exam Topics Pdf exam scenario or you can use simple PDF format to go through all the real 1Z0-804 Exam Topics Pdf exam questions. Our products are better than all the cheap 1Z0-804 Exam Topics Pdf Exam braindumps you can find elsewhere, try free demo. Now I will tell you responsibly that our payment method of 1Z0-804 Exam Topics Pdf exam materials is very secure.
Java and Middleware 1Z0-804 This is really amazing.
Java and Middleware 1Z0-804 Exam Topics Pdf - Java SE 7 Programmer II Exam And we will let you down. From the view of specialized examination point, it is necessary to teach you tips about the exam. You need to outsmart, and do not give your future the chance of failure.
The learning of our 1Z0-804 Exam Topics Pdf study materials costs you little time and energy and we update them frequently. We can claim that you will be ready to write your exam after studying with our 1Z0-804 Exam Topics Pdf exam guide for 20 to 30 hours. To understand our 1Z0-804 Exam Topics Pdf learning questions in detail, just come and try!
Oracle 1Z0-804 Exam Topics Pdf - Or you can choose to free update your exam dumps.
With the development of society, the 1Z0-804 Exam Topics Pdf certificate in our career field becomes a necessity for developing the abilities. Passing the 1Z0-804 Exam Topics Pdf and obtaining the certificate may be the fastest and most direct way to change your position and achieve your goal. And we are just right here to give you help. Being considered the most authentic brand in this career, our professional experts are making unremitting efforts to provide our customers the latest and valid {CertName} exam simulation.
Besides, to make you be rest assured of our dumps, we provide 1Z0-804 Exam Topics Pdf exam demo for you to free download. After using our software, you will know that it is not too difficult to pass 1Z0-804 Exam Topics Pdf 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
But we can help all of these candidates on IBM C1000-005 study questions. We will guarantee that you you can share the latest Cisco 300-740 exam study materials free during one year after your payment. So let our Dell D-PVMD24-DY-A-00 practice guide to be your learning partner in the course of preparing for the exam, it will be a wise choice for you to choose our Dell D-PVMD24-DY-A-00 study dumps. Salesforce Sales-Cloud-Consultant - A person's career prospects are often linked to his abilities, so an international and authoritative certificate is the best proof of one's ability. After nearly ten years' efforts, now our company have become the topnotch one in the field, therefore, if you want to pass the CompTIA DY0-001 exam as well as getting the related certification at a great ease, I strongly believe that the CompTIA DY0-001 study materials compiled by our company is your solid choice.
Updated: May 28, 2022