Highlight a person's learning effect is not enough, because it is difficult to grasp the difficulty of testing, a person cannot be effective information feedback, in order to solve this problem, our 1Z0-804 Preview real exam materials provide a powerful platform for users, allow users to exchange of experience. Here, the all users of our 1Z0-804 Preview learning reference files can through own id to login to the platform, realize the exchange and sharing with other users, even on the platform and more users to become good friends, encourage each other, to deal with the difficulties encountered in the process of preparation each other. Our 1Z0-804 Preview learning reference files not only provide a single learning environment for users, but also create a learning atmosphere like home, where you can learn and communicate easily. Do not satisfied with using shortcuts during your process, regular practice with our 1Z0-804 Preview exam prep will be easy. Tens of thousands of people has achieved success with our 1Z0-804 Previewstudy questions, you can absolutely do it. And countless of the candidates have been benefited from our 1Z0-804 Preview practice braindumps.
Java and Middleware 1Z0-804 And we have become a popular brand in this field.
As long as you try our 1Z0-804 - Java SE 7 Programmer II Exam Preview exam questions, we believe you will fall in love with it. For many people, it’s no panic passing the Certification 1Z0-804 Dump exam in a short time. Luckily enough，as a professional company in the field of Certification 1Z0-804 Dump practice questions ,our products will revolutionize the issue.
We guarantee that you can pass the exam at one time even within one week based on practicing our 1Z0-804 Preview exam materials regularly. 98 to 100 percent of former exam candidates have achieved their success by the help of our 1Z0-804 Preview practice questions. And we have been treated as the best friend as our 1Z0-804 Preview training guide can really help and change the condition which our loyal customers are in and give them a better future.
Oracle 1Z0-804 Preview - You must feel scared and disappointed.
In this age of anxiety, everyone seems to have great pressure. If you are better, you will have a more relaxed life. 1Z0-804 Preview guide materials allow you to increase the efficiency of your work. You can spend more time doing other things. Our 1Z0-804 Preview study questions allow you to pass the exam in the shortest possible time. Just study with our 1Z0-804 Preview exam braindumps 20 to 30 hours, and you will be able to pass the exam.
our 1Z0-804 Preview study materials will also save your time and energy in well-targeted learning as we are going to make everything done in order that you can stay focused in learning our 1Z0-804 Preview study materials without worries behind. We are so honored and pleased to be able to read our detailed introduction and we will try our best to enable you a better understanding of our 1Z0-804 Preview study materials better.
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
As long as the users choose to purchase our Microsoft PL-600 exam dumps, there is no doubt that he will enjoy the advantages of the most powerful update. On Omgzlook website you can free download part of the exam questions and answers about Oracle certification HP HPE0-V28 exam to quiz our reliability. Knowledge of the Microsoft AZ-104 real study dumps contains are very comprehensive, not only have the function of online learning, also can help the user to leak fill a vacancy, let those who deal with qualification exam users can easily and efficient use of the Microsoft AZ-104 question guide. Microsoft MB-230 exam is a Oracle certification exam and IT professionals who have passed some Oracle certification exams are popular in IT industry. Microsoft AZ-104 - What are you waiting for? Just buy our exam braindumps!
Updated: May 28, 2022