The rest of the time you can do anything you want to do to, which can fully reduce your review pressure. Saving time and improving efficiency is the consistent purpose of our 1Z0-804 New Exam Camp File learning materials. With the help of our 1Z0-804 New Exam Camp File exam questions, your review process will no longer be full of pressure and anxiety. When you send us a message, we will reply immediately and we will never waste your precious time on studying our 1Z0-804 New Exam Camp File practice quiz. We will provide you with professional advice before you buy our 1Z0-804 New Exam Camp File guide materials. Are you trying to pass the 1Z0-804 New Exam Camp File exam to get the longing 1Z0-804 New Exam Camp File certification? As we know, there are a lot of the advantages of the certification, such as higher salaries, better job positions and so on.
Java and Middleware 1Z0-804 You can directly print it on papers.
At the same time, our 1Z0-804 - Java SE 7 Programmer II Exam New Exam Camp File learning materials discard the most traditional rote memorization methods and impart the key points of the qualifying exam in a way that best suits the user's learning interests, this is the highest level of experience that our most authoritative think tank brings to our 1Z0-804 - Java SE 7 Programmer II Exam New Exam Camp File learning materials users. Users using our Real 1Z0-804 Dumps study materials must be the first group of people who come into contact with new resources. When you receive an update reminder from Real 1Z0-804 Dumps practice questions, you can update the version in time and you will never miss a key message.
In compliance with syllabus of the exam, our 1Z0-804 New Exam Camp File practice materials are determinant factors giving you assurance of smooth exam. Our 1Z0-804 New Exam Camp File practice materials comprise of a number of academic questions for your practice, which are interlinked and helpful for your exam. So, they are specified as one of the most successful 1Z0-804 New Exam Camp File practice materials in the line.
Oracle 1Z0-804 New Exam Camp File - Within a year, we provide free updates.
Considering many exam candidates are in a state of anguished mood to prepare for the 1Z0-804 New Exam Camp File exam, our company made three versions of 1Z0-804 New Exam Camp File real exam materials to offer help. All these variants due to our customer-oriented tenets. As a responsible company over ten years, we are trustworthy. In the competitive economy, this company cannot remain in the business for long. But we keep being the leading position in contrast. We are reactive to your concerns and also proactive to new trends happened in this 1Z0-804 New Exam Camp File exam.
The effect of Omgzlook's Oracle 1Z0-804 New Exam Camp File exam training materials is reflected particularly good by the use of the many candidates. If you participate in the IT exam, you should not hesitate to choose Omgzlook's Oracle 1Z0-804 New Exam Camp File exam training materials.
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 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: 3
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: 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 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.
The content of SASInstitute A00-420 study material is comprehensive and targeted so that you learning is no longer blind. Cisco 200-301-KR - So that you can achieve a multiplier effect. Our EMC D-XTR-DS-A-24 guide question dumps are suitable for all age groups. EMC D-PCR-DY-23 - Education degree just mean that you have this learning experience only. Please be assured that with the help of Network Appliance NS0-700 learning materials, you will be able to successfully pass the exam.
Updated: May 28, 2022