While others are playing games online, you can do online 1Z0-804 Test Papers exam questions. We are sure that as you hard as you are, you can pass 1Z0-804 Test Papers exam easily in a very short time. While others are surprised at your achievement, you might have found a better job. Even if you find that part of it is not for you, you can still choose other types of learning materials in our study materials. We can meet all your requirements and solve all your problems by our 1Z0-804 Test Papers certification guide. In addition, it is very easy and convenient to make notes during the study for 1Z0-804 Test Papers real test, which can facilitate your reviewing.
Java and Middleware 1Z0-804 Omgzlook is a great resource site.
To understand our 1Z0-804 - Java SE 7 Programmer II Exam Test Papers learning questions in detail, just come and try! Each IT person is working hard for promotion and salary increases. It is also a reflection of the pressure of modern society.
Many people want to be the competent people which can excel in the job in some area and be skillful in applying the knowledge to the practical working in some industry. But the thing is not so easy for them they need many efforts to achieve their goals. Passing the test 1Z0-804 Test Papers certification can make them become that kind of people and if you are one of them buying our 1Z0-804 Test Papers study materials will help you pass the 1Z0-804 Test Papers test smoothly with few efforts needed.
Oracle 1Z0-804 Test Papers - You can totally relay on us.
Quality should be tested by time and quantity, which is also the guarantee that we give you to provide 1Z0-804 Test Papers exam software for you. Continuous update of the exam questions, and professional analysis from our professional team have become the key for most candidates to pass 1Z0-804 Test Papers exam. The promise of "no help, full refund" is the motivation of our team. We will continue improving 1Z0-804 Test Papers exam study materials. We will guarantee that you you can share the latest 1Z0-804 Test Papers exam study materials free during one year after your payment.
Second, it is convenient for you to read and make notes with our versions of 1Z0-804 Test Papers exam materials. Last but not least, we will provide considerate on line after sale service for you in twenty four hours a day, seven days a week.
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
PECB ISO-IEC-27001-Lead-Auditor-KR - Now you can have these precious materials. After nearly ten years' efforts, now our company have become the topnotch one in the field, therefore, if you want to pass the EMC D-PCM-DY-23 exam as well as getting the related certification at a great ease, I strongly believe that the EMC D-PCM-DY-23 study materials compiled by our company is your solid choice. If you want to be familiar with the real test and grasp the rhythm in the real test, you can choose our EMC D-PSC-DS-23 exam test engine to practice. It is universally accepted that in this competitive society in order to get a good job we have no choice but to improve our own capacity and explore our potential constantly, and try our best to get the related SAP C-THR70-2404 certification is the best way to show our professional ability, however, the SAP C-THR70-2404 exam is hard nut to crack but our SAP C-THR70-2404 preparation questions are closely related to the exam, it is designed for you to systematize all of the key points needed for the SAP C-THR70-2404 exam. Now, let’s start your preparation with Databricks Databricks-Certified-Professional-Data-Engineer training material.
Updated: May 28, 2022