Our 1Z0-804 Exam Collection training quiz will be your best teacher who helps you to find the key and difficulty of the exam, so that you no longer feel confused when review. Our 1Z0-804 Exam Collection study materials will be your best learning partner and will accompany you through every day of the review. Our 1Z0-804 Exam Collection exam quiz will help you to deal with all the difficulties you have encountered in the learning process and make you walk more easily and happily on the road of studying. The secret of success is constancy to purpose. If your purpose is passing exams and getting a certification. You will get more opportunities than others, and your dreams may really come true in the near future.
Java and Middleware 1Z0-804 Moreover, we have Demos as freebies.
With our 1Z0-804 - Java SE 7 Programmer II Exam Exam Collection study materials, you can have different and pleasure study experience as well as pass 1Z0-804 - Java SE 7 Programmer II Exam Exam Collection exam easily. If you decide to buy our Latest 1Z0-804 Test Blueprint test guide, the online workers of our company will introduce the different function to you. You will have a deep understanding of the three versions of our Latest 1Z0-804 Test Blueprint exam questions.
As we will find that, get the test 1Z0-804 Exam Collection certification, acquire the qualification of as much as possible to our employment effect is significant. But how to get the test 1Z0-804 Exam Collection certification didn't own a set of methods, and cost a lot of time to do something that has no value. With our 1Z0-804 Exam Collection exam Practice, you will feel much relax for the advantages of high-efficiency and accurate positioning on the content and formats according to the candidates’ interests and hobbies.
Oracle 1Z0-804 Exam Collection - We must realize our own values and make progress.
Our company provides the free download service of 1Z0-804 Exam Collection test torrent for all people. If you want to understand our 1Z0-804 Exam Collection exam prep, you can download the demo from our web page. You do not need to spend money; because our 1Z0-804 Exam Collection test questions provide you with the demo for free. You just need to download the demo of our 1Z0-804 Exam Collection exam prep according to our guiding; you will get the demo for free easily before you purchase our products. By using the demo, we believe that you will have a deeply understanding of our 1Z0-804 Exam Collection test torrent. We can make sure that you will like our products; because you will it can help you a lot.
If you have difficulty in gaining the latest information when you are preparing for the 1Z0-804 Exam Collection, it will be not easy for you to pass the exam and get the related certification in a short time. However, if you choose the 1Z0-804 Exam Collection exam reference guide from our company, we are willing to help you solve your problem.
1Z0-804 PDF DEMO:
QUESTION NO: 1
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: 2
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: 3
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: 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 code fragment:
What is the result?
A.Java 7
B.Java 6
C.Java 7, Java 6
D.Java 7 java 6
E.Java
Answer: C
Explanation:
regex: Java / one or more anything !!! / ends with a digit so it is the source string
The most notable feature of our CompTIA SY0-701 learning quiz is that they provide you with the most practical solutions to help you learn the exam points of effortlessly and easily, then mastering the core information of the certification course outline. SAP C-ARP2P-2404 practice materials combine knowledge with the latest technology to greatly stimulate your learning power. VMware 2V0-31.24 - We know that consumers want to have a preliminary understanding of the product before buying it. On the other hand, under the guidance of high quality research materials, the rate of adoption of the Microsoft AZ-104 exam guide is up to 98% to 100%. When we choose the employment work, you will meet a bottleneck, how to let a company to choose you to be a part of him? We would say ability, so how does that show up? There seems to be only one quantifiable standard to help us get a more competitive job, which is to get the test Huawei H14-331_V1.0certification and obtain a qualification.
Updated: May 28, 2022