By by constantly improving our dumps, our strong technical team can finally take proud to tell you that our 1Z0-804 Test Tutorial exam materials will give you unexpected surprises. You can download our free demo to try, and see which version of 1Z0-804 Test Tutorial exam materials are most suitable for you; then you can enjoy your improvement in IT skills that our products bring to you; and the sense of achievement from passing the 1Z0-804 Test Tutorial certification exam. Please believe that our Omgzlook team have the same will that we are eager to help you pass 1Z0-804 Test Tutorial exam. Besides, there are free demos for your careful consideration to satisfy individual needs on our 1Z0-804 Test Tutorial learning prep. You can free download them to check if it is the exact one that you want. You have tried all kinds of exam questions when others are still looking around for 1Z0-804 Test Tutorial exam materials, which means you have stayed one step ahead of other IT exam candidates.
Java and Middleware 1Z0-804 If you fail, don't forget to learn your lesson.
So the PDF version of our 1Z0-804 - Java SE 7 Programmer II Exam Test Tutorial exam questions is convenient. Downloading the 1Z0-804 Latest Associate Level Exam free demo doesn't cost you anything and you will learn about the pattern of our practice exam and the accuracy of our 1Z0-804 Latest Associate Level Exam test answers. We constantly check the updating of 1Z0-804 Latest Associate Level Exam vce pdf to follow the current exam requirement and you will be allowed to free update your pdf files one-year.
We often ask, what is the purpose of learning? Why should we study? Why did you study for 1Z0-804 Test Tutorialexam so long? As many people think that, even if one day we forget the formula for the area of a triangle, we can still live very well, but if it were not for the knowledge of learning 1Z0-804 Test Tutorial exam and try to obtain certification, how can we have the opportunity to good to future life? So, the examination is necessary, only to get the test 1Z0-804 Test Tutorial certification, get a certificate, to prove better us, to pave the way for our future life.
Welcome your purchase for our Oracle 1Z0-804 Test Tutorial exam torrent.
In order to save a lot of unnecessary trouble to users, we have completed our Java SE 7 Programmer II Exam study questions research and development of online learning platform, users do not need to download and install, only need your digital devices have a browser, can be done online operation of the 1Z0-804 Test Tutorial test guide. This kind of learning method is very convenient for the user, especially in the time of our fast pace to get Oracle certification. In addition, our test data is completely free of user's computer memory, will only consume a small amount of running memory when the user is using our product. At the same time, as long as the user ensures that the network is stable when using our 1Z0-804 Test Tutorial training materials, all the operations of the learning material of can be applied perfectly.
With our great efforts, our 1Z0-804 Test Tutorialpractice dumps have been narrowed down and targeted to the 1Z0-804 Test Tutorial examination. We can ensure you a pass rate as high as 99%!
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
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:
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 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
Quickly purchase Amazon ANS-C01-KR study guide and go to the top of your life! Our Citrix 1Y0-204 training materials provide 3 versions to the client and they include the PDF version, PC version, APP online version. When it comes to our time-tested EMC D-PWF-DS-23 latest practice dumps, for one thing, we have a professional team contains a lot of experts who have devoted themselves to the research and development of our EMC D-PWF-DS-23 exam guide, thus we feel confident enough under the intensely competitive market. SAP E-S4CPE-2023 - We can promise that the online version will not let you down. If you like to use computer to learn, you can use the Software and the APP online versions of the Versa Networks VNX100 exam questions.
Updated: May 28, 2022