And our 1Z0-804 Reliable Test Collection Pdf practice engine will be your best friend to help you succeed. Now, our 1Z0-804 Reliable Test Collection Pdf study questions are in short supply in the market. Our sales volumes are beyond your imagination. Remember that making you 100% pass Oracle certification 1Z0-804 Reliable Test Collection Pdf exam is Omgzlook. When you try our part of Oracle certification 1Z0-804 Reliable Test Collection Pdf exam practice questions and answers, you can make a choice to our Omgzlook. If you still desperately cram knowledge and spend a lot of precious time and energy to prepare for passing Oracle certification 1Z0-804 Reliable Test Collection Pdf exam, and at the same time do not know how to choose a more effective shortcut to pass Oracle certification 1Z0-804 Reliable Test Collection Pdf exam.
Java and Middleware 1Z0-804 I wish you good luck.
With our exclusive online Oracle 1Z0-804 - Java SE 7 Programmer II Exam Reliable Test Collection Pdf exam training materials, you'll easily through Oracle 1Z0-804 - Java SE 7 Programmer II Exam Reliable Test Collection Pdf exam. Oracle New 1Z0-804 Test Papers is a very important certification exam in the IT industry and passing Oracle certification New 1Z0-804 Test Papers exam is very difficult. But in order to let the job position to improve spending some money to choose a good training institution to help you pass the exam is worthful.
It is a professional exam materials that the IT elite team specially tailored for you. Passed the exam certification in the IT industry will be reflected in international value. There are many dumps and training materials providers that would guarantee you pass the Oracle 1Z0-804 Reliable Test Collection Pdf exam.
Oracle 1Z0-804 Reliable Test Collection Pdf - We also offer a year of free updates.
Are you worrying about how to pass Oracle 1Z0-804 Reliable Test Collection Pdf test? Now don't need to worry about the problem. Omgzlook that committed to the study of Oracle 1Z0-804 Reliable Test Collection Pdf certification exam for years has a wealth of experience and strong exam dumps to help you effectively pass your exam. Whether to pass the exam successfully, it consists not in how many materials you have seen, but in if you find the right method. Omgzlook is the right method which can help you sail through Oracle 1Z0-804 Reliable Test Collection Pdf certification exam.
Its accuracy rate is 100% and let you take the exam with peace of mind, and pass the exam easily. In order to meet the needs of each candidate, the team of IT experts in Omgzlook are using their experience and knowledge to improve the quality of exam training materials constantly.
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
What we provide for you is the latest and comprehensive Cisco 200-901 exam dumps, the safest purchase guarantee and the immediate update of Cisco 200-901 exam software. Huawei H14-331_V1.0 - So, the competition is in fierce in IT industry. VMware 5V0-31.22 - The empty promise is not enough. Instead of wasting your time on preparing for Network Appliance NS0-516 exam, you should use the time to do significant thing. If you are tired with the screen for study, you can print the SAP C-ARCON-2404 pdf dumps into papers.
Updated: May 28, 2022