Omgzlook's providing training material is very close to the content of the formal examination. Through our short-term special training You can quickly grasp IT professional knowledge, and then have a good preparation for your exam. We promise that we will do our best to help you pass the Oracle certification 1Z0-804 Questions exam. Our 1Z0-804 Questions exam materials give real exam environment with multiple learning tools that allow you to do a selective study and will help you to get the job that you are looking for. Moreover, we also provide 100% money back guarantee on our 1Z0-804 Questions exam materials, and you will be able to pass the 1Z0-804 Questions exam in short time without facing any troubles. We will provide one year free update service for those customers who choose Omgzlook's products.
Java and Middleware 1Z0-804 We can help you to achieve your goals.
We can lead you the best and the fastest way to reach for the certification of 1Z0-804 - Java SE 7 Programmer II Exam Questions exam dumps and achieve your desired higher salary by getting a more important position in the company. If you have a faith, then go to defend it. Gorky once said that faith is a great emotion, a creative force.
We have considerate after sales services with genial staff. They are willing to solve the problems of our 1Z0-804 Questions training guide 24/7 all the time. If you have any question that you don't understand, just contat us and we will give you the most professional advice immediately.
Oracle 1Z0-804 Questions - It is unmarched high as 98% to 100%.
Sometimes hesitating will lead to missing a lot of opportunities. If you think a lot of our 1Z0-804 Questions exam dumps PDF, you should not hesitate again. Too much hesitating will just waste a lot of time. Our 1Z0-804 Questions exam dumps PDF can help you prepare casually and pass exam easily. If you make the best use of your time and obtain a useful certification you may get a senior position ahead of others. Chance favors the prepared mind. Omgzlook provide the best 1Z0-804 Questions exam dumps PDF materials in this field which is helpful for you.
If you have any questions, you can contact our specialists. We will provide you with thoughtful service.
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
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: 4
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: 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
There are Appian ACA100 real questions available for our candidates with accurate answers and detailed explanations. Our Microsoft PL-600 learning materials are new but increasingly popular choices these days which incorporate the newest information and the most professional knowledge of the practice exam. Our Amazon AIF-C01 exam dumps are required because people want to get succeed in IT field by clearing the certification exam. Fortinet NSE7_EFW-7.2 - If you have any questions about Java SE 7 Programmer II Exam test torrent or there are any problems existing in the process of the refund you can contact us by mails or contact our online customer service personnel and we will reply and solve your doubts or questions promptly. The Adobe AD0-E908 practice download pdf offered by Omgzlook can give you some reference.
Updated: May 28, 2022