Because there are excellent free trial services provided by our 1Z0-804 Practice Questions Ppt exam guides, our products will provide three demos that specially designed to help you pick the one you are satisfied. On the one hand, by the free trial services you can get close contact with our products, learn about the detailed information of our 1Z0-804 Practice Questions Ppt study materials, and know how to choose the different versions before you buy our products. On the other hand, using free trial downloading before purchasing, I can promise that you will have a good command of the function of our 1Z0-804 Practice Questions Ppt exam prepare. The product of Omgzlook is a very reliable training tool for you. The answers of the exam exercises provided by Omgzlook is very accurate. We will continue to pursue our passion for better performance and human-centric technology of latest 1Z0-804 Practice Questions Ppt quiz prep.
Java and Middleware 1Z0-804 Omgzlook is a professional website.
And we keep ameliorate our 1Z0-804 - Java SE 7 Programmer II Exam Practice Questions Ppt latest material according to requirements of 1Z0-804 - Java SE 7 Programmer II Exam Practice Questions Ppt exam. If you have any questions about the exam, Omgzlook the Oracle Exam 1Z0-804 Simulator Online will help you to solve them. Within a year, we provide free updates.
But we keep being the leading position in contrast. We are reactive to your concerns and also proactive to new trends happened in this 1Z0-804 Practice Questions Ppt exam. Considering many exam candidates are in a state of anguished mood to prepare for the 1Z0-804 Practice Questions Ppt exam, our company made three versions of 1Z0-804 Practice Questions Ppt real exam materials to offer help.
Oracle 1Z0-804 Practice Questions Ppt - Our products are just suitable for you.
Omgzlook is a website to provide a targeted training for Oracle certification 1Z0-804 Practice Questions Ppt exam. Omgzlook is also a website which can not only make your expertise to get promoted, but also help you pass Oracle certification 1Z0-804 Practice Questions Ppt exam for just one time. The training materials of Omgzlook are developed by many IT experts' continuously using their experience and knowledge to study, and the quality is very good and have very high accuracy. Once you select our Omgzlook, we can not only help you pass Oracle certification 1Z0-804 Practice Questions Ppt exam and consolidate their IT expertise, but also have a one-year free after-sale Update Service.
You will get your 1Z0-804 Practice Questions Ppt certification with little time and energy by the help of out dumps. Omgzlook is constantly updated in accordance with the changing requirements of the Oracle certification.
1Z0-804 PDF DEMO:
QUESTION NO: 1
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: 2
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: 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 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
QUESTION NO: 5
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.
Microsoft AZ-900-KR - If you buy the Omgzlook's products, we will not only spare no effort to help you pass the certification exam, but also provide a free update and upgrade service. As we all know, it is not an easy thing to gain the SAP C-S43-2023 certification. Finally, Omgzlook's latest Oracle H3C GB0-372-ENU simulation test, exercise questions and answers have come out. Our dumps collection will save you much time and ensure you get high mark in Microsoft MS-102 actual test with less effort. Huawei H12-811_V1.0 - Our questions and answers will not only allow you effortlessly through the exam first time, but also can save your valuable time.
Updated: May 28, 2022