Our 1Z0-804 Latest Exam Pattern study tool prepared by our company has now been selected as the secret weapons of customers who wish to pass the exam and obtain relevant certification. If you are agonizing about how to pass the exam and to get the Oracle certificate, now you can try our learning materials. Our reputation is earned by high-quality of our learning materials. The clients can use the shortest time to prepare the exam and the learning only costs 20-30 hours. The questions and answers of our 1Z0-804 Latest Exam Pattern exam questions are refined and have simplified the most important information so as to let the clients use little time to learn. After your purchase of 1Z0-804 Latest Exam Pattern learning engine, our system will send a link to your email in 5 to 10 minutes.
Java and Middleware 1Z0-804 Now, people are blundering.
To satisfy the goals of exam candidates, we created the high quality and high accuracy 1Z0-804 - Java SE 7 Programmer II Exam Latest Exam Pattern real materials for you. Once you purchase our windows software of the PDF 1Z0-804 Cram Exam training engine, you can enjoy unrestricted downloading and installation of our PDF 1Z0-804 Cram Exam study guide. You need to reserve our installation packages of our PDF 1Z0-804 Cram Exam learning guide in your flash disks.
We are sure you can seep great deal of knowledge from our 1Z0-804 Latest Exam Pattern study prep in preference to other materials obviously. Our 1Z0-804 Latest Exam Pattern practice materials have variant kinds including PDF, app and software versions. As 1Z0-804 Latest Exam Pattern exam questions with high prestige and esteem in the market, we hold sturdy faith for you.
Oracle 1Z0-804 Latest Exam Pattern - We're definitely not exaggerating.
Combined with your specific situation and the characteristics of our 1Z0-804 Latest Exam Pattern exam questions, our professional services will recommend the most suitable version of 1Z0-804 Latest Exam Pattern study materials for you. We introduce a free trial version of the 1Z0-804 Latest Exam Pattern learning guide because we want users to see our sincerity. 1Z0-804 Latest Exam Pattern exam prep sincerely hopes that you can achieve your goals and realize your dreams.
The one who choose our study materials that consider our website as the top preparation material seller for 1Z0-804 Latest Exam Pattern study materials, and inevitable to carry all candidates the finest knowledge on exam syllabus contents. Not only that, we will provide you a free update service within one year from the date of purchase, in order to keep up the changes in the exam so that every candidates who purchase our{ ExamCode} study materials can pass the exam one time.
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
The existence of our ISM INTE learning guide is regarded as in favor of your efficiency of passing the exam. Cisco 300-715 - To meet the needs of users, and to keep up with the trend of the examination outline, our products will provide customers with latest version of our products. Huawei H19-402_V1.0 - And we will send you the new updates if our experts make them freely. In addition, our Dell D-PDPS4400-A-01 study materials will be updated according to the newest test syllabus. With years of experience dealing with SAP C-THR95-2405 learning engine, we have thorough grasp of knowledge which appears clearly in our SAP C-THR95-2405 study quiz with all the keypoints and the latest questions and answers.
Updated: May 28, 2022