Dear customers, you may think it is out of your league before such as winning the 1Z0-804 Test Sample Questions exam practice is possible within a week or a 1Z0-804 Test Sample Questions practice material could have passing rate over 98 percent. This time it will not be illusions for you anymore. You can learn some authentic knowledge with our high accuracy and efficiency 1Z0-804 Test Sample Questions simulating questions and help you get authentic knowledge of the exam. Once you unfortunately fail the exam, we will give you a full refund, and our refund process is very simple. We provide 24-hour online service for all customers who have purchased 1Z0-804 Test Sample Questions test guide. It all starts from our 1Z0-804 Test Sample Questions learning questions.
Java and Middleware 1Z0-804 As the saying goes, Rome is not build in a day.
Java and Middleware 1Z0-804 Test Sample Questions - Java SE 7 Programmer II Exam They are quite convenient. With the rapid development of the world economy, it has been universally accepted that a growing number of people have longed to become the social elite. However, the competition of becoming the social elite is fierce for all people.
Our 1Z0-804 Test Sample Questions learning materials provide you with a platform of knowledge to help you achieve your wishes. Do you want to find a job that really fulfills your ambitions? That's because you haven't found an opportunity to improve your ability to lay a solid foundation for a good career. Our 1Z0-804 Test Sample Questions quiz torrent can help you get out of trouble regain confidence and embrace a better life.
Oracle 1Z0-804 Test Sample Questions - Join us and you will be one of them.
As we all know, it is difficult to prepare the 1Z0-804 Test Sample Questions exam by ourselves. Excellent guidance is indispensable. If you urgently need help, come to buy our study materials. Our company has been regarded as the most excellent online retailers of the 1Z0-804 Test Sample Questions exam question. So our assistance is the most professional and superior. You can totally rely on our study materials to pass the exam. All the key and difficult points of the 1Z0-804 Test Sample Questions exam have been summarized by our experts. They have rearranged all contents, which is convenient for your practice. Perhaps you cannot grasp all crucial parts of the 1Z0-804 Test Sample Questions study tool by yourself. You also can refer to other candidates’ review guidance, which might give you some help. Then we can offer you a variety of learning styles. Our printable 1Z0-804 Test Sample Questions real exam dumps, online engine and windows software are popular among candidates. So you will never feel bored when studying on our 1Z0-804 Test Sample Questions study tool.
Our 1Z0-804 Test Sample Questions certification questions are close to the real exam and the questions and answers of the test bank cover the entire syllabus of the real exam and all the important information about the exam. Our 1Z0-804 Test Sample Questions learning dump can stimulate the real exam’s environment to make the learners be personally on the scene and help the learners adjust the speed when they attend the real exam.
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
Microsoft MB-330 - If you fail to pass the exam, we will give a full refund. If you have any worry about the Fortinet FCP_WCS_AD-7.4 exam, do not worry, we are glad to help you. Salesforce Sales-Cloud-Consultant - As a thriving multinational company, we are always committed to solving the problem that our customers may have. Although we come across some technical questions of our Pegasystems PEGACPLSA88V1 learning guide during development process, we still never give up to developing our Pegasystems PEGACPLSA88V1 practice engine to be the best in every detail. Up to now, our Cisco 500-490 training quiz has helped countless candidates to obtain desired certificate.
Updated: May 28, 2022