Our 1Z0-804 Exam Testking study materials boost superior advantages and the service of our products is perfect. We choose the most useful and typical questions and answers which contain the key points of the test and we try our best to use the least amount of questions and answers to showcase the most significant information. Our 1Z0-804 Exam Testking learning guide provides a variety of functions to help the clients improve their learning. Now Oracle 1Z0-804 Exam Testking certification test is very popular. Not having got 1Z0-804 Exam Testking certificate, you must want to take the exam. I’m sure our 24-hour online service will not disappoint you as we offer our service 24/7 on our 1Z0-804 Exam Testking study materials.
Java and Middleware 1Z0-804 Don't worry over trifles.
You can rest assured to buy the 1Z0-804 - Java SE 7 Programmer II Exam Exam Testking exam dumps from our company. The mission of Omgzlook is to make the valid and high quality Oracle test pdf to help you advance your skills and knowledge and get the Study 1Z0-804 Group exam certification successfully. When you visit our product page, you will find the detail information about Study 1Z0-804 Group practice test.
The system is highly flexible, which has short reaction time. So you will quickly get a feedback about your exercises of the 1Z0-804 Exam Testking preparation questions. For example, it will note that how much time you have used to finish the 1Z0-804 Exam Testking study guide, and how much marks you got for your practice as well as what kind of the questions and answers you are wrong with.
Oracle 1Z0-804 Exam Testking - Perhaps this is the beginning of your change.
If you are nervous on your 1Z0-804 Exam Testking exam for you always have the problem on the time-schedule or feeling lack of confidence on the condition that you go to the real exam room. Our Software version of 1Z0-804 Exam Testking study materials will be your best assistant. With the advantage of simulating the real exam environment, you can get a wonderful study experience with our 1Z0-804 Exam Testking exam prep as well as gain the best pass percentage.
In the process of job hunting, we are always asked what are the achievements and what certificates have we obtained? Therefore, we get the test Oracle certification and obtain the qualification certificate to become a quantitative standard, and our 1Z0-804 Exam Testking learning guide can help you to prove yourself the fastest in a very short period of time. Life is short for each of us, and time is precious to us.
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
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: 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
Get the best Microsoft AZ-104-KR exam Training; as you study from our exam-files. Our Huawei H20-421_V1.0 practical material is a learning tool that produces a higher yield than the other. We accept the challenge to make you pass Microsoft MS-900 exam without seeing failure ever! All of Juniper JN0-280 learning materials do this to allow you to solve problems in a pleasant atmosphere while enhancing your interest in learning. Palo Alto Networks PCNSA - Omgzlook trusts in displacing all the qualms before believing us.
Updated: May 28, 2022