If you are worry about the coming 1Z0-804 Exam Materials exam, our 1Z0-804 Exam Materials study materials will help you solve your problem. In order to promise the high quality of our 1Z0-804 Exam Materials exam questions, our company has outstanding technical staff, and has perfect service system after sale. More importantly, our good 1Z0-804 Exam Materials guide quiz and perfect after sale service are approbated by our local and international customers. Passing the exam has never been so efficient or easy when getting help from our 1Z0-804 Exam Materials preparation engine. We can claim that once you study with our 1Z0-804 Exam Materials exam questions for 20 to 30 hours, then you will be albe to pass the exam with confidence. We believe you won't be the exception, so if you want to achieve your dream and become the excellent people in the near future, please buy our 1Z0-804 Exam Materials actual exam, it will help you.
Java and Middleware 1Z0-804 It can help a lot of people achieve their dream.
Java and Middleware 1Z0-804 Exam Materials - Java SE 7 Programmer II Exam For a better understanding of their features, please follow our website and try on them. Omgzlook's training course has a high quality, which its practice questions have 95% similarity with real examination. If you use Omgzlook's product to do some simulation test, you can 100% pass your first time to attend IT certification exam.
Besides, we are punctually meeting commitments to offer help on 1Z0-804 Exam Materials study materials. So there is no doubt any information you provide will be treated as strictly serious and spare you from any loss of personal loss. There are so many success examples by choosing our 1Z0-804 Exam Materials guide quiz, so we believe you can be one of them.
More and more people choose Oracle Oracle 1Z0-804 Exam Materials exam.
If you require any further information about either our 1Z0-804 Exam Materials preparation exam or our corporation, please do not hesitate to let us know. High quality 1Z0-804 Exam Materials practice materials leave a good impression on the exam candidates and bring more business opportunities in the future. And many of our cutomers use our 1Z0-804 Exam Materials exam questions as their exam assistant and establish a long cooperation with us.
Our Oracle 1Z0-804 Exam Materials exam training materials contains questions and answers. Our experienced team of IT experts through their own knowledge and experience continue to explore the exam information.
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
Provided that you lose your exam with our HP HPE0-V28 exam questions unfortunately, you can have full refund or switch other version for free. PDMA NPDP - According to the needs of the candidate, they consider the issue from all angles, and manufacturing applicability exam training materials. Perhaps you haven't heard of our company's brand yet, although we are becoming a leader of Salesforce Marketing-Cloud-Email-Specialist exam questions in the industry. Cisco 500-490 - So our exam training materials is simulated with the practical exam. To address this issue, our ASQ CQE actual exam offers three different versions for users to choose from.
Updated: May 28, 2022