Even if you are a newcomer who has just entered the industry, you can learn all the knowledge points without any obstacles. We believe that 1Z0-804 Exam Pdf study tool will make you fall in love with learning. Come and buy it now. We have always advocated customer first. If you use our learning materials to achieve your goals, we will be honored. As for our 1Z0-804 Exam Pdf exam braindump, our company masters the core technology, owns the independent intellectual property rights and strong market competitiveness.
Java and Middleware 1Z0-804 It is useless if you do not prepare well.
Also, our experts are capable of predicating the difficult knowledge parts of the 1Z0-804 - Java SE 7 Programmer II Exam Exam Pdf exam according to the test syllabus. And our 1Z0-804 Reliable Test Topics Pdf practice engine will be your best friend to help you succeed. Now, our 1Z0-804 Reliable Test Topics Pdf study questions are in short supply in the market.
When you try our part of Oracle certification 1Z0-804 Exam Pdf exam practice questions and answers, you can make a choice to our Omgzlook. We will be 100% providing you convenience and guarantee. Remember that making you 100% pass Oracle certification 1Z0-804 Exam Pdf exam is Omgzlook.
Oracle 1Z0-804 Exam Pdf - I wish you good luck.
Omgzlook website is fully equipped with resources and the questions of Oracle 1Z0-804 Exam Pdf exam, it also includes the Oracle 1Z0-804 Exam Pdf exam practice test. Which can help candidates prepare for the exam and pass the exam. You can download the part of the trial exam questions and answers as a try. Omgzlook provide true and comprehensive exam questions and answers. With our exclusive online Oracle 1Z0-804 Exam Pdf exam training materials, you'll easily through Oracle 1Z0-804 Exam Pdf exam. Our site ensure 100% pass rate.
Oracle 1Z0-804 Exam Pdf is a very important certification exam in the IT industry and passing Oracle certification 1Z0-804 Exam Pdf exam is very difficult. But in order to let the job position to improve spending some money to choose a good training institution to help you pass the exam is worthful.
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
The exam materiala of the Omgzlook Oracle Fortinet NSE5_FMG-7.2 is specifically designed for candicates. Snowflake DEA-C01 - Select Omgzlook is equivalent to choose success. Oracle Symantec 250-586 certification exam will definitely lead you to a better career prospects. Omgzlook Oracle Fortinet ICS-SCADA exam training materials bear with a large number of the exam questions you need, which is a good choice. Amazon CLF-C02 - Come on, you will be the next best IT experts.
Updated: May 28, 2022