More importantly, we provide all people with the trial demo for free before you buy our 1Z0-804 Test Voucher exam torrent and it means that you have the chance to download from our web page for free; you do not need to spend any money. We are willing to provide all people with the demo of our 1Z0-804 Test Voucher study tool for free. If you have any doubt about our products that will bring a lot of benefits for you. Sometimes a small step is possible to be a big step in life. 1Z0-804 Test Voucher exam seems just a small exam, but to get the 1Z0-804 Test Voucher certification exam is to be reckoned in your career. Because many users are first taking part in the exams, so for the exam and test time distribution of the above lack certain experience, and thus prone to the confusion in the examination place, time to grasp, eventually led to not finish the exam totally.
Java and Middleware 1Z0-804 We get first-hand information; 2.
You will change a lot after learning our 1Z0-804 - Java SE 7 Programmer II Exam Test Voucher study materials. As we sell electronic files, there is no need to ship. After payment you can receive Exam Dumps 1Z0-804 Provider exam review questions you purchase soon so that you can study before.
There is no doubt that the certification has become more and more important for a lot of people, especial these people who are looking for a good job, and it has been a general trend. More and more workers have to spend a lot of time on meeting the challenge of gaining the 1Z0-804 Test Voucher certification by sitting for an exam. It is known to us that more and more companies start to pay high attention to the 1Z0-804 Test Voucher certification of the candidates.
Oracle 1Z0-804 Test Voucher - So stop hesitation and buy our study materials.
Preparing for the 1Z0-804 Test Voucher real exam is easier if you can select the right test questions and be sure of the answers. The 1Z0-804 Test Voucher test answers are tested and approved by our certified experts and you can check the accuracy of our questions from our free demo. Expert for one-year free updating of 1Z0-804 Test Voucher dumps pdf, we promise you full refund if you failed exam with our dumps.
So you just need to memorize our correct questions and answers of the 1Z0-804 Test Voucher study materials. You absolutely can pass the exam.
1Z0-804 PDF DEMO:
QUESTION NO: 1
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: 2
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: 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
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
QUESTION NO: 5
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.
Our customers can easily access and download the Amazon AI1-C01 dumps pdf on many electronic devices including computer, laptop and Mac. How do you stand out? Obtaining Microsoft MB-335 certification is a very good choice. Our ITIL ITIL-DSV exam review contains the latest test questions and accurate answers along with the professional explanations. Our VMware 5V0-31.23 study materials allow you to improve your competitiveness in a short period of time. Our experts check the updating of SAP C_THR89_2405 free demo to ensure the accuracy of our dumps and create the pass guide based on the latest information.
Updated: May 28, 2022