If you have difficulty in gaining the latest information when you are preparing for the 1Z0-804 Questions Fee, it will be not easy for you to pass the exam and get the related certification in a short time. However, if you choose the 1Z0-804 Questions Fee exam reference guide from our company, we are willing to help you solve your problem. There are a lot of IT experts in our company, and they are responsible to update the contents every day. The most notable feature of our 1Z0-804 Questions Fee learning quiz is that they provide you with the most practical solutions to help you learn the exam points of effortlessly and easily, then mastering the core information of the certification course outline. Their quality of our 1Z0-804 Questions Fee study guide is much higher than the quality of any other materials, and questions and answers of 1Z0-804 Questions Fee training materials contain information from the best available sources. 1Z0-804 Questions Fee practice materials combine knowledge with the latest technology to greatly stimulate your learning power.
Java and Middleware 1Z0-804 When we choose job, job are also choosing us.
Java and Middleware 1Z0-804 Questions Fee - Java SE 7 Programmer II Exam Some buttons are used for hide or display answers. Next, I will introduce you to the most representative advantages of 1Z0-804 Reliable Real Exam Questions real exam. You can think about whether these advantages are what you need!
And if you don't know which one to buy, you can free download the demos of the 1Z0-804 Questions Fee study materials to check it out. The demos of the 1Z0-804 Questions Fee exam questions are a small part of the real exam questions. In order to meet a wide range of tastes, our company has developed the three versions of the 1Z0-804 Questions Fee preparation questions, which includes PDF version, online test engine and windows software.
Oracle 1Z0-804 Questions Fee - They have always been in a trend of advancement.
One of the significant advantages of our 1Z0-804 Questions Fee exam material is that you can spend less time to pass the exam. People are engaged in modern society. So our goal is to achieve the best learning effect in the shortest time. So our 1Z0-804 Questions Fee test prep will not occupy too much time. You might think that it is impossible to memorize well all knowledge. We can tell you that our 1Z0-804 Questions Fee test prep concentrate on systematic study, which means all your study is logic. Why not give us a chance to prove? Our 1Z0-804 Questions Fee guide question dumps will never let you down.
As long as you practice our 1Z0-804 Questions Fee test question, you can pass exam quickly and successfully. By using them, you can not only save your time and money, but also pass 1Z0-804 Questions Fee practice exam without any stress.
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
Apart from basic knowledge, we have made use of the newest technology to enrich your study of the EMC D-DP-FN-23 exam study materials. Lpi 701-100 - Even if you are a newcomer who has just entered the industry, you can learn all the knowledge points without any obstacles. EMC D-SF-A-24 - You can consult online no matter what problems you encounter. CompTIA CAS-004 - Our ability of improvement is stronger than others. Using SAP C-DBADM-2404 exam prep is an important step for you to improve your soft power.
Updated: May 28, 2022