We have researched an intelligent system to help testing errors of the 1Z0-804 Exam Vce Free exam materials. That is why our 1Z0-804 Exam Vce Free practice engine is considered to be the most helpful exam tool in the market. We always lay great emphasis on the quality of our 1Z0-804 Exam Vce Free study guide. Now are you in preparation for 1Z0-804 Exam Vce Free exam? If so, you must be a man with targets. Our Omgzlook are committed to help such a man with targets to achieve the goal. It is up to you to make a decision.
Java and Middleware 1Z0-804 Omgzlook will achieve your dream.
It doesn’t matter if it's your first time to attend 1Z0-804 - Java SE 7 Programmer II Exam Exam Vce Free practice test or if you are freshman in the IT certification test, our latest 1Z0-804 - Java SE 7 Programmer II Exam Exam Vce Free dumps guide will boost you confidence to face the challenge. About Oracle Valid Test 1Z0-804 Questions And Answers exam, you can find these questions from different web sites or books, but the key is logical and connected. Our questions and answers will not only allow you effortlessly through the exam first time, but also can save your valuable time.
For example, the 1Z0-804 Exam Vce Free practice dumps contain the comprehensive contents which relevant to the actual test, with which you can pass your 1Z0-804 Exam Vce Free actual test with high score. Besides, you can print the 1Z0-804 Exam Vce Free study torrent into papers, which can give a best way to remember the questions. We guarantee full refund for any reason in case of your failure of 1Z0-804 Exam Vce Free test.
Actually, Oracle 1Z0-804 Exam Vce Free exam really make you anxious.
After our unremitting efforts, 1Z0-804 Exam Vce Free learning guide comes in everybody's expectation. Our professional experts not only have simplified the content and grasp the key points for our customers, but also recompiled the 1Z0-804 Exam Vce Free preparation materials into simple language so that all of our customers can understand easily no matter which countries they are from. In such a way, you will get a leisure study experience as well as a doomed success on your coming 1Z0-804 Exam Vce Free exam.
Every version of 1Z0-804 Exam Vce Free study materials that we provide to you has its own advantage: the PDF version has no equipment limited, which can be read anywhere; the online version can use on any electronic equipment there is network available; the software version can simulate the real 1Z0-804 Exam Vce Free exam environment to let you have more real feeling to 1Z0-804 Exam Vce Free real exam, besides the software version can be available installed on unlimited number devices.
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
By passing the exams multiple times on practice test software, you will be able to pass the real Salesforce Public-Sector-Solutions test in the first attempt. Amazon AIF-C01 - Besides, you will enjoy the money refund policy in case of failure. To make sure your situation of passing the certificate efficiently, our ISTQB CTAL-TTA study materials are compiled by first-rank experts. Our Microsoft PL-600 free demo is available for all of you. First of all, our EMC D-CSF-SC-23 study dumps cover all related tests about computers.
Updated: May 28, 2022