Our 1Z0-804 Test Sample real exam can be downloaded for free trial before purchase, which allows you to understand our 1Z0-804 Test Sample sample questions and software usage. It will also enable you to make a decision based on your own needs and will not regret. If you encounter any problems in the process of purchasing or using 1Z0-804 Test Sample study guide you can contact our customer service by e-mail or online at any time, we will provide you with professional help. You can contact with our service, and they will give you the most professional guide. Our 1Z0-804 Test Sample study materials are the accumulation of professional knowledge worthy practicing and remembering. Your ability will be enhanced quickly.
Our 1Z0-804 Test Sample exam torrent carries no viruses.
And we have three different versions Of our 1Z0-804 - Java SE 7 Programmer II Exam Test Sample study guide: the PDF, the Software and the APP online. As long as you study our Valid 1Z0-804 Test Guide training engine and followe it step by step, we believe you will achieve your dream easily. Every question from our Valid 1Z0-804 Test Guide study materials is carefully elaborated and the content of our Valid 1Z0-804 Test Guide exam questions involves the professional qualification certificate examination.
1Z0-804 Test Sample training materials are not only the domestic market, but also the international high-end market. We are studying some learning models suitable for high-end users. Our research materials have many advantages.
Oracle 1Z0-804 Test Sample - The reality is often cruel.
We attract customers by our fabulous 1Z0-804 Test Sample certification material and high pass rate, which are the most powerful evidence to show our strength. We are so proud to tell you that according to the statistics from our customers’ feedback, the pass rate among our customers who prepared for the exam with our 1Z0-804 Test Sample test guide have reached as high as 99%, which definitely ranks the top among our peers. Hence one can see that the Java SE 7 Programmer II Exam learn tool compiled by our company are definitely the best choice for you.
Imagine, if you're using a 1Z0-804 Test Sample practice materials, always appear this or that grammar, spelling errors, such as this will not only greatly affect your mood, but also restricted your learning efficiency. Therefore, good typesetting is essential for a product, especially education products, and the 1Z0-804 Test Sample test material can avoid these risks very well.
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
All in all, high efficiency of OCEG GRCA exam material is the reason for your selection. We employ the senior lecturers and authorized authors who have published the articles about the test to compile and organize the IBM C1000-172 prep guide dump. To help you get to know the exam questions and knowledge of the IBM C1000-156 practice exam successfully and smoothly, our experts just pick up the necessary and essential content in to our IBM C1000-156 test guide with unequivocal content rather than trivia knowledge that exam do not test at all. EMC D-VPX-OE-A-24 - You will find that learning is becoming interesting and easy. Many exam candidates ascribe their success to our Fortinet FCP_FAC_AD-6.5 real questions and become our regular customers eventually.
Updated: May 28, 2022