The development of science and technology makes our life more comfortable and convenient, which also brings us more challenges. Many company requests candidates not only have work experiences, but also some professional certifications. Therefore it is necessary to get a professional 1Z0-804 Exam Cram certification to pave the way for a better future. Our 1Z0-804 Exam Cram exam questions have been widely acclaimed among our customers, and the good reputation in industry prove that choosing our study materials would be the best way for you, and help you gain the 1Z0-804 Exam Cram certification successfully. With about ten years’ research and development we still keep updating our 1Z0-804 Exam Cram prep guide, in order to grasp knowledge points in accordance with the exam, thus your study process would targeted and efficient. And our professional 1Z0-804 Exam Cram study materials determine the high pass rate.
Java and Middleware 1Z0-804 So people are different from the past.
Our service staff will help you solve the problem about the 1Z0-804 - Java SE 7 Programmer II Exam Exam Cram training materials with the most professional knowledge and enthusiasm. The immediate downloading feature of our Pdf 1Z0-804 Exam Dump study materials is an eminent advantage of our products. Once the pay is done, our customers will receive an e-mail from our company.
Our 1Z0-804 Exam Cram exam quiz is so popular not only for the high quality, but also for the high efficiency services provided which owns to the efforts of all our staffs. First of all, if you are not sure about the 1Z0-804 Exam Cram exam, the online service will find the most accurate and all-sided information for you, so that you can know what is going on about all about the exam and make your decision to buy 1Z0-804 Exam Cram study guide or not.
Oracle 1Z0-804 Exam Cram - Victory won't come to me unless I go to it.
Our 1Z0-804 Exam Cram practice braindumps beckon exam candidates around the world with our attractive characters. Our experts made significant contribution to their excellence of the 1Z0-804 Exam Cram study materials. So we can say bluntly that our 1Z0-804 Exam Cram simulating exam is the best. Our effort in building the content of our 1Z0-804 Exam Cram learning questions lead to the development of learning guide and strengthen their perfection.
All 1Z0-804 Exam Cram test questions offered by us are tested and selected by our senior experts in IT filed, which only need little time to focus on the practice and the preparation. We provide our customers with the most reliable learning materials about 1Z0-804 Exam Cram certification exam and the guarantee of pass.
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.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: 3
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: 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.
Just look at the comments on the Lpi 201-450 training guide, you will know that how popular they are among the candidates. Now, quickly download ATLASSIAN ACP-120 free demo for try. Presiding over the line of our practice materials over ten years, our experts are proficient as elites who made our Google Professional-Cloud-Network-Engineer learning questions, and it is their job to officiate the routines of offering help for you. With the Huawei H28-153_V1.0 training pdf, you can get the knowledge you want in the actual test, so you do not need any other study material. And so many of our loyal customers have achieved their dreams with the help of our IBM C1000-162 exam questions.
Updated: May 28, 2022