We are well-known for our wonderful performance on pushing more and more candidates to pass their 1Z0-804 Reliable Exam Camp Pdf exams and achieve their dreaming certifications. There is no exaggeration to say that with our 1Z0-804 Reliable Exam Camp Pdf study materials for 20 to 30 hours, you will be ready to pass your 1Z0-804 Reliable Exam Camp Pdf exam. Since our 1Z0-804 Reliable Exam Camp Pdf exam torrent is designed on the purpose to be understood by our customers all over the world, it is compiled into the simplest language to save time and efforts. If you have purchased our 1Z0-804 Reliable Exam Camp Pdf exam braindumps, you are advised to pay attention to your emails. Our system will automatically send you the updated version of the 1Z0-804 Reliable Exam Camp Pdf preparation quiz via email. Maybe you always thought study was too boring for you.
Java and Middleware 1Z0-804 Omgzlook can give you a brighter future.
Our company have the higher class operation system than other companies, so we can assure you that you can start to prepare for the 1Z0-804 - Java SE 7 Programmer II Exam Reliable Exam Camp Pdf exam with our study materials in the shortest time. Qualifications is just a stepping stone, and strength is the cornerstone which can secure your status. Oracle 1Z0-804 Latest Test Study Guide certification exam is a popular IT certification, and many people want to have it.
Next, through my introduction, I hope you can have a deeper understanding of our 1Z0-804 Reliable Exam Camp Pdf learning quiz. We really hope that our 1Z0-804 Reliable Exam Camp Pdf practice engine will give you some help. In fact, our 1Z0-804 Reliable Exam Camp Pdf exam questions have helped tens of thousands of our customers successfully achieve their certification.
Now, quickly download Oracle 1Z0-804 Reliable Exam Camp Pdf free demo for try.
Being anxious for the 1Z0-804 Reliable Exam Camp Pdf exam ahead of you? Have a look of our 1Z0-804 Reliable Exam Camp Pdf training engine please. Presiding over the line of our practice materials over ten years, our experts are proficient as elites who made our 1Z0-804 Reliable Exam Camp Pdf learning questions, and it is their job to officiate the routines of offering help for you. All points are predominantly related with the exam ahead of you. You will find the exam is a piece of cake with the help of our 1Z0-804 Reliable Exam Camp Pdf study materials.
1Z0-804 Reliable Exam Camp Pdf test engine can simulate the actual test during the preparation and record the wrong questions for our reviewing. You just need 20-30 hours for preparation and feel confident to face the 1Z0-804 Reliable Exam Camp Pdf actual test.
1Z0-804 PDF DEMO:
QUESTION NO: 1
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: 2
Given the fragment: If thread a and thread b are running, but not completing, which two could be occurring?
A.livelock
B.deadlock
C.starvation
D.loose coupling
E.cohesion
Answer: A,B
Explanation:
A: A thread often acts in response to the action of another thread. If the other thread's action is also a response to the action of another thread, then livelock may result. A thread often acts in response to the action of another thread. If the other thread's action is also a response to the action of another thread, then livelock may result.
B: Deadlock describes a situation where two or more threads are blocked forever, waiting for each other.
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:
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: 5
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
And so many of our loyal customers have achieved their dreams with the help of our EMC D-PVM-OE-23 exam questions. Immediately after you have made a purchase for our Network Appliance NS0-521 practice dumps, you can download our Network Appliance NS0-521 study materials to make preparations. If you have bought the Dell D-PWF-RDY-A-00 exam questions before, then you will know that we have free demos for you to download before your purchase. If you want to buy our Microsoft AZ-801 training guide in a preferential price, that’s completely possible. By concluding quintessential points into HP HPE7-A01 actual exam, you can pass the exam with the least time while huge progress.
Updated: May 28, 2022