When the reviewing process gets some tense, our 1Z0-804 Tips practice materials will solve your problems with efficiency. With high-quality 1Z0-804 Tips guide materials and flexible choices of learning mode, they would bring about the convenience and easiness for you. Every page is carefully arranged by our experts with clear layout and helpful knowledge to remember. With excellent quality at attractive price, our 1Z0-804 Tips exam questions get high demand of orders in this fierce market. You can just look at the data about the hot hit on the 1Z0-804 Tips study braindumps everyday, and you will know that how popular our 1Z0-804 Tips learning guide is. You cam familiarize yourself with our 1Z0-804 Tips practice materials and their contents in a short time.
Java and Middleware 1Z0-804 Now, our study materials are out of supply.
Our service staff will help you solve the problem about the 1Z0-804 - Java SE 7 Programmer II Exam Tips training materials with the most professional knowledge and enthusiasm. Therefore, our 1Z0-804 Trustworthy Practice study materials are attributive to high-efficient learning. The immediate downloading feature of our 1Z0-804 Trustworthy Practice study materials is an eminent advantage of our products.
Our 1Z0-804 Tips 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 Tips 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 Tips study guide or not.
Oracle 1Z0-804 Tips - The rate of return will be very obvious for you.
The society has an abundance of capable people and there is a keen competition. Don't you feel a lot of pressure? No matter how high your qualifications, it does not mean your strength forever. Qualifications is just a stepping stone, and strength is the cornerstone which can secure your status. Oracle 1Z0-804 Tips certification exam is a popular IT certification, and many people want to have it. With it you can secure your career. Omgzlook's Oracle 1Z0-804 Tips exam training materials is a good training tool. It can help you pass the exam successfully. With this certification, you will get international recognition and acceptance. Then you no longer need to worry about being fired by your boss.
Next, through my introduction, I hope you can have a deeper understanding of our 1Z0-804 Tips learning quiz. We really hope that our 1Z0-804 Tips practice engine will give you some help.
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 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: 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 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: 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
Microsoft AZ-305 - The curtain of life stage may be opened at any time, the key is that you are willing to show, or choose to avoid. SAP C-TS422-2023 - At home, you can use the computer and outside you can also use the phone. Cisco 820-605 - What's more important, you must choose the most effective exam materials that suit you. Oracle 1z0-1047-24 - There are no additional ads to disturb the user to use the Java SE 7 Programmer II Exam qualification question. SAP C_ARSUM_2404 - Even if you have a very difficult time preparing for the exam, you also can pass your exam successfully.
Updated: May 28, 2022