Not only we offer the best 1Z0-804 Practice Exam Online training prep, but also our sincere and considerate attitude is praised by numerous of our customers. To cope with the fast growing market, we will always keep advancing and offer our clients the most refined technical expertise and excellent services about our 1Z0-804 Practice Exam Online exam questions. In the meantime, all your legal rights will be guaranteed after buying our 1Z0-804 Practice Exam Online study materials. Our company committed all versions of 1Z0-804 Practice Exam Online practice materials attached with free update service. When 1Z0-804 Practice Exam Online exam preparation has new updates, the customer services staff will send you the latest version. You will come across almost all similar questions in the real 1Z0-804 Practice Exam Online exam.
Java and Middleware 1Z0-804 You can learn anytime, anywhere.
Java and Middleware 1Z0-804 Practice Exam Online - Java SE 7 Programmer II Exam In modern society, we are busy every day. Why is that? The answer is that you get the certificate. What certificate? Certificates are certifying that you have passed various qualifying examinations.
Don't you think it is quite amazing? Just come and have a try! You may find that there are a lot of buttons on the website which are the links to the information that you want to know about our 1Z0-804 Practice Exam Online exam braindumps. Also the useful small buttons can give you a lot of help on our 1Z0-804 Practice Exam Online study guide.
Oracle 1Z0-804 Practice Exam Online - You do not need to study day and night.
Our 1Z0-804 Practice Exam Online exam prep will give you a complete after-sales experience. You can consult online no matter what problems you encounter. You can get help anywhere, anytime in our 1Z0-804 Practice Exam Online test material. 1Z0-804 Practice Exam Online test questions have very high quality services in addition to their high quality and efficiency. If you use 1Z0-804 Practice Exam Online test material, you will have a very enjoyable experience while improving your ability. We have always advocated customer first. If you use our learning materials to achieve your goals, we will be honored. 1Z0-804 Practice Exam Online exam prep look forward to meeting you.
Our ability of improvement is stronger than others. New trial might change your life greatly.
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.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 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
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.
HP HP2-I63 - As you know, we are now facing very great competitive pressure. IBM C1000-178 - But you must have a browser on your device. Let’s learn SAP C-IEE2E-2404 exam dumps, and you can pass the exam at once. There may be a lot of people feel that the preparation process for WGU Organizational-Behaviors-and-Leadership exams is hard and boring, and hard work does not necessarily mean good results, which is an important reason why many people are afraid of examinations. Our Palo Alto Networks PCNSC real exam try to ensure that every customer is satisfied, which can be embodied in the convenient and quick refund process.
Updated: May 28, 2022