Looking for latest 1Z0-804 Dumps exam questions? You can pass the certification exam easily with our 1Z0-804 Dumps practice exam. With the help of our study guide, you will save lots of time to practice 1Z0-804 Dumps vce pdf and boost confidence in solving the difficult questions. Our training materials can help you learn about the knowledge points of 1Z0-804 Dumps exam collection and improve your technical problem-solving skills. You will be cast in light of career acceptance and put individual ability to display. When you apply for a job you could have more opportunities than others. You may get answers from other vendors, but our 1Z0-804 Dumps briandumps pdf are the most reliable training materials for your exam preparation.
Java and Middleware 1Z0-804 And then, you can learn anytime, anywhere.
Now you can learn 1Z0-804 - Java SE 7 Programmer II Exam Dumps skills and theory at your own pace and anywhere you want with top of the 1Z0-804 - Java SE 7 Programmer II Exam Dumps braindumps, you will find it's just like a pice a cake to pass 1Z0-804 - Java SE 7 Programmer II Exam Dumpsexam. And our content of the 1Z0-804 Reliable Source exam questions are based on real exam by whittling down superfluous knowledge without delinquent mistakes. At the same time, we always keep updating the 1Z0-804 Reliable Source training guide to the most accurate and the latest.
What's more, our customers’ care is available 24/7 for all visitors on our pages. You can put all your queries and get a quick and efficient response as well as advice of our experts on 1Z0-804 Dumps certification tests you want to take. Our professional online staff will attend you on priority.
Participate in the Oracle Oracle 1Z0-804 Dumps exam please.
Many people want to be the competent people which can excel in the job in some area and be skillful in applying the knowledge to the practical working in some industry. But the thing is not so easy for them they need many efforts to achieve their goals. Passing the test 1Z0-804 Dumps certification can make them become that kind of people and if you are one of them buying our 1Z0-804 Dumps study materials will help you pass the 1Z0-804 Dumps test smoothly with few efforts needed.
Not having enough time to prepare for their exam, many people give up taking IT certification exam. However, with the help of the best training materials, you can completely pass Oracle 1Z0-804 Dumps test in a short period of time.
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
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: 4
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: 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
CompTIA SY0-701 - When we are in some kind of learning web site, often feel dazzling, because web page design is not reasonable, put too much information all rush, it will appear desultorily. Juniper JN0-683 - Or you can choose to free update your exam dumps. AACN CCRN-Adult - Being considered the most authentic brand in this career, our professional experts are making unremitting efforts to provide our customers the latest and valid {CertName} exam simulation. After using our software, you will know that it is not too difficult to pass IBM C1000-112 exam. But we can help all of these candidates on Huawei H20-421_V1.0 study questions.
Updated: May 28, 2022