If you need software versions please do not hesitate to obtain a copy from our customer service staff. If you use the Omgzlook Oracle 1Z0-804 Printable Pdf study materials, you can reduce the time and economic costs of the exam. It can help you to pass the exam successfully. 1Z0-804 Printable Pdf exam questions will help you reach the peak of your career. Just think of that after you get the 1Z0-804 Printable Pdf certification, you will have a lot of opportunities of going to biger and better company and getting higher incomes! Omgzlook allows you to have a bright future.
So are our 1Z0-804 Printable Pdf exam braindumps!
Java and Middleware 1Z0-804 Printable Pdf - Java SE 7 Programmer II Exam Also, we have our own research center and experts team. There are so many advantages of our Training 1Z0-804 For Exam actual exam, and you are welcome to have a try! We have put substantial amount of money and effort into upgrading the quality of our Training 1Z0-804 For Exam preparation materials, into our own Training 1Z0-804 For Exam sales force and into our after sale services.
Time is flying and the exam date is coming along, which is sort of intimidating considering your status of review process. The more efficient the materials you get, the higher standard you will be among competitors. So, high quality and high accuracy rate 1Z0-804 Printable Pdf practice materials are your ideal choice this time.
Oracle 1Z0-804 Printable Pdf - Select the materials is to choose what you want.
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 Printable Pdf certification can make them become that kind of people and if you are one of them buying our 1Z0-804 Printable Pdf study materials will help you pass the 1Z0-804 Printable Pdf test smoothly with few efforts needed.
It was a Xi'an coach byword that if you give up, the game is over at the same time. The game likes this, so is the exam.
1Z0-804 PDF DEMO:
QUESTION NO: 1
Given: javac Test.java java ea Test
And the commands:
What is the result?
A.Compilation fails
B.Standard Edition Enterprise Edition Micro Edition
C.Standard Edition class java.lang.AssertionError Micro Edition
D.Standard Edition is printed and an Assertion Error is thrown
Answer: D
Explanation:
javac Test.java
will compile the program.
As for command line:
java ea Test
First the code will produce the output:
Standard Edition
See Note below.
The ea option will enable assertions. This will make the following line in the switch statement to be run:
default: assert false;
This will throw an assertion error. This error will be caught. An the class of the assertion error
(class java.lang.AssertionError) will be printed by the following line:
System.out.println(e.getClass());
Note:The java tool launches a Java application. It does this by starting a Java runtime environment, loading a specified class, and invoking that class's main method. The method declaration must look like the following:
public static void main(String args[])
Paramater ea:
-enableassertions[:<package name>"..." | :<class name> ] -ea[:<package name>"..." | :<class name> ]
Enable assertions. Assertions are disabled by default. With no arguments, enableassertions or -ea enables assertions.
Note 2:
An assertion is a statement in the JavaTM programming language that enables you to test your assumptions about your program. Each assertion contains a boolean expression that you believe will be true when the assertion
executes. If it is not true, the system will throw an error.
public class AssertionError extends Error
Thrown to indicate that an assertion has failed.
Note 3:
The javac command compiles Java source code into Java bytecodes. You then use the Java interpreter - the
java command - to interprete the Java bytecodes.
Reference:java - the Java application launcher
Reference:java.langClass AssertionError
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
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.Null B D
B.Null B null D
C.B D
D.D
E.An exception is thrown at runtime
Answer: C
QUESTION NO: 5
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.
Absorbing the lessons of the ServiceNow CIS-CSM test prep, will be all kinds of qualification examination classify layout, at the same time on the front page of the ServiceNow CIS-CSM test materials have clear test module classification, so clear page design greatly convenient for the users, can let users in a very short period of time to find what they want to study, and then targeted to study. Fortinet NSE6_WCS-7.0 - Or you can choose to free update your exam dumps. SAP C-HRHPC-2405 - 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. You will find some exam techniques about how to pass Snowflake COF-C02 exam from the exam materials and question-answer analysis provided by our Omgzlook. But we can help all of these candidates on Cisco 350-601 study questions.
Updated: May 28, 2022