You must be inspired by your interests and motivation. Once you print all the contents of our 1Z0-804 Exam Outline practice dumps on the paper, you will find what you need to study is not as difficult as you imagined before. Also, you can make notes on your papers to help you memorize and understand the difficult parts of the 1Z0-804 Exam Outline exam questions. We always adhere to the principle of “mutual development and benefit”, and we believe our 1Z0-804 Exam Outline practice materials can give you a timely and effective helping hand whenever you need in the process of learning our 1Z0-804 Exam Outline study braindumps. For we have been in this career over ten years and we are good at tracing the changes of the 1Z0-804 Exam Outline guide prep in time and update our exam dumps fast and accurately. With the pass rate high as 98% to 100%, you can totally rely on our 1Z0-804 Exam Outline exam questions.
Java and Middleware 1Z0-804 You’ve heard it right.
So 1Z0-804 - Java SE 7 Programmer II Exam Exam Outline practice materials come within the scope of our business activities. You can totally rely on us! We never concoct any praise but show our capacity by the efficiency and profession of our 1Z0-804 Latest Test Dumps File practice materials.
1Z0-804 Exam Outline study engine is very attentive to provide a demo for all customers who concerned about our products, whose purpose is to allow customers to understand our product content before purchase. Many students suspect that if 1Z0-804 Exam Outline learning material is really so magical? Does it really take only 20-30 hours to pass such a difficult certification exam successfully? It is no exaggeration to say that you will be able to successfully pass the exam with our 1Z0-804 Exam Outline exam questions.
Oracle 1Z0-804 Exam Outline - So customer orientation is the beliefs we honor.
Our Java SE 7 Programmer II Exam study question is compiled and verified by the first-rate experts in the industry domestically and they are linked closely with the real exam. Our products’ contents cover the entire syllabus of the exam and refer to the past years’ exam papers. Our test bank provides all the questions which may appear in the real exam and all the important information about the exam. You can use the practice test software to test whether you have mastered the Java SE 7 Programmer II Exam test practice dump and the function of stimulating the exam to be familiar with the real exam’s pace, atmosphere and environment. So our 1Z0-804 Exam Outline exam questions are real-exam-based and convenient for the clients to prepare for the exam.
Besides, the pass rate of our 1Z0-804 Exam Outline exam questions are unparalled high as 98% to 100%, you will get success easily with our help. There are so many features to show that our 1Z0-804 Exam Outline study guide surpasses others.
1Z0-804 PDF DEMO:
QUESTION NO: 1
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: 2
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: 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.
SAP C-S4TM-2023 - We can guarantee that the study materials from our company will help you pass the exam and get the certification in a relaxed and efficient method. SAP C_THR92_2405 - This is hard to find and compare with in the market. We are attested that the quality of the MuleSoft MCIA-Level-1 test prep from our company have won great faith and favor of customers. Since our SAP C-S43-2023 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. Adobe AD0-E207 - We will soon solve your problems at the first time.
Updated: May 28, 2022