Now there are many IT professionals in the world and the competition of IT industry is very fierce. So many IT professionals will choose to participate in the IT certification exam to improve their position in the IT industry. 1Z0-854 exam is a very important Oracle's certification exam. But if you want to get a Oracle certification, you must pass the exam.
Life is full of choices. Selection does not necessarily bring you happiness, but to give you absolute opportunity. Once missed selection can only regret. IT-Tests.com's Oracle 1Z0-854 exam training materials are necessary to every IT person. With this materials, all of the problems about the Oracle 1Z0-854 will be solved. IT-Tests.com's Oracle 1Z0-854 exam training materials have wide coverage, and update speed. This is the most comprehensive training materials. With it, all the IT certifications need not fear, because you will pass the exam.
1Z0-854 is an Oracle certification exam, so 1Z0-854 is the first step to set foot on the road of Oracle certification. 1Z0-854 certification exam become more and more fiery and more and more people participate in 1Z0-854 exam, but passing rate of 1Z0-854 certification exam is not very high.When you select 1Z0-854 exam, do you want to choose an exam training courses?
Exam Code: 1Z0-854
Exam Name: Oracle (Java Standard Edition 5 Programmer Certified Professional Upgrade Exam)
IT-Tests.com has a huge team of IT experts, who continue to use their knowledge and experience to study a lot of IT certification examination papers of past few years. Their findings of the research is now the product of IT-Tests, therefore IT-Tests's Oracle 1Z0-854 practice questions are very similar with the real exam, which can help a lot of people to realize their dreams. IT-Tests.com can ensure you to successfully pass the exam, and you can boldly Add IT-Tests's products to your shopping cart. With IT-Tests.com your dreams can be achieved immediately.
1Z0-854 (Java Standard Edition 5 Programmer Certified Professional Upgrade Exam) Free Demo Download: http://www.it-tests.com/1Z0-854.html
NO.1 int value;
NO.2 public Hello(int value) {
NO.3 int c = super.multiply(a, b);
NO.4 Given:
1. interface TestA { String toString(); }
2. public class Test {
3. public static void main(String[] args) {
4. System.out.println(new TestA() {
5. public String toString() { return "test"; }
6. });
7. }
NO.5 }
What is the result?
A. Compilation fails because of an error in line 5.
B. A NullPointerException occurs at runtime.
C. Compilation fails because of an error in line 9.
D. A NumberFormatException occurs at runtime.
E. The value "4" is printed at the command line.
F. An IllegalStateException occurs at runtime.
Answer: B
Oracle exam 1Z0-854 study guide 1Z0-854 1Z0-854 braindump 1Z0-854
10.Given:
10. public class Hello {
11: String title;
NO.6 title = "Hello";
NO.7 Given:
20. public class CreditCard {
21.
22. private String cardID;
23. private Integer limit;
24. public String ownerName;
25.
26. public void setCardInformation(String cardID,
27. String ownerName,
28. Integer limit) {
29. this.cardID = cardID;
30. this.ownerName = ownerName;
31. this.limit = limit;
32. }
33. }
Which statement is true?
A. The ownerName variable breaks encapsulation.
B. The class is fully encapsulated.
C. The cardID and limit variables break polymorphism.
D. The code demonstrates polymorphism.
E. The setCardInformation method breaks encapsulation.
Answer: A
Oracle certification 1Z0-854 exam 1Z0-854 study guide 1Z0-854 practice test 1Z0-854
NO.8 public Hello() {
NO.9 DRAG DROP
Click the Task button. ?
Answer:
NO.10 Which two code fragments will execute the method doStuff() in a separate thread? (Choose two.)
A. new Thread() {
public void start() { doStuff(); }};
B. new Thread() {
public void run() { doStuff(); }};
C. new Thread(new Runnable() {
public void run() { doStuff(); }
}).start();
D. new Thread() {
public void start() { doStuff(); }
}.run();
E. new Thread(new Runnable() {
public void run() { doStuff(); }
}).run();
F. new Thread() {
public void run() { doStuff(); }
}.start();
Answer: C,F
Oracle 1Z0-854 test questions 1Z0-854 1Z0-854 pdf 1Z0-854 questions
NO.11 this.value = value;
NO.12 }
NO.13 }
What is the result?
A. null
B. An exception is thrown at runtime.
C. Compilation fails because of an error in line 5.
D. Compilation fails because of an error in line 4.
E. Compilation fails because of an error in line 1.
F. test
Answer: F
Oracle exam prep 1Z0-854 1Z0-854 questions 1Z0-854 exam dumps 1Z0-854 test answers 1Z0-854 braindump
8.DRAG DROP
Click the Task button.
Answer:
NO.14 Hello();
NO.15 return buffer.toString();
NO.16 }
Which statement is true?
A. This code will perform well and converting the code to use StringBuilder will not enhance the
performance.
B. This code will perform poorly. For better performance, the code should be rewritten: return "<" +
this.name + ">";
C. This code is NOT thread-safe.
D. The programmer can replace StringBuffer with StringBuilder with no other changes.
Answer: D
Oracle 1Z0-854 exam 1Z0-854 1Z0-854 1Z0-854
19.DRAG DROP
Click the Task button.
Answer:
20.Click the Exhibit button.
What two must the programmer do to correct the compilation errors? (Choose two.)
A. change the wheelCount variable in Car to protected
B. insert a call to this() in the MeGo constructor
C. insert a call to this() in the Car constructor
D. insert a call to super(vin) in the MeGo constructor
E. insert a call to super() in the MeGo constructor
F. change line 3 in the MeGo class to super.wheelCount = 3;
Answer: A,D
Oracle certification 1Z0-854 pdf 1Z0-854 answers real questions 1Z0-854 dumps 1Z0-854 exam 1Z0-854 exam simulations
NO.17 }
and:
30. Hello c = new Hello(5);
31: System.out.println(c.title);
What is the result?
A. The code runs with no output.
B. Hello
C. Hello World 5
D. Compilation fails.
E. An exception is thrown at runtime.
F. Hello World
Answer: D
Oracle test answers 1Z0-854 1Z0-854 questions 1Z0-854 1Z0-854 1Z0-854
11.Given:
10. class Line {
11. public class Point { public int x,y;}
12. public Point getPoint() { return new Point(); }
13. }
14. class Triangle {
15. public Triangle() {
16. // insert code here
17. }
18. }
Which code, inserted at line 16, correctly retrieves a local instance of a Point object?
A. Point p = (new Line()).getPoint();
B. Line.Point p = Line.getPoint();
C. Point p = Line.getPoint();
D. Line.Point p = (new Line()).getPoint();
Answer: D
Oracle certification training 1Z0-854 braindump 1Z0-854
12.Given:
11. // insert code here
12. private N min, max;
13. public N getMin() { return min; }
14. public N getMax() { return max; }
15. public void add(N added) {
16. if (min == null || added.doubleValue() < min.doubleValue())
17. min = added;
18. if (max == null || added.doubleValue() > max.doubleValue())
19. max = added;
20. }
21. }
Which two, inserted at line 11, will allow the code to compile? (Choose two.)
A. public class MinMax<?> {
B. public class MinMax<N extends Object> {
C. public class MinMax<N extends Integer> {
D. public class MinMax<? extends Object> {
E. public class MinMax<N extends Number> {
F. public class MinMax<? extends Number> {
Answer: C,E
Oracle original questions 1Z0-854 1Z0-854
13.A developer is creating a class Book, that needs to access class Paper. The Paper class is deployed in
a JAR named myLib.jar.
Which three, taken independently, will allow the developer to use the Paper class while compiling the
Book class? (Choose three.)
A. The JAR file is located at $JAVA_HOME/jre/classes/myLib.jar.
B. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -d
/foo/myLib.jar Book.java
C. The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that
includes /foo/myLib.jar/Paper.class.
D. The JAR file is located at $JAVA_HOME/jre/lib/ext/myLib.jar..
E. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -classpath
/foo/myLib.jar Book.java
F. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -cp
/foo/myLib.jar/Paper Book.java.
G. The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes
/foo/myLib.jar.
Answer: D,E,G
Oracle test questions 1Z0-854 1Z0-854 test 1Z0-854 answers real questions
14.Given:
10. public class SuperCalc {
11. protected static int multiply(int a, int b) { return a * b;}
12. }
and:
20. public class SubCalc extends SuperCalc{
21. public static int multiply(int a, int b) {
NO.18 }
NO.19 }
NO.20 Given:
12. import java.io.*;
13. public class Forest implements Serializable {
14. private Tree tree = new Tree();
15. public static void main(String [] args) {
16. Forest f = new Forest();
17. try {
18. FileOutputStream fs = new FileOutputStream("Forest.ser");
19. ObjectOutputStream os = new ObjectOutputStream(fs);
20. os.writeObject(f); os.close();
21. } catch (Exception ex) { ex.printStackTrace(); }
22. } }
23.
24. class Tree { }
What is the result?
A. An exception is thrown at runtime.
B. An instance of Forest is serialized.
C. An instance of Forest and an instance of Tree are both serialized.
D. Compilation fails.
Answer: A
Oracle 1Z0-854 test answers 1Z0-854 1Z0-854 test questions
NO.21 }
and:
30. SubCalc sc = new SubCalc ();
31. System.out.println(sc.multiply(3,4));
32. System.out.println(SubCalc.multiply(2,2));
What is the result?
A. Compilation fails because of an error in line 31.
B. The code runs with no output.
C. 12
D. Compilation fails because of an error in line 22.
E. An exception is thrown at runtime.
F. Compilation fails because of an error in line 21.
Answer: D
Oracle 1Z0-854 1Z0-854 original questions 1Z0-854
15.Given:
12. NumberFormat nf = NumberFormat.getInstance();
13. nf.setMaximumFractionDigits(4);
14. nf.setMinimumFractionDigits(2);
15. String a = nf.format(3.1415926);
16. String b = nf.format(2);
Which two statements are true about the result if the default locale is Locale.US? (Choose two.)
A. The value of a is 3.1415.
B. The value of a is 3.14.
C. The value of a is 3.141.
D. The value of b is 2.
E. The value of b is 2.0000.
F. The value of a is 3.1416.
G. The value of b is 2.00.
Answer: F,G
Oracle study guide 1Z0-854 1Z0-854 certification 1Z0-854
16.Click the Exhibit button.
Which statement is true about the two classes?
A. Compilation of class B will fail. Compilation of class A will succeed.
B. Compilation of class A will fail. Compilation of class B will succeed.
C. Compilation of both classes will fail.
D. Compilation of both classes will succeed.
Answer: A
Oracle original questions 1Z0-854 1Z0-854 exam prep
17.Given:
11. class ClassA {}
12. class ClassB extends ClassA {}
13. class ClassC extends ClassA {}
and:
21. ClassA p0 = new ClassA();
22. ClassB p1 = new ClassB();
23. ClassC p2 = new ClassC();
24. ClassA p3 = new ClassB();
25. ClassA p4 = new ClassC();
Which three are valid? (Choose three.)
A. p2 = p4;
B. p2 = (ClassC)p1;
C. p0 = p1;
D. p2 = (ClassC)p4;
E. p1 = p2;
F. p1 = (ClassB)p3;
Answer: C,D,F
Oracle exam simulations 1Z0-854 1Z0-854 1Z0-854 pdf 1Z0-854
18.Given this method in a class:
21. public String toString() {
22. StringBuffer buffer = new StringBuffer();
23. buffer.append('<');
24. buffer.append(this.name);
25. buffer.append('>');
NO.22 Which three statements concerning the use of the java.io.Serializable interface are true? (Choose
three.)
A. Objects from classes that use aggregation cannot be serialized.
B. The values in fields with the transient modifier will NOT survive serialization and deserialization.
C. It is legal to serialize an object of a type that has a supertype that does NOT implement
java.io.Serializable.
D. The values in fields with the volatile modifier will NOT survive serialization and deserialization.
E. An object serialized on one JVM can be successfully deserialized on a different JVM.
Answer: B,C,E
Oracle 1Z0-854 test answers 1Z0-854 exam 1Z0-854
NO.23 DRAG DROP
Click the Task button.
Answer:
NO.24 Given:
1. public class Boxer1{
2. Integer i;
3. int x;
4. public Boxer1(int y) {
5. x = i+y;
6. System.out.println(x);
7. }
8. public static void main(String[] args) {
9. new Boxer1(new Integer(4));
NO.25 title += " World";
NO.26 return c;
NO.27 }
IT-Tests.com provide different training tools and resources to prepare for the Oracle 1Z0-854 exam. The preparation guide includes courses, practice test, test engine and part free PDF download.
没有评论:
发表评论