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NO.1 Which three statements are true about the Linux swap file system? (Choose three.)
A. The Linux user data cannot be written to the Linux swap space.
B. High-priority swap spaces would be exhausted only after exhausting swap spaces with equal priorities.
C. The Linux kernel code and data are not swappable and are never moved to swap file system from
physical memory.
D. If too much space is allocated for swap, errant programs may run for an extended time and use up
RAM and swap space.
E. When most of the system's real memory is in use, and there is a need for more, some data would be
moved into the swap file system to free real RAM memory for use by applications or for kernel use, such
as for driver buffers, files, or network packets.
Answer: CDE

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NO.2 You want to make Oracle Enterprise Linux coexist with Microsoft Windows on your machine. You
install Oracle Enterprise Linux first with the default boot loader configuration and then install Microsoft
WindowsXP. You reboot the system after installation and the system boots directly into the Windows
operating system without showing the Grand Unified Boot Loader (GRUB) menu.
Which two steps could you have taken to avoid this situation? (Choose two.)
A. Install Oracle Enterprise Linux first with the boot loader on MBR and then install Microsoft WindowsXP.
B. Install Microsoft WindowsXP first and then install Oracle Enterprise Linux with the boot loader on
Master Boot Record (MBR).
C. Install Microsoft WindowsXP first and then install Oracle Enterprise Linux with the boot loader at the
first sector of the /boot partition.
D. Install Oracle Enterprise Linux first with the boot loader at the first sector of the /boot partition and then
install Microsoft WindowsXP.
Answer: BC

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NO.3 You have server1 configured as the Virtual Network Computing (VNC) server. There is no firewall
between server1 and station1. You have logged on to station1 as root and want to connect to server1
using VNC. You issue the following command:
[root@station1]# vncviewer server1.2
Which statement is true?
A. server1 provides an encrypted connection to station1.
B. The xinetd service on station1 is not mandatory for the VNC connection.
C. The desktop of server1 is shared with station1 without prompting for a password.
D. station1 is prompted for a password and the desktop of server1 is shared with station1 only when the
correct password is entered.
Answer: D

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NO.4 You are currently working in runlevel 3. The X server is configured correctly and the default runlevel is
set to 5 in the /etc/inittab file. To find the default desktop you issue the following command:
[root@server1]#cat /etc/sysconfig/desktop
[root@server1]#
You find the file empty. What will be the effect when you try to go to the runlevel 5?
A. The system defaults to kdm and launch KDE.
B. The system defaults to xdm and launch GNOME.
C. The system defaults to gdm and launch GNOME
D. The system will fail to log into the graphical mode.
Answer: C

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NO.5 You want to install the ieee80211 module on your Linux system. While building the module, you receive
the following error:
Make [2]: *** [ieee 80211-1.2.17/ieee80211_module.o] Error 1
Make [1]: *** [_module_/ieee80211-1.2.17] Error 2
Make [1]: Leaving directory '/usr/src/kernels/2.6.9-42.0.0.0.1.EL-i686'
Make: *** [modules] Error 2
What do you infer from this error?
A. The ieee80211 module conflicts with the current kernel version.
B. The dependency modules for ieee80211 are not installed on the system.
C. The ieee80211 module given is not supported by the machine architecture.
D. The kernel source package, which must be installed to compile external device drivers, is not installed
on the system.
Answer: D

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NO.6 While importing user accounts in bulk along with passwords using the newusers command, you noticed
that user passwords are saved in the /etc/shadow file in the crypt format.
How would you enable the newusers command to use the preferred MD5 format when writing passwords
to the /etc/shadow file?
A. Add the MD5_ENAB=yes line to the /etc/login.defs file.
B. Add the MD5_CRYPT yes line to the /etc/login.defs file.
C. Add the MD5_CRYPT_ENAB yes line to the /etc/login.defs file.
D. Add the MD5_CRYPT_ENAB yes line to the /etc/security/limits.conf file.
Answer: C

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NO.7 Identify two true statements about Virtual Network Computing (VNC). (Choose two.)
A. It is a client/server application.
B. It allows entire desktops to be displayed remotely.
C. It does not provide any protection to remote X connections.
D. It allows applications to be run remotely and displayed only locally.
E. It is used to connect to a remote Linux machine only from a Linux machine.
Answer: AB

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NO.8 You are logged in to server1 and want to allow remote connections to server1 through X Display
Manager Control Protocol (XDMCP). You change the entry "Enable=false" to "Enable=true" in the
"[xdmcp]" section of the gdm.conf configuration file.
To test the XDMCP configuration, you log in to station1 as smith and try to connect to server1 by using the
following command:
[smith@station1]$ X -query server1.example.com :1
What is the result?
A. A connection to the gdm display manager on server1.example.com would be established using direct
XDMCP.
B. A connection to the xdm display manager on server1.example.com would be established using direct
XDMCP.
C. A connection to the gdm display manager on server1.example.com would be established using indirect
XDMCP.
D. A connection to the xdm display manager on server1.example.com would be established using indirect
XDMCP.
Answer: A

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Exam Code: 1Z0-854
Exam Name: Oracle (Java Standard Edition 5 Programmer Certified Professional Upgrade Exam)
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Total Q&A: 138 Questions and Answers
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NO.1 }
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

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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

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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

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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

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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.2 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.3 }

NO.4 return c;

NO.5 int c = super.multiply(a, b);

NO.6 DRAG DROP
Click the Task button. ?
Answer:

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

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NO.8 }
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

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10.Given:
10. public class Hello {
11: String title;

NO.9 }
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

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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

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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

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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

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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.10 }

NO.11 }
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

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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

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NO.12 return buffer.toString();

NO.13 int value;

NO.14 public Hello() {

NO.15 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

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NO.16 Hello();

NO.17 title += " World";

NO.18 }

NO.19 DRAG DROP
Click the Task button.
Answer:

NO.20 public Hello(int value) {

NO.21 }
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

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8.DRAG DROP
Click the Task button.
Answer:

NO.22 }

NO.23 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.24 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

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NO.25 this.value = value;

NO.26 title = "Hello";

NO.27 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

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Exam Code: 1Z0-854

Exam Name: Oracle (Java Standard Edition 5 Programmer Certified Professional Upgrade Exam)

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NO.1 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

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NO.2 return buffer.toString();

NO.3 int value;

NO.4 }

NO.5 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

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NO.6 DRAG DROP
Click the Task button.
Answer:

NO.7 title = "Hello";

NO.8 int c = super.multiply(a, b);

NO.9 return c;

NO.10 DRAG DROP
Click the Task button. ?
Answer:

NO.11 public Hello() {

NO.12 title += " World";

NO.13 }

NO.14 Hello();

NO.15 }
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 answers real questions   1Z0-854   1Z0-854   1Z0-854   1Z0-854 test questions
8.DRAG DROP
Click the Task button.
Answer:

NO.16 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.17 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.18 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   1Z0-854 demo   1Z0-854   1Z0-854 test answers

NO.19 }

NO.20 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

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NO.21 }
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 practice test   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   1Z0-854   1Z0-854 practice test

NO.22 }
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 original questions   1Z0-854   1Z0-854 demo   1Z0-854   1Z0-854 demo
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   1Z0-854 exam   1Z0-854   1Z0-854   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 exam   1Z0-854   1Z0-854 pdf   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 study guide   1Z0-854   1Z0-854
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.23 }
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 test   1Z0-854 certification   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 exam prep   1Z0-854 test   1Z0-854   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   1Z0-854   1Z0-854   1Z0-854   1Z0-854
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 original questions   1Z0-854 exam dumps   1Z0-854 original questions   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.24 public Hello(int value) {

NO.25 this.value = value;

NO.26 }
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   1Z0-854   1Z0-854   1Z0-854
10.Given:
10. public class Hello {
11: String title;

NO.27 }

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Exam Code: 1Z0-854

Exam Name: Oracle (Java Standard Edition 5 Programmer Certified Professional Upgrade Exam)

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NO.1 Hello();

NO.2 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

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NO.3 int value;

NO.4 }
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 exam dumps   1Z0-854   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 questions   1Z0-854   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

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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 dumps   1Z0-854   1Z0-854 test questions   1Z0-854 questions
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.5 return buffer.toString();

NO.6 this.value = value;

NO.7 }
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

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8.DRAG DROP
Click the Task button.
Answer:

NO.8 }
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   1Z0-854   1Z0-854 exam   1Z0-854 original questions
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   1Z0-854 exam dumps   1Z0-854

NO.9 return c;

NO.10 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   1Z0-854 study guide   1Z0-854

NO.11 public Hello(int value) {

NO.12 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 certification   1Z0-854 practice test   1Z0-854

NO.13 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.14 }

NO.15 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.16 }

NO.17 public Hello() {

NO.18 }

NO.19 }
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   1Z0-854 test answers   1Z0-854 test   1Z0-854 pdf
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 questions   1Z0-854 exam simulations   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 pdf   1Z0-854   1Z0-854 test answers   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 dumps   1Z0-854   1Z0-854 braindump
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.20 title = "Hello";

NO.21 DRAG DROP
Click the Task button. ?
Answer:

NO.22 int c = super.multiply(a, b);

NO.23 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 study guide   1Z0-854 original questions   1Z0-854   1Z0-854   1Z0-854   1Z0-854 original questions

NO.24 }
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   1Z0-854 questions   1Z0-854 exam
10.Given:
10. public class Hello {
11: String title;

NO.25 }

NO.26 DRAG DROP
Click the Task button.
Answer:

NO.27 title += " World";

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