NEW QUESTION 1
Which code fragment is illegal?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: D

Explanation: The abstract keyword cannot be used to declare an int variable.
The abstract keyword is used to declare a class or method to beabstract[3]. An abstract method has no implementation; all classes containing abstract methods must themselves be abstract, although not all abstract classes have abstract methods.

NEW QUESTION 2
Given:

What is the result?

• A. 6564
• B. 6554
• C. 6566
• D. 6565

Answer: A

Explanation: Within main z is assigned 6. z is printed. Output: 6
Within doStuff z is assigned 5.DoStuff2 locally sets z to 4 (but MyScope.z is set to 4), but in Dostuff z is still 5. z is printed. Output: 5
Again z is printed within main (with local z set to 6). Output: 6
Finally MyScope.z is printed. MyScope.z has been set to 4 within doStuff2(). Output: 4

NEW QUESTION 3
Which two statements are true?

• A. An abstract class can implement an interface.
• B. An abstract class can be extended by an interface.
• C. An interface CANNOT be extended by another interface.
• D. An interface can be extended by an abstract class.
• E. An abstract class can be extended by a concrete class.
• F. An abstract class CANNOT be extended by an abstract class.

Answer: AE

Explanation: http://docs.oracle.com/javase/tutorial/java/IandI/abstract.html

NEW QUESTION 4
public class ForTest {
public static void main(String[] args) { int[] arrar= {1,2,3};
for ( foo ) {
}
}
}
Which three are valid replacements for foo so that the program will compiled and run?

• A. int i: array
• B. int i = 0; i < 1; i++
• C. ;;
• D. ; i < 1; i++
• E. ; i < 1;

Answer: ABC

NEW QUESTION 5
Given the code fragment:
for (int ii = 0; ii < 3;ii++) { int count = 0;
for (int jj = 3; jj > 0; jj--) { if (ii == jj) {
++count; break;
}
}
System.out.print(count); continue;
}
What is the result?

• A. 011
• B. 012
• C. 123
• D. 000

Answer: A

NEW QUESTION 6
Identify two benefits of using ArrayList over array in software development.

• A. reduces memory footprint
• B. implements the Collection API
• C. is multi.thread safe
• D. dynamically resizes based on the number of elements in the list

Answer: AD

Explanation: ArrayList supports dynamic arrays that can grow as needed. In Java, standard arrays are of a fixed length. After arrays are created, they cannot grow or shrink, which means that you must know in advance how many elements an array will hold. But, sometimes, you may not know until run time precisely how large of an array you need. To handle this situation, the collections framework defines ArrayList. In essence, an ArrayList is a variable-length array ofobject references. That is, an ArrayList can dynamically increase or
decrease in size. Array lists are created with an initial size. When this size is exceeded, the collection is automatically enlarged. When objects are removed, the array may be shrunk.

NEW QUESTION 7
Given:

Which two code fragments are valid?

• A. Option A
• B. Option B
• C. Option C
• D. Option D
• E. Option E

Answer: BC

Explanation: When an abstract class is subclassed, the subclass usually provides implementations for all of the abstract methods in its parent class (C). However, if it does not, thenthe subclass must also be declared abstract (B).
Note: An abstract class is a class that is declared abstract—it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed.

NEW QUESTION 8
Given:
public class Test {
public static void main(String[] args) { try {
String[] arr =new String[4]; arr[1] = "Unix";
arr[2] = "Linux"; arr[3] = "Solarios"; for (String var : arr) {
System.out.print(var + " ");
}
} catch(Exception e) { System.out.print (e.getClass());
}
}
}
What is the result?

• A. Unix Linux Solaris
• B. Null Unix Linux Solaris
• C. Class java.lang.Exception
• D. Class java.lang.NullPointerException

Answer: B

Explanation: null Unix Linux Solarios
The first element, arr[0], has not been defined.

NEW QUESTION 9
Given:

What is the result?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: C

NEW QUESTION 10
The protected modifier on a Field declaration within a public class means that the field _______.

• A. Cannot be modified
• B. Can be read but not written from outside the class
• C. Can be read and written from this class and its subclasses only within the same package
• D. Can be read and written from this class and its subclasses defined in any package

Answer: D

Explanation: Reference:
http://beginnersbook.com/2013/05/java-access-modifiers/

NEW QUESTION 11
Given:
public class MyFor {
public static void main(String[] args) {
for (int ii = 0; ii < 4; ii++) { System.out.println("ii = "+ ii); ii = ii +1;
}
}
}
What is the result?

• A. ii = 0 ii = 2
• B. ii =0ii = 1ii = 2ii = 3
• C. ii =
• D. Compilation fails.

Answer: A

NEW QUESTION 12
Given the code fragment:
int b = 3;
if ( !(b > 3)) {
System.out.println("square ");
}{
System.out.println("circle ");
}
System.out.println("..."); What is the result?

• A. square...
• B. circle...
• C. squarecircle...
• D. Compilation fails.

Answer: C

NEW QUESTION 13
A method is declared to take three arguments. A program calls this method and passes only two arguments. What is the result?

• A. Compilation fails.
• B. The third argument is given the value null.
• C. The third argument is given the value void.
• D. The third argument is given the value zero.
• E. The third argument is given the appropriate false valuefor its declared type.
• F. An exception occurs when the method attempts to access the third argument.

Answer: A

Explanation: The problem is noticed at build/compile time. At build you would receive an error message like:
required: int,int,int found: int,int

NEW QUESTION 14
Given:

What is the result?

• A. The program prints nothing
• B. d
• C. A StringIndexOutOfBoundsException is thrown at runtime.
• D. AnArrayIndexOutOfBoundsException is thrown at runtime.
• E. A NullPointerException is thrown at runtime.

Answer: C

NEW QUESTION 15
Given:
class MarksOutOfBoundsException extends IndexOutOfBoundsException { }
public class GradingProcess {
void verify(int marks) throws IndexOutOfBoundsException { if (marks > 100) {
throw new MarksOutOfBoundsException();
}
if (marks > 50) { System.out.print("Pass");
} else { System.out.print("Fail");
}
}
public static void main(String[] args) { int marks = Integer.parseInt(args[2]); try {
new GradingProcess().verify(marks));
} catch(Exception e) { System.out.print(e.getClass());
}
}
}
And the command line invocation: Java grading process 89 50 104 What is the result?

• A. Pass
• B. Fail
• C. Class MarketOutOfBoundsException
• D. Class IndexOutOfBoundsException
• E. Class Exception

Answer: C

Explanation: The value 104 will cause a MarketOutOfBoundsException

NEW QUESTION 16
Given:
Class A { } Class B { }
Interface X { } Interface Y { }
Which two definitions of class C are valid?

• A. Class C extends A implements X { }
• B. Class C implements Y extends B { }
• C. Class C extends A, B { }
• D. Class C implements X, Y extends B { }
• E. Class C extends B implements X, Y { }

Answer: AE

Explanation: extends is for extending a class.
implements is for implementing an interface.
Java allows for a class to implement many interfaces.

NEW QUESTION 17
Given:

What is the result?

• A. 21
• B. 210
• C. null
• D. an infinite loop
• E. compilation fails

Answer: E

Explanation: The line while (--ii); will cause the compilation to fail. ii is not aboolean value.
A correct line would be while (--ii>0);

NEW QUESTION 18
Give:
Public Class Test {
}
Which two packages are automatically imported into the java source file by the java compiler?

• A. Java.lang
• B. Java.awt
• C. Java.util
• D. Javax.net
• E. Java.*
• F. The package with no name

Answer: AF

Explanation: For convenience, the Java compiler automatically imports three entire packages for each source file: (1) the package with no name, (2) the java.lang package, and (3) the current package (the package for the current file).
Note:Packages in the Java language itself begin withjava.orjavax.