NEW QUESTION NO: 20
Given the code fragment:

What is the result?
A. Valid
B. Not valid
C. Compilation fails
D. An IllegalArgumentException is thrown at run time
Answer: C
Explanation/Reference:
Explanation:
In segment 'if (valid)' valid must be of type boolean, but it is a string.
This makes the compilation fail.

NEW QUESTION NO: 21
Given:

Which statement, when inserted into line 5, is valid change?
A. asc = sc;
B. sc = asc;
C. asc = (object) sc;
D. asc = sc.clone ()
Answer: B
Explanation/Reference:
Explanation:
Works fine.
Incorrect answers:
asc = sc.clone();
Incompatible types.
asc =sc;
Incompatible types.
asc = (object) sc;
Syntax error

NEW QUESTION NO: 22
Given:

What is the result?
A. 2
1
B. 2
1
0
C. null
D. an infinite loop
E. compilation fails
Answer: E
Explanation/Reference:
Explanation:
The line while (--ii); will cause the compilation to fail.
ii is not a boolean value.
A correct line would be while (--ii>0);

NEW QUESTION NO: 23
Given:

What is the result?
A. 11, 21, 31, 12, 22, 32
B. 12, 22, 32, 12, 22, 32
C. 11, 21, 31, 11, 21, 31
D. 10, 20, 30, 10, 20, 30
Answer: D

NEW QUESTION NO: 24
Which three statements are benefits of encapsulation?
A. Allows a class implementation to change without changing t he clients
B. Enables multiple instances of the same class to be created safely
C. Permits classes to be combined into the same package
D. Enables the class implementation to protect its invariants
E. Prevents code from causing exceptions
F. Protects confidential data from leaking out of the objects
Answer: A,D,F

NEW QUESTION NO: 25
Which three are advantages of the Java exception mechanism?
A. Improves the program structure because the error handling code is separated from the normal program function
B. Provides a set of standard exceptions that covers all the possible errors
C. Improves the program structure because the programmer can choose where to handle exceptions
D. Improves the program structure because exceptions must be handled in the method in which they occurred
E. allows the creation of new exceptions that are tailored to the particular program being
Answer: A,C,E
Explanation/Reference:
Explanation:
A: The error handling is separated from the normal program logic.
C: You have some choice where to handle the exceptions.
E: You can create your own exceptions.
Incorrect answers:
B: The standard exceptions do not cover all possible errors.
D. Exceptions do not need to be handled in the method where they occurred. They can be handled in the method which is calling the method that throws an exception.

NEW QUESTION NO: 26
Given:

Which two actions, used independently, will permit this class to compile?
A. Adding throws IOException to the main() method signature and to the dosomething() method
B. Adding throws IOException to the doSoomething() method signature
C. Adding throws IOException to the dosomething() method signature and changing the catch argument to IOException
D. Adding throws IOException to the main() method signature and changing the catch argument to IOException
E. Adding throws IOException to the main() method signature
Answer: A,C

NEW QUESTION NO: 27
Given:

What is result?
A. Unsuccessful
B. Successful
C. An exception is thrown at runtime
D. Compilation fails
Answer: D

NEW QUESTION NO: 28
Given the code fragments:

What is the result?
A. Compilation fails at line n2
B. Super
Sub
Sub
C. Compilation fails at line n1
D. Contract
Contract
Super
Answer: A

NEW QUESTION NO: 29
Given:

Why will the code not compile?
A. A static field cannot be private.
B. The getLetter method has no body.
C. There is no setLetter method.
D. The letter field is uninitialized.
E. It contains a method named Main instead of ma
Answer: B
Explanation/Reference:
Explanation:
The getLetter() method needs a body public static int getLetter() { }; .

NEW QUESTION NO: 30
Given the code fragment:

Which code fragment, when inserted at line // insert code here, enables class Test to print 123 : Fred :
[Java, C]?
A. private Student(int i, String name, List cs) {
/* initialization code goes here */
}
B. public void Student(int i, String name, List cs) {
/* initialization code goes here */
}
C. Student(int i, String name, List cs) {
/* initialization code goes here */
}
D. Student(int i, String name, ArrayList cs) {
/* initialization code goes here */
}
Answer: C
Explanation/Reference:
Incorrect:
Not A: Student has private access line: Student s = new Student(123,"Fred", cs); Not D: Cannot be applied to given types. Line: Student s = new Student(123,"Fred", cs);