Latest 1z0-808 Exam Dumps Oracle Exam from Training Expert TestKingsIT
Pass Oracle Java SE 8 Programmer I PDF Dumps | Recently Updated 225 Questions
NEW QUESTION 47
Which statement will empty the contents of a StringBuilder variable named sb?
- A. sb. removeAll ();
- B. sb. delete (0, sb. size () );
- C. sb. delete (0, sb. length () );
- D. sb. deleteAll ();
Answer: C
NEW QUESTION 48
The following grid shows the state of a 2D array:
This grid is created with the following code:
Which line of code, when inserted in place of //line n1, adds an X into the grid so that the grid contains three consecutive X's?
- A. grid[2][0] = 'X';
- B. grid[0][2] = 'X';
- C. grid[3][1] = 'X';
- D. grid[1][3] = 'X';
- E. grid[1][2] = 'X';
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION 49
Given:
What is the result?
- A. Three
- B. Two
- C. Compilation fails
- D. One
Answer: A
Explanation:
In this scenario the overloading method is called with a double/float value, 4.0. This makes the third overload method to run.
Note: The Java programming language supports overloading methods, and Java can distinguish between methods with different method signatures. This means that methods within a class can have the same name if they have different parameter lists. Overloaded methods are differentiated by the number and the type of the arguments passed into the method.
NEW QUESTION 50
Given the code fragment:
What is the result?
- A. Option C
- B. Option B
- C. Option D
- D. Option A
Answer: A
NEW QUESTION 51
Given the code fragment:
Which two code fragments can be independently inserted at line n1 to enable the code to print the elements of the array in reverse order? (Choose two.)
- A.
- B.
- C.
- D.
- E.
Answer: A,E
NEW QUESTION 52
Given:
What is the result?
Base
- A. DerivedA
Base - B. DerivedB
DerivedB - C. DerivedB
DerivedA - D. DerivedB
- E. A ClassCastExceptionis thrown at runtime.
Answer: C
NEW QUESTION 53
Given the code fragment:
Which code fragment, when inserted at line 9, enables the code to print true?
- A. String str2 = new String (str1);
- B. String str2 = sb1. toString ();
- C. String str2 = "Duke";
- D. String str2 = str1;
Answer: A
NEW QUESTION 54
Given:
What is the result?
- A. A NullPointerException is thrown at runtime
- B. True false
- C. True null
- D. Compilation fails
Answer: B
NEW QUESTION 55
Given:
- A. a, e o, o
- B. a, e i, o
- C. e, e o, o
- D. e, e I, o
Answer: A
NEW QUESTION 56
Given the code fragment:
Which option can replace xxx to enable the code to print 135?
- A. int e = 0; e < = 4; e++
- B. int e = 0; e < 5; e + = 2
- C. int e = 1; e < = 5; e + = 1
- D. int e = 1; e < 5; e+ =2
Answer: B
NEW QUESTION 57
Given:
What is the result?
- A. 9 25
- B. 3 5
- C. Compilation fails.
- D. 0 0
Answer: B
NEW QUESTION 58
Which three statements are true about the structure of a Java class? (Choose three.)
- A. Fields need to be initialized before use.
- B. A class can have final static methods.
- C. A class cannot have the same name as its field.
- D. A class can have overloaded private constructors.
- E. Methods and fields are optional components of a class.
- F. A public class must have a main method.
Answer: A,D,F
NEW QUESTION 59
Given:
And given the code fragment:
What is the result?
- A. 200:300
200:300 - B. 300:300
200:300 - C. 300:100
200:300 - D. 300:0
0:300
Answer: C
NEW QUESTION 60
Given the code fragment:
What is the result?
- A. An exception is thrown at runtime.
- B. 07-31-2014
- C. 2014-09-30
- D. 2014-07-31
Answer: A
NEW QUESTION 61
Given the code fragment:
Which code fragment prints red: blue: small: medium?
- A. Option B
- B. Option C
- C. Option A
- D. Option D
Answer: D
NEW QUESTION 62
Given the code fragment:
What is the result?
- A. true true
- B. false false
- C. true false
- D. false true
Answer: B
NEW QUESTION 63
Which statement initializes a stringBuilder to a capacity of 128?
- A. StringBuilder sb = StringBuilder.getInstance (128);
- B. StringBuilder sb = new String ("128");
- C. StringBuilder sb = new StringBuilder (128);
- D. StringBuilder sb = StringBuilder.setCapacity (128);
Answer: C
Explanation:
StringBuilder(int capacity) Constructs a string builder with no characters in it and an initial capacity specified by the capacity argument. Note: An instance of a StringBuilder is a mutable sequence of characters. The principal operations on a StringBuilder are the append and insert methods, which are overloaded so as to accept data of any type. Each effectively converts a given datum to a string and then appends or inserts the characters of that string to the string builder. The append method always adds these characters at the end of the builder; the insert method adds the characters at a specified point.
NEW QUESTION 64
Given the code fragment:
What is the result?
- A. The code fails to compile because a throws keyword is required.
- B. Execution terminates in the first catch statement, and Caught a RuntimeException is printed to the console.
- C. A runtime error is thrown in the thread "main".
- D. Execution completes normally, and Ready to use is printed to the console.
- E. Execution terminates in the second catch statement, and Caught an Exception is printed to the console.
Answer: C
NEW QUESTION 65
Given:
And:
What is the result?
- A. Option A
- B. Option B
- C. Option D
- D. Option C
Answer: A
Explanation:
NEW QUESTION 66
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