Java and Middleware 1z0-808 Practice Test Engine: Try These 225 Exam Questions
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NEW QUESTION 45
Given the definitions of the MyString class and the Test class:
What is the result?
- A. Option C
- B. Option D
- C. Option B
- D. Option A
Answer: A
NEW QUESTION 46
Given the code fragment:
Which code fragment, inserted at line n1, pints The Top element: 30?
- A. Option E
- B. Option C
- C. Option D
- D. Option B
- E. Option A
Answer: B
NEW QUESTION 47
Given:
public class ColorTest {
public static void main(String[] args) {
String[] colors = {"red", "blue","green","yellow","maroon","cyan"};
int count = 0;
for (String c : colors) {
if (count >= 4) {
break;
}
else {
continue;
}
if (c.length() >= 4) {
colors[count] = c.substring(0,3);
}
count++;
}
System.out.println(colors[count]);
}
}
What is the result?
- A. Maroon
- B. Compilation fails
- C. A StringIndexOutOfBoundsException is thrown at runtime.
- D. Yellow
Answer: B
Explanation:
The line, if (c.length() >= 4) {, is never reached. This causes a compilation error.
Note: The continue statement skips the current iteration of a for, while , or do-while loop. An unlabeled break statement terminates the innermost switch, for, while, or do-while statement, but a labeled break terminates an outer statement.
NEW QUESTION 48
Given:
And given the commands:
What is the result?
- A. Java SE
- B. A NullPointerException is thrown at runtime.
- C. Java EE
- D. Compilation fails at line n1.
Answer: C
NEW QUESTION 49
Given:
What is the result?
- A. Two
- B. Compilation fails
- C. One
- D. Three
Answer: B
NEW QUESTION 50
Which three statements are true about the structure of a Java class?
- A. A public class must have a main method.
- B. A class can have only one private constructor.
- C. The methods are mandatory components of a class.
- D. The fields need not be initialized before use.
- E. A method can have the same name as a field.
- F. A class can have overloaded static methods.
Answer: A,C,E
NEW QUESTION 51
Given:
What is the result?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION 52
Given the definitions of the MyString class and the Test class:
What is the result?
- A. Option E
- B. Option C
- C. Option B
- D. Option A
- E. Option D
Answer: E
NEW QUESTION 53
You are asked to create a method that accepts an array of integers and returns the highest value from that array.
Given the code fragment:
Which method signature do you use at line n1?
- A. static int findMax (int [] numbers)
- B. final int findMax (int [] )
- C. public int findMax (int [] numbers)
- D. static int[] findMax (int max)
Answer: C
NEW QUESTION 54
Given:
What is the result?
- A. true, false
- B. false, false
- C. false, true
- D. true, true
Answer: C
NEW QUESTION 55
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 = str1;
- C. String str2 = "Duke";
- D. String str2 = sb1. toString ();
Answer: B
NEW QUESTION 56
Given: What is the result?
- A. Third Exception
- B. First Exception Done
- C. 0 Done
- D. Second Exception
- E. Done Third Exception
Answer: B
NEW QUESTION 57
Given:
The class is poorly encapsulated. You need to change the circle class to compute and return the area instead.
Which two modifications are necessary to ensure that the class is being properly encapsulated?
- A. Remove the area field.
- B. Change the getArea( ) method as follows:
public double getArea ( ) { return Match.PI * radius * radius; } - C. Add the following method:
public double getArea ( ) {area = Match.PI * radius * radius; } - D. Change the cacess modifier of the SerRadius ( ) method to be protected.
Answer: B,D
NEW QUESTION 58
Given the following class:
Which three pieces of code, when inserted independently, set the value of amount to 100?
A:
B:
C:
D:
E:
F:
- A. Option E
- B. Option C
- C. Option F
- D. Option B
- E. Option A
- F. Option D
Answer: A,B,F
NEW QUESTION 59
Given the code fragment:
What is the result?
- A. Element 0Element 1
- B. A NullPointerException is thrown at runtime.
- C. NullNull
- D. Null element 0Null element 1
Answer: B
NEW QUESTION 60
Given the code fragment:
Which code fragment, inserted at line n1, pints The Top element: 30?
- A. Option E
- B. Option D
- C. Option C
- D. Option B
- E. Option A
Answer: E
NEW QUESTION 61
Given this code for a Planetobject:
What is the output?
- A.
- B.
- C.
- D.
- E.
Answer: E
NEW QUESTION 62
Given:
And given the commands:
What is the result?
- A. Java SE
- B. A NullPointerException is thrown at runtime.
- C. Java EE
- D. Compilation fails at line n1.
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION 63
Given the code fragment:
What is the result?
- A. Compilation fails.
- B. 10 : 10
- C. 5 : 5
- D. 5 : 10
Answer: B
Explanation:
Explanation/Reference:
Reference:
NEW QUESTION 64
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