NEW QUESTION 1
Given the code fragment:

What is the result?

• A. 28false29 true
• B. 285 < 429 true
• C. true true
• D. compilation fails

Answer: C

NEW QUESTION 2
Given:
public class TestOperator {
public static voidmain(String[] args) { int result = 30 -12 / (2*5)+1; System.out.print("Result = " + result);
}
}
What is the result?

• A. Result = 2
• B. Result = 3
• C. Result = 28
• D. Result = 29
• E. Result = 30

Answer: E

NEW QUESTION 3
Given:

How many objects have been created when the line / / do complex stuff is reached?

• A. Two
• B. Three
• C. Four
• D. Six

Answer: C

NEW QUESTION 4
Given the code format:

Which code fragment must be inserted at line 6 to enable the code to compile?

• A. DBConfiguration f; return f;
• B. Return DBConfiguration;
• C. Return new DBConfiguration;
• D. Retutn 0;

Answer: B

NEW QUESTION 5
Given:
public class Test1 {
static void doubling (Integer ref, int pv) { ref =20;
pv = 20;
}
public static void main(String[] args) { Integer iObj= new Integer(10);
int iVar = 10; doubling(iObj++, iVar++);
System.out.println(iObj+ ", "+iVar); What is the result?

• A. 11, 11
• B. 10, 10
• C. 21, 11
• D. 20, 20
• E. 11, 12

Answer: A

Explanation: The code doubling(iObj++, iVar++); increases both variables from to 10 to 11.

NEW QUESTION 6
Given:

What is the result?

• A. box
• B. nbo
• C. bo
• D. nb
• E. An exception is thrown at runtime

Answer: E

NEW QUESTION 7
View the Exhibit.
public class Hat { public int ID =0;
public String name = "hat";
public String size = "One Size Fit All";
public String color="";
public String getName() { return name; }
public void setName(String name) {
this.name = name;
}
}
Given
public class TestHat {
public static void main(String[] args) {
Hat blackCowboyHat = new Hat();
}
}
Which statement sets the name of the Hat instance?

• A. blackCowboyHat.setName = "Cowboy Hat";
• B. setName("Cowboy Hat");
• C. Hat.setName("Cowboy Hat");
• D. blackCowboyHat.setName("Cowboy Hat");

Answer: D

NEW QUESTION 8
Given the code fragment:
StringBuilder sb = new StringBuilder ( ) ; Sb.append (“world”);
Which code fragment prints Hello World?

• A. sb.insert(0,"Hello "); System.out.println(sb);
• B. sb.append(0,"Hello "); System.out.println(sb);
• C. sb.add(0,"Hello "); System.out.println(sb);
• D. sb.set(0,"Hello "); System.out.println(sb);D

Answer: A

Explanation: The java.lang.StringBuilder.insert(int offset, char c) method inserts the string representation of the char argument into this sequence.
The second argument is inserted into the contents of this sequence at the position indicated by offset. The length of this sequence increases by one.The offset argument must be greater than or equal to 0, and less than or equal to the length of this sequence.
Reference: Java.lang.StringBuilder.insert() Method

NEW QUESTION 9
Given:
package p1; public class Test {
static double dvalue; static Test ref;
public static void main(String[] args) { System.out.println(ref); System.out.println(dvalue);
}
}
What is the result?

• A. p1.Test.class 0.0
• B. <the summary address refrenced by ref> 0.000000
• C. Null 0.0
• D. Compilation fails
• E. A NullPointerException is thrown at runtime

Answer: C

NEW QUESTION 10
Given the fragment:

What is the result?

• A. 14
• B. 15
• C. 24
• D. 25
• E. 34
• F. 35

Answer: F

Explanation: The two elements 3 and 4 (starting from position with index 2) are copied into position index 1 and 2 in the same array.
Afterthe arraycopy command the array looks like:
{1, 3, 4, 4, 5};
Then element with index 1 is printed: 3 Then element with index 4 is printed: 5
Note:The System class has an arraycopy method that you can use to efficiently copy data from one array into another:
public static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length)
The two Object arguments specify the array to copyfromand the array to copyto. The three int arguments specify the starting position in the source array, the starting position in the destination array, and the number of array elements to copy.

NEW QUESTION 11
Given:

Which two declarations will compile?

• A. int a, b, c = 0;
• B. int a, b, c;
• C. int g, int h, int i = 0;
• D. int d, e, F;
• E. int k, l, m; = 0;

Answer: AD

NEW QUESTION 12
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: In segment 'if (valid)' valid must be of type boolean, but it is a string. This makes the compilation fail.

NEW QUESTION 13
Given the code fragment:

What is the result?

• A. 3 false 1
• B. 2 true 3
• C. 2 false 3
• D. 3 true 1
• E. 3 false 3
• F. 2 true 1
• G. 2 false 1

Answer: D

Explanation: The length of the element with index 0, {0, 1, 2}, is 3. Output: 3
The element with index 1, {3, 4, 5, 6}, is of type array. Output: true
The element with index 0, {0, 1, 2} has the element with index 1: 1. Output: 1

NEW QUESTION 14
Given the code fragment:
System.out.println(2 + 4 * 9 - 3); //Line 21
System.out.println((2 + 4) * 9 - 3); // Line 22
System.out.println(2 + (4 * 9) - 3); // Line 23
System.out.println(2 + 4 * (9 - 3)); // Line 24
System.out.println((2 + 4 * 9) - 3); // Line 25 Which line of codes prints the highest number?

• A. Line 21
• B. Line 22
• C. Line 23
• D. Line 24
• E. Line 25

Answer: B

Explanation: The following is printed: 35
51
35
26
35

NEW QUESTION 15
Given the code fragment:

What is the result?

• A. Values are : [EE, ME]
• B. Values are : [EE, EE, ME]
• C. Values are : [EE, ME, EE]
• D. Values are : [SE, EE, ME, EE]
• E. Values are : [EE, ME, SE, EE]

Answer: E

NEW QUESTION 16
Which is a valid abstract class?

• A. public abstract class Car { protected void accelerate();}
• B. public interface Car {protected abstract void accelerate();}
• C. public abstract class Car { protected final void accelerate();}
• D. public abstract class Car { protected abstract void accelerate();}
• E. public abstract class Car { protected abstract void accelerate() {//more car can do}}

Answer: D

NEW QUESTION 17
Given the code fragment:

What is the result?

• A. 10 8 6 4 2 0
• B. 10 8 6 4 2
• C. AnArithmeticException is thrown at runtime
• D. The program goes into an infinite loop outputting: 10 8 6 4 2 0. . .
• E. Compilation fails

Answer: B

NEW QUESTION 18
Given:
public class ComputeSum {
public int x; public int y; public int sum;
public ComputeSum (int nx, int ny) { x = nx; y =ny;
updateSum();
}
public void setX(int nx) { x =nx; updateSum();} public void setY(int ny) { x = ny; updateSum();} void updateSum() { sum = x + y;}
}
This class needs to protect an invariant on the sum field.
Which three members must have the private access modifier to ensure that this invariant is maintained?

• A. The x field
• B. The y field
• C. The sum field
• D. The ComputerSum ( ) constructor
• E. The setX ( ) method
• F. The setY ( ) method

Answer: CEF

Explanation: The sum field and the two methods (setX and SetY) that updates the sum field.