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Q17. What is the result?
A. Hello
B. Default
C. Compilation fails
D. The program prints nothing
E. An exception is thrown at run time
Answer: A
Q18. Given:
What is the result?
A. 10 : 22 : 20
B. 10 : 22 : 22
C. 10 : 22 : 6
D. 10 : 30 : 6
Answer: B
Q19. Which two actions will improve the encapsulation of a class?
A. Changing the access modifier of a field from public to private
B. Removing the public modifier from a class declaration
C. Changing the return type of a method to void
D. Returning a copy of the contents of an array or ArrayList instead of a direct reference
Answer: AD
Q20. You are writing a method that is declared not to return a value. Which two are permitted in
the method body?
A. omission of the return statement
B. return null;
C. return void;
D. return;
Answer: AD
Q21. Given the code fragment:
int [][] array2d = new int[2][3];
System.out.println("Loading the data.");
for ( int x = 0; x < array2d.length; x++) {
for ( int y = 0; y < array2d[0].length; y++) {
System.out.println(" x = " + x);
System.out.println(" y = " + y);
// insert load statement here.
}
}
System.out.println("Modify the data. ");
for ( int x = 0; x < array2d.length; x++) {
for ( int y = 0; y < array2d[0].length; y++) {
System.out.println(" x = " + x);
System.out.println(" y = " + y);
// insert modify statement here.
}
}
Which pair of load and modify statement should be inserted in the code? The load
statement should set the array's x row and y column value to the sum of x and y
The modify statement should modify the array's x row and y column value by multiplying it by 2
A. Load statement: array2d(x,y) = x + y;
Modify statement: array2d(x,y) = array2d(x,y) * 2
B. Load statement: array2d[x y] = x + y;
Modify statement: array2d[x y] = array2d[x y] * 2
C. Load statement: array2d[x,y] = x + y;
Modify statement: array2d[x,y] = array2d[x,y] * 2
Oracle 1z0-803 : Practice Test
D. Load statement: array2d[x][y] = x + y;
Modify statement: array2d[x][y] = array2d[x][y] * 2
E. Load statement: array2d[[x][y]] = x + y;
Modify statement: array2d[[x][y]] = array2d[[x][y]] * 2
Answer: D
Q22. Which two are valid array declaration?
A. Object array[];
B. Boolean array[3];
C. int[] array;
D. Float[2] array;
Answer: AC
Q23. Given:
What is the result?
A. One
B. Two
C. Three
D. Compilation fails
Answer: D
Q24. Given:
Which two actions, used independently, will permit this class to compile?
A. Adding throws IOException to the main() method signature
B. Adding throws IOException to the doSoomething() method signature
C. Adding throws IOException to the main() method signature and to the dosomething() method
D. Adding throws IOException to the dosomething() method signature and changing the catch argument to IOException
E. Adding throws IOException to the main() method signature and changing the catch argument to IOException
Answer: CD
Q25. Given the fragment:
A. 14
B. 15
C. 24
D. 25
E. 34
F. 35
Answer: F
Q26. Given the following code:
What will make this code compile and run?
A. Change line 2 to the following:
Public int price
B. Change line 4 to the following:
int price = new simple ();
C. Change line 4 to the following:
Float price = new simple ();
D. Change line 5 to the following:
Price = 4f;
E. Change line 5 to the following:
price.price = 4;
F. Change line 5 to the following:
Price = (float) 4:
G. Change line 5 to the following:
Price = (Simple) 4;
H. The code compiles and runs properly; no changes are necessary
Answer: E
Q27. given:
A. ns = 50 S = 125
ns = 125 S = 125
ns = 100 S = 125
B. ns = 50 S = 125
ns = 125 S = 125
ns = 0 S = 125
C. ns = 50 S = 50
ns = 125 S = 125
ns = 100 S = 100
D. ns = 50 S = 50
ns = 125 S = 125
ns = 0 S = 125
Answer: B
Q28. Given:
public class SampleClass {
public static void main(String[] args) {
AnotherSampleClass asc = new AnotherSampleClass(); SampleClass sc = new
SampleClass();
sc = asc;
System.out.println("sc: " + sc.getClass());
System.out.println("asc: " + asc.getClass());
}}
class AnotherSampleClass extends SampleClass {
}
What is the result?
A. sc: class Object asc: class AnotherSampleClass
B. sc: class SampleClass asc: class AnotherSampleClass
C. sc: class AnotherSampleClass asc: class SampleClass
D. sc: class AnotherSampleClass asc: class AnotherSampleClass
Answer: D
Q29. Given:
What is the result?
A. Shining Sun
Shining Sun
Shining Sun
B. Shining Sun
Twinkling Star
Shining Sun
C. Compilation fails
D. A ClassCastException is thrown at runtime
Answer: D
Q30. Given:
Which two classes use the shape class correctly?
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
Answer: BE
Q31. Given a code fragment:
A. They match They real match
B. They really match
C. They match
D. Nothing is printed to the screen
Answer: B
Q32. Which code fragment cause a compilation error?
A. flat flt = 100F;
B. float flt = (float) 1_11.00;
C. float flt = 100;
D. double y1 = 203.22; floatflt = y1
E. int y2 = 100; floatflt = (float) y2;
Answer: B