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2021 Mar 1Z0-803 actual test

Q21. Given: 

class X {} 

class Y { Y ( ) { } } 

class Z { Z (int i ) { } } 

Which class has a default constructor? 

A. X only 

B. Y only 

C. Z only 

D. X and Y 

E. Y and Z 

F. X and Z 

G. X, Y and Z 

Answer:


Q22. Given the following code fragment: 

What is the result if the integer value is 33? 

A. The fox jump lazy … 

B. The fox lazy … 

C. Quick fox over lazy … 

D. Quick fox the …. 

Answer:


Q23. Which two are Java Exception classes? 

A. SercurityException 

B. DuplicatePathException 

C. IllegalArgumentException 

D. TooManyArgumentsException 

Answer: AC 


Q24. Given: 

What is the result? 

A. 2 4 6 8 10 12 

B. 2 4 6 8 10 12 14 

C. Compilation fails 

D. The program prints multiple of 2 infinite times 

E. The program prints nothing 

Answer:


Q25. 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:


Leading 1Z0-803 question:

Q26. Given the code fragment:

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:


Q27. Given the class definitions: 

And the code fragment of the main() method, 

What is the result? 

A. Java 

Java 

Java 

B. Java 

Jeve 

va 

C. Java 

Jeve 

ve 

D. Compilation fails 

Answer:


Q28. Given: 

What is the result? 

A. There is no output 

B. d is output 

C. A StringIndexOutOfBoundsException is thrown at runtime 

D. An ArrayIndexOutOfBoundsException is thrown at runtime 

E. A NullPointException is thrown at runtime 

F. A StringArrayIndexOutOfBoundsException is thrown at runtime 

Answer:


Q29. Which three are bad practices? 

A. Checking for ArrayIndexoutofBoundsException when iterating through an array to determine when all elements have been visited 

B. Checking for Error and. If necessary, restarting the program to ensure that users are unaware problems 

C. Checking for FileNotFoundException to inform a user that a filename entered is not valid 

D. Checking for ArrayIndexoutofBoundsException and ensuring that the program can recover if one occur 

E. Checking for an IOException and ensuring that the program can recover if one occurs 

Answer: ABD 


Q30. Which statement initializes a stringBuilder to a capacity of 128? 

A. StringBuilder sb = new String ("128"); 

B. StringBuilder sb = StringBuilder.setCapacity (128); 

C. StringBuilder sb = StringBuilder.getInstance (128); 

D. StringBuilder sb = new StringBuilder (128); 

Answer: