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Java Programming Language Quiz - 2

Test your knowledge of Java programming fundamentals including expressions, operators, type conversions, and String handling

8 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which one of the following syntactic constructs is not a simple expression?



 
 
 
     
  1.  
    null
     
  2.  
    43
     
  3.  
    x 2
     
  4.  
    print()
     
    5.  
 
 
  
  
  
 
 Question 2 Multiple Choice (Single Answer) 
 
 
Which one of the following escape sequences cannot appear in a string literal?


 
 
 
     
  1.  
    \f
     
  2.  
    \u
     
  3.  
    "
     
  4.  
    \\
     
    5.  
 
 
  
  
  
 
 Question 3 Multiple Choice (Single Answer) 
 
 
Which one of the following is not a widening conversion rule?


 
 
 
     
  1.  
    Short integer to character
     
  2.  
    Integer to long integer
     
  3.  
    Floating-point to double precision floating-point
     
  4.  
    Character to floating-point
     
    5.  
 
 
  
  
 
 
 
 
 
 Question 4 Multiple Choice (Single Answer) 
 
 
The ?: operator is an example of which kind of operator?


 
 
 
     
  1.  
    Binary
     
  2.  
    Prefix
     
  3.  
    Postfix
     
  4.  
    Infix
     
    5.  
 
 
  
  
  
 
 Question 5 Multiple Choice (Single Answer) 
 
 
Which one of the following operators offers the fastest way to divide a negative integer by 2 and keep the negative result (e.g., -4/2 equals -2)?


 
 
 
     
  1.  
    /
     
  2.  
    %
     
  3.  
    >>
     
  4.  
    >>>
     
    5.  
 
 
  
  
  
 
 Question 6 Multiple Choice (Single Answer) 
 
 
You read the following statement in a Java program that compiles and executes.


submarine.dive(depth);


What can you say for sure?


 
 
 
     
  1.  
    depth must be an int
     
  2.  
    dive must be a method.
     
  3.  
    dive must be the name of an instance field.
     
  4.  
    submarine must be the name of a class
     
  5.  
    submarine must be a method.
     
    6.  
 
 
  
  
  
 
 Question 7 Multiple Choice (Single Answer) 
 
 
Given the following class definition, which of the following methods could be legally placed after the comment //Here public class Rid{ public void amethod(int i, String s){} //Here }


 
 
 
     
  1.  
    public void amethod(int s, String i){}
     
  2.  
    public void Amethod(int i, String s) {}
     
  3.  
    public void amethod(int i, String mystring){}
     
  4.  
    None of the above
     
  5.  
    public int amethod(int i, String s){}
     
    6.  
 
 
  
  
  
 
 Question 8 Multiple Choice (Single Answer) 
 
 
Which of the following statements are true?


 
 
 
     
  1.  
    Strings are a primitive type in Java and the StringBuffer is used as the matching wrapper type
     
  2.  
    The size of a string can be retrieved using the length property.
     
  3.  
    Strings are a primitive type in Java that overloads the + operator for concatenation
     
  4.  
    The String class is implemented as a char array, elements are addressed using the stringname[] convention
     
    5.  
 
 
  
  
 
 
 
   
 
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