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Simple Function A simple function utilizing class String Download files: SimpleFunc.javaAreas: Introduction to classes and objects. 
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| 1 | /* | | 2 | *Program found on a midterm given out by Paul Gries during Summer 2000 | | 3 | */ | | 4 | | | 5 | public class SimpleFunc{ | | 6 | | | 7 | public boolean f(String s, String t, int k) { | | 8 | | | 9 | return (s.indexOf(t) != k) || (s.charAt(k) != 'w'); | | 10 | |
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 | Question 1 |  |
 | What class do indexOf() and
charAt() belong to? |
 | Question 2 | |
| If one were to make the method call
f(s, t, k)
with s="hello", t="he", and k=0, what would be the
order of operations executed for the line
(s.indexOf(t) != k) || (s.charAt(k) !='w')? |
| Question 3 | |
| What possible values are returned by this function? |
| Question 4 | |
| If s.indexOf(t) != k,
but t is not a substring of s, what can one say
about k? |
| Question 5 | |
| If one were to execute charAt(index)
with index equal to -10, a string index out of bounds
exception
(i.e. java.lang.StringIndexOutOfBoundsException)
would be thrown. However, the method f
still works properly if parameter k is passed the value
-10. Why is this so? |
| Question 6 | |
| If the parameter k is passed the value -1, does the
method f work? If yes, then under what
conditions? |
| Question 7 | |
| What would be a good precondition for f()? |
| Question 8 | |
| What kind of exception is thrown if the first two
conditions of the precondition
in question 7 are not fulfilled? |
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