Which of these correctly de¯nes a constructor in the class Student?
- PUBLIC STUDENT ()
- public STUDENT ()
- PUBLIC student()
- public void Student()
All Java keywords are lowercase so public must be lowercase. A constructor must have the same name as the class and all Java classes should start with an uppercase letter. Constructors do not have a return type so the only correct one is the last one.
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A FIFO page-replacement strategy can be implemented with relatively low overhead using a ________.
a) queue b) hash table c) binary tree d) stack
If array elements 0 through 4 of array a initially have the values 5, 3, 7 and 1, respectively, after executing the following code they will contain the values:
``` j = UBound( a) While j >= 1 For i = 0 To j - 1 If a( i ).Price > a( i + 1).Price Then Set o = a( i ) Set a( i ) = a( i + 1 ) Set a( i + 1 ) = o Set o = Nothing End If Next j = j – 1 Wend ``` (a) 5, 3, 7 and 1 (b) 7, 5, 3 and 1 (c) 1, 3, 5 and 7 (d) None of the above.
There is only one approach to joining tables.
Answer the following statement true (T) or false (F)
Which of the following is the FIRST thing a technician should do before putting their hand inside a computer case?
A. Acquire the appropriate tools that are going to be used. B. Touch the case to discharge static. C. Remove loose jewellery. D. Refer to manufacturer documentation.