Discussion :: Assertions
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public class Test2
{
public static int x;
public static int foo(int y)
{
return y * 2;
}
public static void main(String [] args)
{
assert z > 0; /* Line 11 */
assert z > 2: foo(z); /* Line 12 */
if ( z 7 )
assert z > 4; /* Line 14 */
switch (z)
{
case 4: System.out.println("4 ");
case 5: System.out.println("5 ");
default: assert z 10;
}
if ( z 10 )
assert z > 4: z++; /* Line 22 */
System.out.println(z);
}
}
which line is an example of an inappropriate use of assertions?
Answer : Option D
Explanation :
Assert statements should not cause side effects. Line 22 changes the value of z if the assert statement is false.
Option A is fine; a second expression in an assert statement is not required.
Option B is fine because it is perfectly acceptable to call a method with the second expression of an assert statement.
Option C is fine because it is proper to call an assert statement conditionally.
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