Determine the results of executing the following Java statements

LAB

WEEK 7

JAVA PROGRAMMING

Using the Selection Control Structure if

Determine the results of executing the following Java statements.  To do so, step through the statements, and then write what should be displayed.

Use the following two assignment statements for the exercises of this lab.

                     int  x = 6;

                     Boolean found = false;

1.      if  (x> 10)

System.out.println(“x  is  greater  than  10.\n”);

      System.out.println(“Selection  allows  decision  making.\n”);

Answer:

Selection  allows  decision  making.

2.      if  (x = =  6)

System.out.println(“ A match is found.\n”);

      System.out.println(“ System.out.println(“Sequence continues after selection is complete.\n

Answer:

Syntax Error.

3.      if (x <  8)

{

System.out.println (“x  is within  the  range.\n”);

System.out.println(“This is a true statement.\n”);

}

System.out.println(“And, after selection, the next statement is executed.\n”);

Answer:

x  is within  the  range.

This is a true statement.

And, after selection, the next statement is executed.

4.      if (x = =  6  | |  found)

System.out.println(”Problem  4  is true.\n”);

System.out.println(“End of Problem 4\n”);

Answer:

Problem  4  is true.

End of Problem 4

5.      if  (x = = 6 _&& found)

System.out.println(“Problem  5  is true.\n”);

      System.out.println(“ End of Problem  5\n”);

Answer:

End of Problem  5

6.      if  (x  ! = 6_&&!found)

System.out.println(“Problem 6 is true,\n”);

      System.out.println(“End of Problem 6\n”);

Answer:

End of Problem 6

7.      if  (x  >  0  _&&x<  10);

System.out.println(“x  is  in  range\n”);

      System.out.println(“The value of x is “ + x + “.\n”);

Answer:

x  is  in  range

The value of x is 6.

8.      if (x >  10)

System.out.println ( “ x is greater than 10.\n”);

     else

           System.out.println(“x is less than or equal to 10.\n”);

 System.out.println(“ Selection allows decision making.\n”);

Answer:

x is less than or equal to 10.

 Selection allows decision making.

9.      if ( x = =  6)

System.out.println( “A match is found.\n”);

     else

System,out.println(“ A match was not found.\n”);

     System.out.println(“Sequence continues after selection is complete.\n”);

Answer:

A match is found.

Sequence continues after selection is complete.

10.  if (!(x <  8) )

{

System.out.println(x is within the range.\n”);

System.out.println(“This is a true statement.\n”);

     }

     else

{

           System.out.println(“x is out of range.\n”);

           System.out.println(“This is a false statement.\n”);

     }

     System.out.println(“After selection, the next statement is executed.\n”);

Answer:

x is out of range.

This is a false statement.

After selection, the next statement is executed.

11.  if (x > =  5)

{

}

else

     System.out.println(“Have a good day.\n);

System.out.println(“The value of x is “ + x + ‘\n’);

Answer:

The value of x is 6

12.  if (x = =  6 _&&  found)

    System.out.println(“Problem 5 is true.\n);

      else

     {

          System.out.println(“Problem 5 is false.\n”);

          System.out.println(“Both condition must be true.\”);

     }

     System.out.println(“End of Problem 5\n”);

Answer:

Problem 5 is false.

Both condition must be true.

End of Problem 5

13.  if ( x ! = 6 _&&  ! found)

System.out.println(“Problem 6 is true.\n”);

    else

          System.out.println(“Problem 6 is false.\n”);

     System.out.println(“End of Problem 6\n”);

Answer:

Problem 6 is false.

End of Problem 6

14.  if (x > 0 _&& x < 10)

System.out.println(“ x is in range\n”);

     else

          System.out.println(“ x is not in range\n”);

Answer:

x is in range