Question

1) In Java, a library of classes is called

a) an application

b) a folder

c) a directory

d) a package

2) In the technique of Top-Down design, the problem of designing a method is divided into subproblems, which are then solved using the same technique.

a) true

b) false

3) It is possible to have two methods in the same class that have the same name, the same number and types of arguments, but different return types.

a) true

b) false

4) The == operator can be used to see if two strings have the same characters.

a) true

b) false

5) The Java compiler translates Java programs into machine language.

a) true

b) false

6) The characters // in a line

a) is an escape sequence

b) mean that the rest of the line is a comment

c) has no meaning

d) False are part of an expression that uses integer division

7) The following is an infinite loop:

j = 1;
while ( j < 10 )
   System.out.println( j++ );
   j = j - 1;

a) true

b) false

8) The following is an infinite loop:

j = 1;
while ( j < 10 )
   System.out.println( j );
   j++;

a) true

b) false

9) What happens if the catch-block of a more general exception comes before the catch-block of a more specific exception?

a) The more specific catch-block will never execute

b) Both catch-blocks will execute when the more specific exception occurs

c) Both catch-blocks will execute when the more general exception occurs

d) The more general catch-block will never execute

10) Consider the following code:

int[][] form = new int[2][5]; 
for ( int i=0; i<2; i++ )
{
   for ( int j=0; j<5; j++ ) 
   {     
      form[i][j] = i+4*j;
   }
}

Match the indices of the array to the answers provided

form[0][1]:

form[1][1]:

form[2][4]:

form[0][2]:

form[1][3]:

Options:

a) invalid

b) 13

c) 8

d) 5

e) 4

Answer 1

Answer:-----------

1. d) a package

2. a) true

3. a) true

4. b) false

5. b) false

6. b) mean that the rest of the line is a comment

7. b) false

8. a) true

9. c) Both catch-blocks will execute when the more general exception occurs

10. form[0][1]:------------ e) 4

    form[1][1]: ----------- d) 5

    form[2][4]: -----------  a) invalid

    form[0][2]: ------------ c) 8

    form[1][3]: ------------- b) 13