Question

Question 3

1. A java source module contains the following class with the static methods main and procedure1, and the instance method procedure2 (assume given the bodies of procedure1 and procedure2):

public class TestQuestion3

            {

                        static int result, num1 = 10;

                        public static void Main( String [ ] args )

                        {

                                    int [ ] list1 =   { 2, 4, 6, 8, 10}, list2;

                                    .    .    .

                        }

                        static void procedure1( void )

                        {

                                    .   .   .

                        }

void procedure2( void )

                        {

                                    .   .   .

                        }

            }

1. Write the statement to call procedure1 in method main. (2 pts)
2. Write the statement to call procedure2 in method main. ( 2 pts)

1. The source module in section A also contains the following class Question3 with the static method procedure3. (15 pts)

class Question3

            {

                         static void procedure3(void )

                        {

                                    .    .    .

                        }

            }

1. Write the body of procedure3 which multiplies the values in variable num1 by 5 and stores the result into variable result (note that both variables are static variables defined in the class TestQuestion3).
2. Write the statement to call procedure3 in method main.
3. Add to class Question3 the instance method procedure4 that receives as parameter, a one-dimensional array of integer values and then builds and returns another one-dimensional array such that the value of each element is 5 times the corresponding element of the array received as parameter.
4. Write the statement that is used in method main to call method procedure4 with list1 as the argument and use list2 to receive to array returned by the method (list1 and list2 are defined in method main).

Question 4 (6 pts)

Write a program that is executed with a command line argument consisting of an integer value and a double precision value (example: java  <program-name>   50   10.25). This program multiplies the two values and prints the result.

Answer 1

Question 3:

Program code:

public class TestQuestion3

            {

                        static int result, num1 = 10;

                        public static void main(String [] args)

                        {

                                    int [ ] list1 =   { 2, 4, 6, 8, 10}, list2;
                                    procedure1();                        //Static method calling inside the class
                                    TestQuestion3 obj=new TestQuestion3();      //Creation of object of same class
                                    obj.procedure2();                      //Normal method calling inside the class
                                    Question3.procedure3();                     //Static method calling outside the class
                                    list2=Question3.procedure4(list1);       //Static method calling outside the class
                                    System.out.println("\nEntered list is...:");    //Printing arrays
                                    for(int i=0;i<list1.length;i++)
                                            System.out.print("\t"+list1[i]);  
                                    System.out.println("\nList returned from procedure 4 is..:");
                                    for(int i=0;i<list1.length;i++)
                                            System.out.print("\t"+list2[i]);                           
                           }

                        static void procedure1()                     //Body of procedure 1

                        {

                                    System.out.println("Procedure1 is called....");

                        }

                     void procedure2()                     //Body of procedure 2

                        {

                                      System.out.println("Procedure2 is called.....");

                        }
        }
class Question3

         {
                        static void procedure3()                     //Body of procedure 3

                        {

                                    System.out.println("Procedure3 is called....");

                        }

                        static int[] procedure4( int array[])                     //Body of procedure 4

                        {

                                    System.out.println("Procedure4 is called....");
                                    int array2[]=new int[array.length];
                                    for(int i=0;i<array.length;i++)
                                          array2[i]=array[i]*5;
                                    return array2;
                         }
                     

            }

Output:

Question 4:

Program code:

public class Question4
{
public static void main(String [] args)
{
int integerVal=Integer.parseInt(args[0]);
double doubleVal=Double.parseDouble(args[1]),res;
res=integerVal*doubleVal;
System.out.println(integerVal+" * "+doubleVal+" = "+res);
}
}

Output: