Question

• In Lab 4, you made a class with static methods.
• The static methods converted an integer in binary, Hex, and Octal.
• To do this, you made a class of static methods.
• The class did not have any fields. The static methods received the integer value as a parameter.

• For this lab, make all of the static methods, non-static methods.

Lab 5 Requirements

1. Create a class named “Lab5_IntConv_Class
2. Have one private field name intValue.
3. Add two constructors:
   1. One is a default contructor.
   2. The other constructor accepts an integer.
4. Make the 4 methods non-static.
5. Add 2 more methods called setInteger() and getInteger().
6. When one of the 4 methods are called they are to use the field intValue as the value to convert.
7. These four methods will still return the answer, to the caller.
8. Use the two supplied java files from the last assignment. Or the two java files your created from the ones given.

Submit the main() java file and the java file that has the class.

Static method code so far from Lab 4

1 import java.util.*;
2 import java.util.Scanner;
3 class Lab4_IntConv
4 {
5
6 public static String Conv_SignedInt2Binary (int intValue) // convert signed integer to binary
7 {
8
9 return Integer.toBinaryString(intValue);
10 }
11
12
13 public static String Conv_UnsignedInt2Binary (int intValue) // convert unsigned integer to binary
14 {
15 String test = "";
16 intValue=Math.abs(intValue);
17 while (intValue > 0)
18 {
19 test = ( (intValue & 1 ) == 0 ? '0' : '1') +test;
20 intValue = intValue>>1;
21 }
22 return test;
23 }
24
25 public static String Conv_unsignedInt2Hex(int intValue) // convert unsigned integer to Hexadecimal
26 {
27 intValue=Math.abs(intValue);// convert signed integer to unsigned integer
28 return Integer.toHexString(intValue);
29 }
30
31
32 public static String Conv_UnsignedInt2Octal(int intValue) // convert signed integer to Octal
33 {
34 intValue=Math.abs(intValue); // convert signed integer to unsigned integer
35 return Integer.toOctalString(intValue);
36 }
37
38 }

Main method so far from lab 4

1 import java.util.*;
2 import java.util.Scanner;
3
4 public class Lab4_IntConv_Main
5 {
6
7
8 public static void main (String[] args)
9 {
10
11 int i, item = 0;
12 int intValue;
13
14 Scanner kb = new Scanner(System.in); //Scanner method is used to connect keyboard
15 final int EXIT_OPTION = 5;
16 do
17 {
18
19 System.out.println( "1. Convert Integer (signed) to Binary.\n2. Convert Integer (unsigned) to Binary \n3. Convert Integer (unsigned) to Hexadecimal.\n4. Convert Integer (unsigned) to Octal.\n5. Exit Program.\n");
20 item = kb.nextInt();//get option from user
21
22
23 if ((item < 1) || (item > EXIT_OPTION))
24 System.out.println("Selection"+item+" is not a vald option.\n\n");
25
26 else
27 {
28
29 switch (item)
30 {
31 case 1: System.out.println("Enter the integer value, to convert: ");
32 intValue = kb.nextInt();
33 System.out.println("Binary Value="+Lab4_IntConv.Conv_SignedInt2Binary(intValue)); //call the method signed integer to binary
34 break;
35 case 2: System.out.println("Enter the integer value, to convert: ");
36 intValue = kb.nextInt();
37 System.out.println("Binary Value="+Lab4_IntConv.Conv_UnsignedInt2Binary(intValue)); //call the method unsigned integer to binary
38 break;
39 case 3: System.out.println("Enter the integer value, to convert: ");
40 intValue = kb.nextInt();
41 System.out.println("Hexa Value="+Lab4_IntConv.Conv_unsignedInt2Hex(intValue)); //call the method unsigned integer to Hexadecimal
42 break;
43 case 4: System.out.println("Enter the integer value, to convert: ");
44 intValue = kb.nextInt();
45 System.out.println("Octal Value="+Lab4_IntConv.Conv_UnsignedInt2Octal(intValue)); //call the method unsigned integer to Octal
46 break;
47 case 5: System.out.println ("\n\t----- Goodbye -----\n");
48 System.exit(0); //exit from the program
49 }
50 }
51 }while (item != EXIT_OPTION); // do-while
52 }
53 }

If anyone could help me with these codes with the instructions given above that would be great!

Answer 1

All the explanations is given in the comments of the code itself.

Code--
import java.util.Scanner;
class Lab5_IntConv_Class
{
   private int intValue;
   //default constructor
   public Lab5_IntConv_Class()
   {
       this.intValue=0;
   }
   // convert signed integer to binary  
   public String Conv_SignedInt2Binary()
   {
       return Integer.toBinaryString(this.intValue);
   }
   // convert unsigned integer to binary
   public String Conv_UnsignedInt2Binary()
   {
      
       String test = "";
       int temp=Math.abs(this.intValue);
       while (temp > 0)
       {
           test = ( (temp & 1 ) == 0 ? '0' : '1') +test;
           temp = temp>>1;
       }
       return test;
   }
   // convert unsigned integer to Hexadecimal
   public String Conv_unsignedInt2Hex()
   {
       // convert signed integer to unsigned integer
       int temp=Math.abs(this.intValue);
       return Integer.toHexString(temp);
   }

   // convert signed integer to Octal
   public String Conv_UnsignedInt2Octal()
   {
       // convert signed integer to unsigned integer
       int temp=Math.abs(this.intValue);
       return Integer.toOctalString(temp);
   }
   //constructor that accepts integer
   public Lab5_IntConv_Class(int intValue)
   {
       this.intValue = intValue;
   }
   //getters and setters
   public int getIntValue()
   {
       return intValue;
   }
   public void setIntValue(int intValue)
   {
       this.intValue = intValue;
   }
}
//Main method so far from lab 4
public class Lab5_IntConv_Main
{
   public static void main (String[] args)
   {  
       int i, item = 0;
       int intValue;
       Lab5_IntConv_Class t;
      
       Scanner kb = new Scanner(System.in); //Scanner method is used to connect keyboard
       final int EXIT_OPTION = 5;
       do
       {
           System.out.println( "1. Convert Integer (signed) to Binary.\n2. Convert Integer (unsigned) to Binary \n3. Convert Integer (unsigned) to Hexadecimal.\n4. Convert Integer (unsigned) to Octal.\n5. Exit Program.\n");
           item = kb.nextInt();//get option from user
  
  
           if ((item < 1) || (item > EXIT_OPTION))
               System.out.println("Selection"+item+" is not a vald option.\n\n");
  
           else
           {
  
               switch (item)
               {
                   case 1:
                       System.out.println("Enter the integer value, to convert: ");
                       t=new Lab5_IntConv_Class(kb.nextInt());
                       System.out.println("Binary Value="+t.Conv_SignedInt2Binary()); //call the method signed integer to binary
                       break;
                   case 2:
                       System.out.println("Enter the integer value, to convert: ");
                       t=new Lab5_IntConv_Class(kb.nextInt());
                       System.out.println("Binary Value="+t.Conv_UnsignedInt2Binary()); //call the method unsigned integer to binary
                       break;
                   case 3:
                       System.out.println("Enter the integer value, to convert: ");
                       t=new Lab5_IntConv_Class(kb.nextInt());
                       System.out.println("Hexa Value="+t.Conv_unsignedInt2Hex()); //call the method unsigned integer to Hexadecimal
                       break;
                   case 4:
                       System.out.println("Enter the integer value, to convert: ");
                       t=new Lab5_IntConv_Class(kb.nextInt());
                       System.out.println("Octal Value="+t.Conv_UnsignedInt2Octal()); //call the method unsigned integer to Octal
                       break;
                   case 5:
                       System.out.println ("\n\t----- Goodbye -----\n");
                       System.exit(0); //exit from the program
               }
           }
       }while (item != EXIT_OPTION); // do-while
   }
}

Code Screenshot--

Note--

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