Question

• Create a class called evaluateValue that declares 3 integer class variables: zeroValue, positiveValue and negativeValue. These should be declared as public and you should not use automatic properties to declare them.
• Your class should have a constructor that takes one integer argument. In the constructor you will code if statements to set one of the three class variables (indicators) to 1 if the number sent to the constructor is either equal to zero, negative, or positive.
• In the class provide a method printit() used to print the results
  • Evaluate the positive, negative, and zero indicator to determine which line to print. If the indicator is set to 1 then the indicator is true.
  • You will print one of three statements;
    • The number was zero.
    • The number was positive.
    • The number was negative.
• In the default wrapper class named assignment3 and containing Main write the code in Main that declares one integer variable: val1.
• Use Console Write and Readline and the convert method to take the integer entry from the keyboard and pass it to the evaluateValue constructor.
• Instantiate an evaluateValue object and pass the integer values to the constructor.
• From Main call the printit method which will print the resulting evaluation in the class object.

Answer 1

import java.util.*;
import java.io.*;
class evaluateValue
{
public Integer zeroValue=null;
public Integer positiveValue=null;
public Integer negativeValue=null;

evaluateValue(int argument){
if(argument > 0){
positiveValue = 1;
}
else if(argument < 0){
negativeValue = 1;
}
else {
zeroValue = 1;
}
}

public void printit(){
  
if(zeroValue != null){
System.out.println(" The number was zero.");
}
if(positiveValue != null){
System.out.println(" The number was positive.");
}
if(negativeValue != null){
System.out.println(" The number was negative.");
}
}
}

public class assignment3
{
public static void main(String[] args)
throws IOException {
int val1;
// create a BufferedReader using System.in   
BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));
String str;   
System.out.println("Enter the number.");
str = obj.readLine();   
val1 = Integer.parseInt(str);
evaluateValue ob = new evaluateValue(val1);
ob.printit();
}

// below is the screenshot of the code to avoid indentation error if any.
}