Question

CREATE A CONSOLE APPLICATION USING ECLIPSE.
import java.util.ArrayList;
import java.util.Random;

/* Computer Science and Information Systems
 * Programming and Problem Solving II
 * Code Practice and Review
 * Stockton University
 * 
 * The following exercise will walk you through a lot of the
 * topics covered in the first installment of the series.
 * 
 * This specific exercise uses climate data.
 * 
 * Topics include:
 * 
                CLASSES AND METHODS
                ARRAY/ARRAYLIST
                CONDITIONAL LOGIC (IF/ELSE-IF/SWITCH)
                ITERATION (FOR/DO/WHILE)
                STRING MANIPULATION (SUBSTR/LENGTH/CHARAT)
                FUNDAMENTAL TOOLS (RANDOM/SCANNER)
                FORMATTED OUTPUT (PRINTF/STDOUT/STDERR)
 *                      
 */

public class Student {

        // The insertion point for this application
        public static void main(String[] args) {        

                // Create some arrays to store possible conditions
                double[] aryWaveHeight = new double[5];
                double[] aryTemperature = new double[5];
                String[] aryWeather = new String[5];

                // ------------------------------------------------------------------------
                // CREATE YOUR ARRAYLIST HERE
                

                
                // Populate the arrays with data
                aryWaveHeight[0] = 36;
                aryWaveHeight[1] = 14;
                aryWaveHeight[2] = 25;
                aryWaveHeight[3] = 48;
                aryWaveHeight[4] = 9;
                
                aryTemperature[0] = 92;
                aryTemperature[1] = 87;
                aryTemperature[2] = 65;
                aryTemperature[3] = 72;
                aryTemperature[4] = 83;
                
                aryWeather[0] = "Heavy rain and cloud cover.";
                aryWeather[1] = "Partly cloudy, chance of rain later.";
                aryWeather[2] = "Warm and dry. Clear skies all day.";
                aryWeather[3] = "Scattered T-Storms and showers.";
                aryWeather[4] = "Sunny and hazy. Light clouds in the mid-afternoon.";
                
                
                // ---------------------------------------
                // CREATE A RANDOM NUMBER GENERATOR OBJECT
                                

                
                
                // -------------------------------------------------------------------------------------
                // PUT A LOOPING CONSTRUCT HERE: FILL YOUR ARRAYLIST WITH 1000 RANDOM WEATHER CONDITIONS
                

                
                        // CREATE A TEMPORARY RANDOM WEATHER CONDITION
                        WeatherInstance randomCondition = new WeatherInstance();
                        randomCondition.temperature = aryTemperature[generator.nextInt(5)];
                        randomCondition.waveHeight = aryWaveHeight[generator.nextInt(5)];
                        randomCondition.weather = aryWeather[generator.nextInt(5)];

                        // OUTPUT THE RANDOMLY GENERATED CONDITION'S PARAMETERS
                        System.out.println("Temp: " + randomCondition.temperature);
                        System.out.println("Wave: " + randomCondition.waveHeight);
                        System.out.println(randomCondition.weather);

                        // POPULATE THE ARRAYLIST
                        weatherConditions.add(randomCondition);
                        


                        
                
                // --------------------------------------------------------------------------------------
                // PUT A LOOPING CONSTRUCT HERE: COUNT HOW MANY TIMES A TEMPERATURE ABOVE 75 WAS OBSERVED

                
                int tempsAbove75 = 0;

                        if (weatherConditions.get(i).getTemperature() > 75) tempsAbove75++;


                System.out.println(tempsAbove75 + " specific occurences out of 1000, or approx. " + (tempsAbove75/10.0) + "% of observations were above 75 degrees");
                
                
                // -----------------------------------------------------------------------------------------
                // PUT A NESTED CONTROL STRUCTURE HERE: COUNT HOW MANY TIMES  
                // SCATTERED T-STORMS OCCURED AT THE SAME TIME THAT WAVE HEIGHT WAS BELOW 30
                
                
                int tStormsWaveHeightBelow30 = 0;
                for (int i=0; i<1000; i++) {



                                        
                }
                System.out.println(tStormsWaveHeightBelow30 + " specific occurences out of 1000, or approx. " + (tStormsWaveHeightBelow30/10.0) + "% of observations were during scattered T-Storms with waves below 30");
                

        }

}

Answer 1

Program:

Code:

Note: Changes and new additions made to the code are in bold text.

import java.util.ArrayList;
import java.util.Random;

/* Computer Science and Information Systems
* Programming and Problem Solving II
* Code Practice and Review
* Stockton University
*
* The following exercise will walk you through a lot of the
* topics covered in the first installment of the series.
*
* This specific exercise uses climate data.
*
* Topics include:
*
       CLASSES AND METHODS
       ARRAY/ARRAYLIST
       CONDITIONAL LOGIC (IF/ELSE-IF/SWITCH)
       ITERATION (FOR/DO/WHILE)
       STRING MANIPULATION (SUBSTR/LENGTH/CHARAT)
       FUNDAMENTAL TOOLS (RANDOM/SCANNER)
       FORMATTED OUTPUT (PRINTF/STDOUT/STDERR)
*                    
*/
//class weather instance
class WeatherInstance{
   //variable to store temperature
   double temperature;
  
   //variable to store waveHeight
   double waveHeight;
  
   //variable to store weather
   String weather;
  
   //getters for the above variables
   double getTemperature(){
       return this.temperature;
   }
  
   double getWaveHeight(){
       return this.waveHeight;
   }
  
   String getWeather(){
       return this.weather;
   }
}

public class Student {

   // The insertion point for this application
   public static void main(String[] args) {      

       // Create some arrays to store possible conditions
       double[] aryWaveHeight = new double[5];
       double[] aryTemperature = new double[5];
       String[] aryWeather = new String[5];

       // ------------------------------------------------------------------------
       // CREATE YOUR ARRAYLIST HERE
      
       //creating array list
       //ArrayList is created as below
       //ArrayList is created by specifying the type of objects it contains
       ArrayList<WeatherInstance> weatherConditions = new ArrayList<WeatherInstance>();
      
       // Populate the arrays with data
       aryWaveHeight[0] = 36;
       aryWaveHeight[1] = 14;
       aryWaveHeight[2] = 25;
       aryWaveHeight[3] = 48;
       aryWaveHeight[4] = 9;
      
       aryTemperature[0] = 92;
       aryTemperature[1] = 87;
       aryTemperature[2] = 65;
       aryTemperature[3] = 72;
       aryTemperature[4] = 83;
      
       aryWeather[0] = "Heavy rain and cloud cover.";
       aryWeather[1] = "Partly cloudy, chance of rain later.";
       aryWeather[2] = "Warm and dry. Clear skies all day.";
       aryWeather[3] = "Scattered T-Storms and showers.";
       aryWeather[4] = "Sunny and hazy. Light clouds in the mid-afternoon.";
      
      
       // ---------------------------------------
       // CREATE A RANDOM NUMBER GENERATOR OBJECT
      
       //Random generator object is created by calling its constructor
       Random generator = new Random();          

       // -------------------------------------------------------------------------------------
       // PUT A LOOPING CONSTRUCT HERE: FILL YOUR ARRAYLIST WITH 1000 RANDOM WEATHER CONDITIONS
      
       //for loop is created by specifying initialization,condition,updation statements
       //seperated by semicolons(;)
       for(int i=0;i<1000;i++){
  
           // CREATE A TEMPORARY RANDOM WEATHER CONDITION
           WeatherInstance randomCondition = new WeatherInstance();
           randomCondition.temperature = aryTemperature[generator.nextInt(5)];
           randomCondition.waveHeight = aryWaveHeight[generator.nextInt(5)];
           randomCondition.weather = aryWeather[generator.nextInt(5)];

           // OUTPUT THE RANDOMLY GENERATED CONDITION'S PARAMETERS
           System.out.println("Temp: " + randomCondition.temperature);
           System.out.println("Wave: " + randomCondition.waveHeight);
           System.out.println(randomCondition.weather);

           // POPULATE THE ARRAYLIST
           weatherConditions.add(randomCondition);
          
       }  
              
      
       // --------------------------------------------------------------------------------------
       // PUT A LOOPING CONSTRUCT HERE: COUNT HOW MANY TIMES A TEMPERATURE ABOVE 75 WAS OBSERVED

       int tempsAbove75 = 0;
       //size() is a method of ArrayList class which returns count of elements present in it
       for(int i=0;i<weatherConditions.size();i++){
          
           if (weatherConditions.get(i).getTemperature() > 75) tempsAbove75++;

       }
       System.out.println(tempsAbove75 + " specific occurences out of 1000, or approx. " + (tempsAbove75/10.0) + "% of observations were above 75 degrees");
      
      
       // -----------------------------------------------------------------------------------------
       // PUT A NESTED CONTROL STRUCTURE HERE: COUNT HOW MANY TIMES
       // SCATTERED T-STORMS OCCURED AT THE SAME TIME THAT WAVE HEIGHT WAS BELOW 30
      
      
       int tStormsWaveHeightBelow30 = 0;
       for (int i=0; i<1000; i++) {

           //if condition to check weather as SCATTERED T-STORMS OCCURED
           //equals() method checks for equality of two strings(It is a method in class String)
           if(weatherConditions.get(i).getWeather().equals("Scattered T-Storms and showers."))
               //if condition to check whether wave height is less than 30
               if(weatherConditions.get(i).getWaveHeight()<30)
                   tStormsWaveHeightBelow30++;
       }
       System.out.println(tStormsWaveHeightBelow30 + " specific occurences out of 1000, or approx. " + (tStormsWaveHeightBelow30/10.0) + "% of observations were during scattered T-Storms with waves below 30");
   }
}

Output: