java programlamada yeniyim commentleri takip ederek yazdigim bu programda ciksta sorun yasiyorum
problemi cozmemde yardim ederseniz sevinirim
program CSV uzantili dosyadan verileri okuyup BMI hesaplayip BMI AGE WEIGHT degerlerinin ortalamalarini aliyor ver her ülke icin bu ortalamalari tekrar CSV dosyasina yaziyor.
benim problemim ortalamalari hesaplamada. okudugum verileri tekrar ortalama almak icin diger liste kopyalamada
tesekkürler.
Dosyadan okunan veri
| Kod: |
45;80;1.72;AUSTRIA
45;65;1.9;GERMANY
32;45.2;1.58;BELGIUM
55;50.5;1.72;AUSTRIA
65;85;1.98;BELGIUM
56;85;1.92;AUSTRIA
|
sonuc:
| Kod: |
Name=AUSTRIA AverageAge=0 AverageWeight=0.0 Averageheight=0.0 AverageBMI=0.0
Name=BELGIUM AverageAge=0 AverageWeight=0.0 Averageheight=0.0 AverageBMI=0.0
Name=GERMANY AverageAge=0 AverageWeight=0.0 Averageheight=0.0 AverageBMI=0.0
|
| Kod: |
public class Person {
public Person() {
super();
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getCountry() {
return country;
}
public void setCountry(String name) {
this.country = name;
}
public double getBmi() {
return weight / (Math.pow(height, 2));
}
public float getHeight() {
return height;
}
public void setHeight(float height) {
this.height = height;
}
public float getWeight() {
return weight;
}
public void setWeight(float weight) {
this.weight = weight;
}
private int age;
private String country;
private float height;
private float weight;
}
|
| Kod: |
public class Country implements Comparable<Country> {
// Define a private String object name to store the name
private String name;
// Define a private int variable age to store the age
private int age ;
// Define a private float variable weight to store the weight
private float weight;
// Define a private float variable height to store the height
private float height;
// Define a private double variable bmi to store the bmi
private double bmi;
// Define a private int variable count to count the persons
private int count;
// Implement setter and getter for name
public String getName() {
return name;
}
public void setName(String name) {
this.name=name;
}
// Implement a public getAverageAge function, which returns the float (float)age/count
public float getAverageAge() {
return age/count;
}
// Implement a private addAge function with parameter int age, which adds the parameter to the age variable
private void addAge(int age){
this.age += age;
}
// Implement a public getAverageWeight function, which returns the float weight/count
public float getAverageWeight(){
return weight/count;
}
// Implement a private addWeight function with parameter float weight, which adds the parameter to the weight variable
private void addWeight(float weight){
this.weight = weight;
}
// Implement a public getAverageHeight function, which returns the float height/count
public float getAverageHeight(){
return height/count;
}
// Implement a private addHeight function with parameter float height, which adds the parameter to the height variable
private void addHeight(float height){
this.height=height;
}
// Implement a public getAverageBMI function, which returns the double bmi/count
public double getAverageBMI(){
return bmi/count;
}
// Implement a private addBMI function with parameter double bmi, which adds the parameter to the bmi variable
private void addBMI(double bmi){
this.bmi=bmi;
}
// Implement a public getCount getter for the count variable
public int getCount(){
return count;
}
// Implement a private addCount function with parameter int count, which adds the parameter to the count variable
private void addCount(int count){
this.count=count+1;
}
// Implement a public addPerson function with parameter Person p, which calls the addAge, addHeight, add Weight, addBMI and addCount functions
public void addPerson(Person p){
addAge(age);
addHeight(height);
addWeight(weight);
addBMI(bmi);
addCount(count);
}
// Implement a public toString function, which returns a String formatted the following way: name;averageage;averageweight;averageheight;averagebmi
public String toString(){
return "Name=" + name + " " + "AverageAge=" + age + " " + "AverageWeight=" + weight + " " + "Averageheight=" + height + " " + "AverageBMI=" + bmi;
}
// This function allows sorting of countries according to the count variable
@Override
public int compareTo(Country arg0) {
return arg0.count - this.count;
}
}
|
| Kod: |
import java.io.*;
import java.util.*;
public class BMI_CSV {
public static void main(String[] args) {
try {
// Define and initialize an ArrayList persons to store Person objects
ArrayList<Person> persons = new ArrayList<Person>();
// Define and initialize an ArrayList country to store Country objects
ArrayList<Country> country = new ArrayList<Country>();
// Define a File object file and initialize it using the new File(args[0]) constructor
File file = new File(args[0]);
// Define a Scanner object inputStream and initialize it using the new Scanner(file) constructor
Scanner inputStream = new Scanner(file);
// Implement a while loop using inputStream.hasNextLine()
while(inputStream.hasNextLine())
{
// Define a String object line and initialize it using inputStream.nextLine()
String line = inputStream.nextLine();
// Define a String[] array fields and initialize it using line.split(";")
String[] fields = line.split(";");
// Create an empty Person object
Person person = new Person();
// Set the age of the person to Integer.valueOf(fields[0])
person.setAge(Integer.valueOf(fields[0]));
// Set the weight of the person to Float.valueOf(fields[1])
person.setWeight (Float.valueOf(fields[1]));
// Set the Height of the person to Float.valueOf(fields[2])
person.setHeight (Float.valueOf(fields[2]));
// Set the Country of the person to fields[3]
person.setCountry (fields[3]);
// Add the person object to the ArrayList persons
persons.add(person);
}
// Close the inputstream
inputStream.close();
// Implement a foreach loop using the persons ArrayList
for(Person Person : persons)
{
// Define a boolean variable added and initialize it with the value false
boolean added = false;
// Implement a foreach loop using the country ArrayList
for (Country Country : country)
{
// Implement an if condition with p.getCountry().equals(c.getName())
if(Person.getCountry().equals(Country.getName()))
{
// Add the person to the country Object
Country.addPerson(Person);
// Set added to true
added = true;
// Break
break;
}
}
// Implement an if condition using !added
if(!added)
{
// Create a new Country object
Country Country = new Country();
// Set the name of the country object to p.getCountry()
Country.setName (Person.getCountry());
// Call addPerson of the country object with the parameter person
Country.addPerson(Person);
// Add the country object to the ArrayList country
country.add(Country);
}
}
// Use Collections.sort to sort the country ArrayList
Collections.sort(country);
// Create a new PrintWriter object writer and initialize it using (args[1], "UTF-8")
PrintWriter writer = new PrintWriter(args[1], "UTF-8");
// Implement a foreach loop using the country ArrayList
for(Country Country: country)
{
// Use the println function of the writer using the country.toString function
writer.println(Country.toString());
// Print the same String to System.out
System.out.println(Country.toString());
}
// Close the writer
writer.close();
} catch (Exception e) {
System.out.println("Fehler bei der Verarbeitung.");
e.printStackTrace();
}
}
}
|
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