[blackeagle]

@darthjames226 well yes but maybe it was a bigger value i always use double instead of float int instead of byte ... is that wrong ?

---

now i moved to start with the next part
i need to make this class
Class Articles: general class of all items
Properties: number (automatically generated during the creation of an article), purchase price, sale price and name.
Methods (other than the manufacturer):
calculating the rate of return ((prixVente - purchasePrice) / purchasePrice)
toString (): return the name and price of the item
This class does not implement any interface.

i did this

Code:

public class Articles { private int nbr; private int purchasePrice; private int salePrice; private String name; public Articles(int nbr,int purchasePrice,int salePrice,String name){ this.nbr=nbr; this.purchasePrice=purchasePrice; this.salePrice=salePrice; this.name=name; } public int getNbr(){ return nbr; } public void setNbr(int nbr){ this.nbr=nbr; } public int getPurchasePrice(){ return purchasePrice; } public void setPurchasePrice(int purchasePrice){ this.purchasePrice=purchasePrice; } public int getSalePrice(){ return salePrice; } public void setSalePrice(int salePrice){ this.salePrice=salePrice; } public String getName(){ return name; } public void setName(String name){ this.name=name; } public double calculateRateOfReturn(){ double tauxRendement=((salePrice-purchasePrice)/purchasePrice); return tauxRendement; } }

i didnt understand what he mean with this

Code:

toString (): return the name and price of the item

and why do i need to make this isnt this the same as the get methods i made ?

[blackeagle]

@darthjames226 well yes but maybe it was a bigger value i always use double instead of float int instead of byte ... is that wrong ?

---

now i moved to start with the next part
i need to make this class
Class Articles: general class of all items
Properties: number (automatically generated during the creation of an article), purchase price, sale price and name.
Methods (other than the manufacturer):
calculating the rate of return ((prixVente - purchasePrice) / purchasePrice)
toString (): return the name and price of the item
This class does not implement any interface.

i did this

Code:

public class Articles { private int nbr; private int purchasePrice; private int salePrice; private String name; public Articles(int nbr,int purchasePrice,int salePrice,String name){ this.nbr=nbr; this.purchasePrice=purchasePrice; this.salePrice=salePrice; this.name=name; } public int getNbr(){ return nbr; } public void setNbr(int nbr){ this.nbr=nbr; } public int getPurchasePrice(){ return purchasePrice; } public void setPurchasePrice(int purchasePrice){ this.purchasePrice=purchasePrice; } public int getSalePrice(){ return salePrice; } public void setSalePrice(int salePrice){ this.salePrice=salePrice; } public String getName(){ return name; } public void setName(String name){ this.name=name; } public double calculateRateOfReturn(){ double tauxRendement=((salePrice-purchasePrice)/purchasePrice); return tauxRendement; } }

i didnt understand what he mean with this

Code:

toString (): return the name and price of the item

and why do i need to make this isnt this the same as the get methods i made ?

[darthjames226]

The toString() returns a string equivalent. For example:

int value = 30;
System.out.println(value.toString());

This code snippet would print out 30. Notice that value will be displayed as a String and not as an integer.

---

Maybe this will explain more to you:

Parameters:
Here is the detail of parameters:

i -- An int for which string representation would be returned.

Return Value:
toString(): This returns a String object representing the value of this Integer.

toString(int i): This returns a String object representing the specified integer.

Example:
public class Test{

public static void main(String args[]){
Integer x = 5;

System.out.println(x.toString());
System.out.println(Integer.toString(12));
}
}
This produces the following result:

5
12

[darthjames226]

The toString() returns a string equivalent. For example:

int value = 30;
System.out.println(value.toString());

This code snippet would print out 30. Notice that value will be displayed as a String and not as an integer.

---

Maybe this will explain more to you:

Parameters:
Here is the detail of parameters:

i -- An int for which string representation would be returned.

Return Value:
toString(): This returns a String object representing the value of this Integer.

toString(int i): This returns a String object representing the specified integer.

Example:
public class Test{

public static void main(String args[]){
Integer x = 5;

System.out.println(x.toString());
System.out.println(Integer.toString(12));
}
}
This produces the following result:

5
12

[blackeagle]

@darthjames226 yeah i know that toString but didnt understand the question anw i'll work on it and show you to make sure it's correct

---

well sry to bother you again but things didn't work well so i have to make a method called toString that return string values for name and for prices ?
but is toString() a method that already exist ?
i'm kind of lost here

[blackeagle]

@darthjames226 yeah i know that toString but didnt understand the question anw i'll work on it and show you to make sure it's correct

---

well sry to bother you again but things didn't work well so i have to make a method called toString that return string values for name and for prices ?
but is toString() a method that already exist ?
i'm kind of lost here

[darthjames226]

Not a problem at all. Yes that method already exists. Every object inherits the toString().

---

From the Object.toString() docs:

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

[darthjames226]

Not a problem at all. Yes that method already exists. Every object inherits the toString().

---

From the Object.toString() docs:

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

[blackeagle]

ok so if i do this public String toString(){
}
netbeans give me an error this error is fixed by adding @Override before it i have no idea what it does !!
now inside the toString() i need to write
retun name;(name is already a String)
now i tried String purchasePrice=purchasePrice.toString();
i get an error int cannot be dereferenced i have no idea what's wrong here

[blackeagle]

ok so if i do this public String toString(){
}
netbeans give me an error this error is fixed by adding @Override before it i have no idea what it does !!
now inside the toString() i need to write
retun name;(name is already a String)
now i tried String purchasePrice=purchasePrice.toString();
i get an error int cannot be dereferenced i have no idea what's wrong here