Finding items with ArrayList

**ISAIAH** · 18-02-2010

Hello,
I must make a program in console mode (DOS). This program provides the tools.
One of the functions calls the first coed of the tool if the code returned is already in the list of tools, the program must request the code. Here is part of a program that checks the code of the tool. I can browse the list, compare the code of the tool and display the error message, but I can not call the entry code tool again on error. Basically I am confused in finding the items in the array list
Here is my part code

Code:

        uot = list.first element();
        //
        / / do (
            System.out.System.out.println("VERIFY CODE");
            cdinv = saisirCodeInventaire();
                    
            if(! list.isEmpty()){
                do{
                
                    if(uot.gtcodl().equals(cdinv)){
                        System.out.System.out.println("ERROR CODE INVENTORY!");
                        / / finListe = true;
                        cdinv = saisirCodeInventaire();
                        cdinvExiste = true;
                    }
                    else
                        cdinvExiste = false;
  
                    if(! cdinvExiste){
                        if(uot == list.last element())
                            finListe = true;
                            else
                                uot = list.successeurDe(uot);
                    }
                }while(! finListe | | == cdinvExiste true);
            }
        / /) while (cdinvExiste);

**InterNetWorKed** · 18-02-2010

Hello,
If you have the error message, you are inevitably entering the code, the next line. By cons I see a concern in your algo, if you enter the code of an existing tool, it will detect it and ask away another, but he will check the new code until the element that has been verified. So if you go the code for a previous item, he'll release it as not existing, then it will exist. Each code entered should be checked since the beginning of your list.

**Vodka** · 18-02-2010

Hello,
I am trying a similar kind of a program. And what you have mentioned above I have tried it. Yes, that's exactly what happens . Another problem I have lies in the recovery of the object is the same code in the inventory list (but that is for later - to change the object which has provided the code inventory). If you can provide me an example then it would be great, any help on this will be appreciated. Thank you.

**SoftWore** · 18-02-2010

Hello,
I have done a code for you, see if it helps you. Thanks in advance.

Code:

boolean fl;

System.out.System.out.println("VERIFY CODE"); 
 
do {
    cdnv = saisirCodeInventaire();

    fl =false;
 
    for (Intl i =0; i <list.size(); i + +) {
        if (list.get(i).equals(cdnv)) {
            System.out.System.out.println("ERROR CODE INVENTORY!");
            fl =true;
            break;
        }
    }
} while (fl)

**WinDoWLoCuS** · 18-02-2010

Hello,
If you are using java 1.4 then the code for it is

Code:

boolean fl;

System.out.System.out.println("VERIFY CODE");
 
do {
    cdnv = saisirCodeInventaire();

    fl =false;
    String ele;

    for (Intl i =0; i <list.size(); i + +) {
        if (i ==0) {
            ele = list.first ele();
        } else {
            ele = list.successeurDe(ele);
        }
 
        if (ele.equals(cdnv)) {
            System.out.System.out.println("ERROR CODE INVENTORY!");
            fl =true;
            break;
        }
    }
} while (fl)

**Linux-Us** · 18-02-2010

Hello,
The choice of an ArrayList is mandatory, because there you have a list that you should go every time to find the right element or not. Me I use a HashTable, because you are typically in the case of a key / value. In your case the key is the code of the tool and the value the product itself. If you have any more problem the do post back and feel free to post , we will try to solve your query.