Thread: Finding a String value in the ArrayList

Hello again,

How can I find a String value in the class Person, and add it to an already exisitng piece of coding?

For the assignment, I need to check if a last name is already in the ArrayList. If it is, the person cannot enter, if not the person can enter and then needs to follow the piece of coding in the second piece of code attached below.

Below is the code I could find in my textbook, but I get an IndexOutOfBoundsException error. What I'm a missing here, that it is not working?

Thanks for the help!

Code to find if there is already a last name in the arraylist

    public String searchLastName (Person name)
    {
        int index = 0;
 
        while (index < row1.size() || index < row2.size() && row1.get(index).getLastName() == name.getLastName() || row2.get(index).getLastName() == name.getLastName())
        {
            index++;
        }
 
        return index;
    }

Code to determine in which row the person needs to stand.

    public void enterBakkery(Person name)
    {
        if(name.hasVIPpass() == true)
        {        
            if(construction == true)
            {
                if(maxInRow1 < 15)
                {
                    maxInRow1++;
                    row1.add(name);
                }
                else
                {
                    row2.add(name);
                }
            }
            else
            {
                if(maxInRow1 < 10)
                {
                    maxInRow1++;
                    row1.add(name);
                }
                else
                {
                    row2.add(name);
                }
            }
        }
 
        else 
        {
            row2.add(name);
        }
    }

    public int searchRow1(Person name) {
        if(row1.size() > 0) {
            for (int i = 0; i < row1.size(); i++) {
                if (row1.get(i).getName().equals(name.getName())) {
                    return i;
                }
            }
        }
        return -1;
    }
    public int searchRow2(Person name) {
        if(row2.size() > 0) {
            for (int i = 0; i < row2.size(); i++) {
                if (row2.get(i).getName().equals(name.getName())) {
                    return i;
                }
            }
        }
        return -1;
    }
    public int searchLastName(Person name) {
        int index1 = searchRow1(name), index2 = searchRow2(name);
        return index2 > -1 ? index2 :  index1;
    }