Question

I have a string that I want to split with a certain delimiter

private int [] mMaxValues;

    public void setMaximum(String maximum) {
       mMaxValues = splitByDelimiter(maximum, ":");
    }

But the splitByDelimiter method return a string array into an int array

public String[] splitByDelimiter(String list,String delimiter) {
    String[] items = list.split("\\" + delimiter);

    for (String s : items) {
        s.trim();
    }

    return items;
}

What is the best way to fix this problem? I’m guessing that iterating the string array and casting them to integers isn’t the best solution.

I could also create a new splitByDelimiter that returns an int array but I’m guessing there is a better solution than that..

Is this a situation where you could use generics (I don’t have a lot of experience with generics)?

Thx 🙂

Answer 1

You need to convert string array to int array explicitly. Use:

public void setMaximum(String maximum) {
   Strin[] array = splitByDelimiter(maximum, ":");
   int i = 0;
   mMaxValues = new int[array.length];
   for (String value : array) {
       mMaxValues[i] = Integer.parseInt(value);
       i++;
   }
}

Also you need to handle few cases which may cause NullPointerException :

1. maximum is null
2. array is null
3. NumberFormatException may be raised while parsing Integer.parseInt(value), handle it.