Question

I have a string array that contains some information.

Example:

 String [] testStringArray;

 testStringArray[0]= Jim,35
                     Alex,45 
                     Mark,21

 testStringArray[1]= Ana,18
                    Megan,44

This is exactly how the information is. Now my problem is I want to make each element a seperate element in an array and I want to split it based on the \n character.

So I want

        newArray[0]=Jim,35
        newArray[1]=Alex,45
        newArray[2]=Mark,21
        newArray[3]=Ana,18

etc etc. I am aware of the split method but won’t this just split each array element into a completely new array instead of combining them?

If anyone could help, it would be appreciated. Thanks

Answer 1

Something like this:

    // Splits the given array of Strings on the given regex and returns
    // the result in a single array.
    public static String[] splitContent(String regex, String... input) {
        List<String> list = new ArrayList<>();
        for (String str : input) {
            for (String split : str.split(regex)) {
                list.add(split);
            }
        }
        return list.toArray(new String[list.size()]);
    }

you can call it this way:

    String[] testStringArray = ...;
    String[] newArray = splitContent("\n", testStringArray);

Because of the use of varargs you can also call it like this:

    String[] newArray = splitContent("\n", str1, str2, str3, str4);

where strX are String variables. You can use any amount you want. So either pass an array of Strings, or any amount of Strings you like.

If you don’t need the old array anymore, you can also use it like this:

    String[] yourArray = ...;
    yourArray = splitContent("\n", yourArray);