Question

String SomeLongString = JavaAPIMethodFor (String[] strings, String delimiter);

Or this could work as well:

String SomeLongString = JavaAPIMethodConvertingArrayWithDelimeter (String[] strings, char delimiter)

I wanted to join strings into a larger string, but this is simply useless. I am aware that I could append all the data into a string using Arrays.toString(Object someString) then adjust the string, removing unwanted characters. But that’s not really efficient, building something, only to rebuild it. So looping through the String[] and adding my character[s] between each element is probably the way to go:

import static org.junit.Assert.*;

import org.junit.Test;

public class DelimetedString {


    private String delimitedString(String [] test, String delimiter){
        StringBuilder result = new StringBuilder();
        int counter = 0;
        if(test.length > counter){
           result.append(test[counter++]);
           while(counter < test.length){
              result.append(delimiter);
              result.append(test[counter++]);
           }
        }
        return result.toString();
    }

    @Test
    public void test() {
        String [] test = new String[] 
{"cat","dog","mice","cars","trucks","cups","I don't know", "anything!"};
        String delimiter = " |...| ";
        assertEquals("DelimitedString misformed",
        "cat |...| dog |...| mice |...| cars |...| trucks "
            +"|...| cups |...| I don't know |...| anything!",
        delimitedString(test, delimiter));
    }

}

What I wanted was something to put together a string after using a tokenizer. I abandoned that Idea, since it’s probably more cumbersome then it’s worth. I chose to address a Sub-Strings from within the larger String, I included the code for that, in an “answer”.

What I was asking is – Does the java API have an equivalent function as the delimitedString function? The answer from several people seems to be no.

Answer 1

As far as I know, there isn’t a built in method. What you can do is taking the substring of it:

String str = Arrays.toString(arrayHere);
str = str.substring(1, str.lenght() - 1);