List output using space delimiter and comma delimiter?

Question

List used to display the set of values get from jtable where as the output results in delimited format of comma separated. For example [data1,data2,data3,data4], this is how the list produces output result. I tried replacing comma into space delimiter of the parameters in arraylist but it replaces all the comma into spaces.

My Code:

List<String> colValues = new ArrayList<String>();
   for (int i = 0; i < jTable1.getRowCount(); i++)
   {
       for(int j=0;j<jTable1.getRowCount();j++)
       {
                colValues.add((String) jTable1.getValueAt(i, j));
        }
    }
            String s1 = colValues.toString();
            JOptionPane.showMessageDialog(null, s1.replace("[", "(").replace("]", ")").replace(","," "));

Output:

I need to display the records of a row in space delimiter and after the row is printed, the comma delimiter should be used. For example of image screenshot (abc item1,xyz item2), suggest me a solution to do like this example. The scenario is to print output in a single line, suggest me a solution.

Thanks

Don't start by calling toString() on the list, and then replacing characters in that string. Instead, use a loop and concatenate each element of the list, with the separator you want. Or just use `list.stream().collect(Collectors.joining(" "));`. — JB Nizet, Nov 27 '17 at 07:24
Where i need to use list.stream().collect(Collectors.joining("")); statement and how to initialize. — Arunachalam, Nov 27 '17 at 07:29
Where you want to transform your list into a String. That's what your question is all about, isn't it? — JB Nizet, Nov 27 '17 at 07:34
After transforming list into string. The joining of all list values in a single line and For example of image screenshot (abc item1,xyz item2), after fetching of two values, the comma must involved. Likewise Row_1-column_1 column_2,Row_2-column_1 column_2, space delimiter in between two columns and comma after printing 2 column. — Arunachalam, Nov 27 '17 at 08:39
list.stream().collect(Collectors.joining("")); is not working, need to add any additional jar files is necessary or not. — Arunachalam, Nov 27 '17 at 11:42
Define "not working". But it probably means you're not using Java 8, but an obsolete version of Java. — JB Nizet, Nov 27 '17 at 12:14

List output using space delimiter and comma delimiter?

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