I want to split string without creating two strings

Question

I want to split String without creating string array. Below is code

String output = "abc 0 0 222.1.2.3:12345 1.1.3.5:20000 55555";
        JSONArray listeningIpsArray = new JSONArray();
        if (StringUtils.isNotEmpty(output)) {
            String[] lines = output.split("\n");
            for (String line : lines) {
                if (StringUtils.isNotBlank(line)) {
                    String[] port = output.split("\\:");
                    for (String l : port) {
                        listeningIpsArray.put(l.trim());
                    }
                }
            }
            // String a[] =output.split("\\:");
            System.out.println("String" + listeningIpsArray);
        }
    }

When I run this code I got output as below. Array of 3 String elements is being created

String["abc 0 0 222.1.2.3","12345 1.1.3.5","20000 55555"]

But I need output in only one string as below.

String["abc 0 0 222.1.2.3 12345 1.1.3.5 20000 55555"]

Space between IP and port.

How can I do this ?

Why do you have String[] port = output.split("\\:"); if you don't want that? — Corion
– Corion, Commented Dec 26, 2018 at 12:35
Why dont you replace ":" with space." " String a = "abc 0 0 222.1.2.3:12345 1.1.3.5:20000 55555"; String r = a.replace(":"," "); System.out.println(r); — Serhat Oz
– Serhat Oz, Commented Dec 26, 2018 at 12:36
use StringBuilder and append all the splitted strings to builder with space and finally add it to listeningIpsArray as listeningIpsArray.put(builder.toString()); — Ramesh
– Ramesh, Commented Dec 26, 2018 at 12:37
if you really need to split the string, I would recommend to use StringUtils.join to join the strings by space after — nortontgueno
– nortontgueno, Commented Dec 26, 2018 at 12:39

Anjana · Accepted Answer · 2018-12-26 12:42:04Z

1

If this String output = "abc 0 0 222.1.2.3:12345 1.1.3.5:20000 55555"; is your input, and you want "abc 0 0 222.1.2.3 12345 1.1.3.5 20000 55555" as output, all you have to do is use output.replace(":", " ") i.e., simply replace all the colons with space. Hope this helps.

answered Dec 26, 2018 at 12:42

Anjana

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Serhat Oz · Accepted Answer · 2018-12-26 12:40:23Z

0

You have to use replace instead of split method for your purpose:

String output = "abc 0 0 222.1.2.3:12345 1.1.3.5:20000 55555";
JSONArray listeningIpsArray = new JSONArray();
if (StringUtils.isNotEmpty(output)) {
    String[] lines = output.split("\n");
    for (String line : lines) {
        if (StringUtils.isNotBlank(line)) {
            listeningIpsArray.put(l.trim().replace(":"," "));
        }
    }
    System.out.println("String" + listeningIpsArray);
}

answered Dec 26, 2018 at 12:40

Serhat Oz

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