Split string into defiled length and have it into multiple rows and append space

Question

String

string1 = 3N10:35, 4510:36, 3N10:35, 4510:36, 3N10:35, 4510:36, 3N10:35

after splitting it should be as below

"3N10:35, 4510:36, 3N10:35, 4510:36" -- length 34 chars

"3N10:35, 4510:36, 3N10:35-----------" -- length 34 char (appending with space at the end)

String

string2=3N10:35, 4511:36, 3N12:35, 4516:36, 3N19:35, 4521:36, 3N19:35, 3N19:18, 4522:31, 3N22:12

after splitting it should be as below

"3N10:35, 4511:36, 3N12:35, 4516:36" - length 34 chars

"3N19:35, 4521:36, 3N19:35, 3N19:18" - length 34 chars

"4522:31, 3N22:12------------------" - length 34 char (appending with space at the end)

how to achieve in Java

can you please give me an example on how to split on every 4th comma — Deep, Jun 07 '20 at 16:40
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score 0 · Accepted Answer · answered Jun 07 '20 at 17:51

The following solution works fine:

String[] arr = s.split("(?<=\\G(.{7}\\,\\s?){4}+)"); // split by each 4-th comma optionally followed by a space

Arrays.stream(arr)
      .map(st -> String.format("[%-34.34s]", st)) // set required width, removing redundant ", " at the end, using [] to display appended whitespaces
      .forEach(System.out::println);

Output for the input strings:

[3N10:35, 4510:36, 3N10:35, 4510:36]
[3N10:35, 4510:36, 3N10:35         ]

[3N10:35, 4511:36, 3N12:35, 4516:36]
[3N19:35, 4521:36, 3N19:35, 3N19:18]
[4522:31, 3N22:12                  ]

Thank you, Alex. Worked for me. – Deep Jun 07 '20 at 18:28 — Deep, Jun 07 '20 at 18:28

Split string into defiled length and have it into multiple rows and append space

1 Answers1