How to construct string like new String('A', 30) in Java

Question

I'm studying Java recently.

Is there any way to make a string from char with N-times?

C#: string str = new string('A', 30);

Java: ???

please help me. Thank you

Check this: https://stackoverflow.com/questions/1235179/simple-way-to-repeat-a-string-in-java — 0xh3xa, Mar 26 '20 at 12:07
Does this answer your question? [Simple way to repeat a String in java](https://stackoverflow.com/questions/1235179/simple-way-to-repeat-a-string-in-java) — B. Go, Mar 26 '20 at 13:55

score 3 · Accepted Answer · answered Mar 26 '20 at 12:09

3

What version of java are you using?

If Java 8

String.join("", Collections.nCopies(n, s));

If Java 11

"abc".repeat(12);

answered Mar 26 '20 at 12:09

nz_21

Thats a cool j8 solution, didn't know of that! – Jason Mar 26 '20 at 12:11
Thank you for you answer. I'm using Java8 and solved as 'String str = String.join("", Collections.nCopies(30,"A"));' – JaeChul Kim Mar 26 '20 at 12:22
@JaeChulKim if it works, please accept the answer (hit the tick button). – nz_21 Mar 26 '20 at 12:26

score 0 · Answer 2 · answered Mar 26 '20 at 12:11

0

This is one way you could do it using Java 8 Streams.

        String aNTimes = IntStream.range(0, 30)
                .mapToObj(index -> "A")
                .collect(Collectors.joining());

answered Mar 26 '20 at 12:11

Jason

2 Answers2