Repeat a string: Difference between revisions

There are a few ways to achieve this in Java.<br />

Starting with Java 11 you can use the ''String.repeat'' method.

<syntaxhighlight lang="java">

"ha".repeat(5);

</syntaxhighlight>

Which, if you view its implementation, is just using the ''Arrays.fill'' method.

<syntaxhighlight lang="java">

String[] strings = new String[5];

Arrays.fill(strings, "ha");

StringBuilder repeated = new StringBuilder();

for (String string : strings)

repeated.append(string);

</syntaxhighlight>

And if you look at the 'Arrays.fill' implementation, it's just a for-loop, which is likely the most idiomatic approach.

<syntaxhighlight lang="java">

String string = "ha";

StringBuilder repeated = new StringBuilder();

int count = 5;

while (count-- > 0)

repeated.append(string);

</syntaxhighlight>

<br />

Or

Before Java 11 there was no method or operator to do this in Java, so you had to do it yourself.