Re: A string composed of a character repeated x number of times

Knute Johnson <>
Wed, 04 Apr 2007 09:13:02 -0700
Lew wrote:

Sathyaish wrote:

In Java, what function/method do we have for constructing composed of
a single character repeated x number of times.

I am looking for the .NET equivalant of this String class constructor:

public String(char c, int numTimesToRepeat);

I looked at the java.lang.String class' constructors and couldn't find
one that matched my needs.

There was a discussion in some time ago. The
"nicest" solution there was:

Michael Rauscher wrote:

String s = new String(new char[numTimesToRepeat]).replace((char)0, c);

The replace() has a test in it for (char) 0 at each array position.


char [] a = new char [numTimesToRepeat];
Arrays.fill( a, c );
String s = new String( a );

Less sexy but more efficient.

Sometimes you might want to start with a String rather than character.
I've had this in my tricks bag for a long time.

public class StringSet {
     public static String set(String str, int n) {
         StringBuilder sb = new StringBuilder(n);
         for (int i=0; i<n; i++)
         return sb.toString();


Knute Johnson
email s/nospam/knute/

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