Java Data Type How to - Capitalize a string

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Question

We would like to know how to capitalize a string.

Answer

//  w w  w .  ja v a 2s  .  c o  m
public class Main {

  public static void main(String[] args) {
    String s = "this is a test";

    System.out.println(capitalize(s));
  }

  public static String capitalize(String s) {
    if (s.length() == 0) {
      return s;
    }

    return s.substring(0, 1).toUpperCase() + s.substring(1).toLowerCase();
  }
}

The code above generates the following result.

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