"" + (char) b vs. Character.toString((char) b)

TestChar.java

public class TestChar {
  public static void main(String[] args) {
    long tests = 1000000000;
    byte b = (byte) 'b';

    long start = System.nanoTime();
    for (int i = 0; i < tests; i++) {
      String a = "" + (char) b;
    }
    System.out.println("Done: " + (System.nanoTime() - start) / 1000000000.0);

    start = System.nanoTime();
    for (int i = 0; i < tests; i++) {
      String a = Character.toString((char) b);
    }
    System.out.println("Done: " + (System.nanoTime() - start) / 1000000000.0);
  }
}

/**
 * Done: 3.401561704
 * Done: 3.238949012
 **/