LeftPad in Java

class LeftPad
{
  public static String leftPad(String inputStr, 
                               int paddedLength,
                               char ch) {
    if (paddedLength <= inputStr.length()) {
      return inputStr;  
    }
    
    StringBuilder sb = new StringBuilder();
    paddedLength = paddedLength - inputStr.length();
    for (int i = 0; i < paddedLength; ++i) {
      sb.append(ch);
    }
    
    sb.append(inputStr);
    return sb.toString();
  }
  
  public static String leftPad(String inputStr, 
                               int paddedLength) {
    return leftPad(inputStr, paddedLength, '.');
  }
  public static void main (String[] args) 
    throws java.lang.Exception {
    System.out.println(leftPad("1", 1));
    System.out.println(leftPad("2", 2));
    System.out.println(leftPad("3", 3));
    System.out.println(leftPad("4", 4));
    System.out.println(leftPad("5", 5));
    System.out.println(leftPad("hello", 7));
    System.out.println(leftPad("foo",  6));
    System.out.println(leftPad("foo", 3));
    System.out.println(leftPad("foobar", 3));
    System.out.println(leftPad("foo", 6, '?'));
  }
}