src/java.base/share/classes/java/time/format/DateTimeFormatterBuilder.java

rev 16194 : imported patch XXXXXXX-Use-StringBuilder-appendN-method

*** 2707,2718 ****
                          throw new DateTimeException("Field " + field +
                              " cannot be printed as the value " + value +
                              " cannot be negative according to the SignStyle");
                  }
              }
!             for (int i = 0; i < minWidth - str.length(); i++) {
!                 buf.append(decimalStyle.getZeroDigit());
              }
              buf.append(str);
              return true;
          }
  
--- 2707,2718 ----
                          throw new DateTimeException("Field " + field +
                              " cannot be printed as the value " + value +
                              " cannot be negative according to the SignStyle");
                  }
              }
!             if (minWidth > str.length()) {
!                 buf.appendN(decimalStyle.getZeroDigit(), minWidth - str.length());
              }
              buf.append(str);
              return true;
          }
  
*** 3124,3136 ****
              if (fraction.scale() == 0) {  // scale is zero if value is zero
                  if (minWidth > 0) {
                      if (decimalPoint) {
                          buf.append(decimalStyle.getDecimalSeparator());
                      }
!                     for (int i = 0; i < minWidth; i++) {
!                         buf.append(decimalStyle.getZeroDigit());
!                     }
                  }
              } else {
                  int outputScale = Math.min(Math.max(fraction.scale(), minWidth), maxWidth);
                  fraction = fraction.setScale(outputScale, RoundingMode.FLOOR);
                  String str = fraction.toPlainString().substring(2);
--- 3124,3134 ----
              if (fraction.scale() == 0) {  // scale is zero if value is zero
                  if (minWidth > 0) {
                      if (decimalPoint) {
                          buf.append(decimalStyle.getDecimalSeparator());
                      }
!                     buf.appendN(decimalStyle.getZeroDigit(), minWidth);
                  }
              } else {
                  int outputScale = Math.min(Math.max(fraction.scale(), minWidth), maxWidth);
                  fraction = fraction.setScale(outputScale, RoundingMode.FLOOR);
                  String str = fraction.toPlainString().substring(2);