src/share/classes/sun/misc/FormattedFloatingDecimal.java

@@ -1015,12 +1015,20 @@
                 if (exp - 1 < -4 || exp - 1 >= precision) {
                     form = Form.SCIENTIFIC;
                     precision--;
                 } else {
                     form = Form.DECIMAL_FLOAT;
+                    if (digits.length == 1 && digits[0] == '0'
+                        && precision == 1) {
+                        // When the number is zero and precision is 1, set the 
+                        // precision to 0 so that a decimal point and digits
+                        // are not added by code later in this method.
+                        precision--;
+                    } else {
                     precision = precision - exp;
                 }
+                }
                 break;
             default:
                 assert false;
             }
             decExponentRounded = exp;