Here you can find the source of createNumberFormat(int cnt)
private static NumberFormat createNumberFormat(int cnt)
//package com.java2s; /*//from www . j a v a2 s. co m * Copyright 2013 XPFriend Community. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.text.DecimalFormat; import java.text.NumberFormat; public class Main { private static NumberFormat createNumberFormat(int cnt) { StringBuilder sb = new StringBuilder(); sb.append("0"); if (cnt > 0) { sb.append("."); for (int i = 0; i < cnt; i++) { sb.append("0"); } } return new DecimalFormat(new String(sb)); } }