Here you can find the source of floatToString(float f, int precision)
static String floatToString(float f, int precision)
//package com.java2s; /*/*from w ww.j a v a2 s . c o m*/ * Copyright 1999 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. */ public class Main { /** * Convert float to string, with given precision. */ static String floatToString(float f, int precision) { String s = Float.toString(f); int i = s.lastIndexOf('.'); if (i == -1) return s; int end = i + precision + 1; return (end < s.length()) ? s.substring(0, end) : s; } }