Here you can find the source of toFloat(final Object o, final String pattern)
public static Float toFloat(final Object o, final String pattern)
//package com.java2s; /*//from w w w . ja va2 s . c o m * Copyright 2004-2012 the Seasar Foundation and the Others. * * 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.SimpleDateFormat; public class Main { public static Float toFloat(final Object o) { return toFloat(o, null); } public static Float toFloat(final Object o, final String pattern) { if (o == null) { return null; } else if (o instanceof Float) { return (Float) o; } else if (o instanceof Number) { return new Float(((Number) o).floatValue()); } else if (o instanceof String) { return toFloat((String) o); } else if (o instanceof java.util.Date) { if (pattern != null) { return new Float(new SimpleDateFormat(pattern).format(o)); } return new Float(((java.util.Date) o).getTime()); } else { return toFloat(o.toString()); } } private static Float toFloat(final String s) { if (s == null || s.isEmpty()) { return null; } return new Float(s); } }