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package
FormatData;import java.text.DateFormat;import java.util.regex.Matcher;import java.util.regex.Pattern;import com.sun.org.apache.xerces.internal.impl.xpath.regex.ParseException;public class FormatData { private
static final Pattern intPattern = Pattern.compile("\\d+(\\.\\d{0,2})?"); //1. 字符串转化为数字 public
static float getFloatValue(String value) { Matcher matcher = intPattern.matcher(value); if
(matcher.find()) { return
Float.valueOf(matcher.group()); } return
0.0f; } //2. 比较日期 public
static boolean isDateBefore(String date1, String date2) throws
java.text.ParseException { try
{ DateFormat df = DateFormat.getDateTimeInstance(); boolean
result = df.parse(date1).before(df.parse(date2)); return
result; } catch
(ParseException e) { System.out.println(e.getMessage()); return
false; } }} |
原文：http://www.cnblogs.com/ry123/p/3716428.html