css_styles的博客

public static void main(String[] args) { // 实现四舍五入 double d=4.015; //d=7.485; //方法一 DecimalFormat df=new DecimalFormat("#.00"); df.setRoundingMode(RoundingMode.HALF_UP); Syst

需要导入两个jar包，commons-codec.jar和acegi-security-1.0.7.jar。import org.acegisecurity.providers.encoding.MessageDigestPasswordEncoder;public class MD5 { public static String encode(String str){ Me

import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date;public class DateUtil { public static final String FMT_FORE = "yyyy-MM-dd HH:mm:ss"; public static fina