java£ºdoubleÀàÐͽØÈ¡Á©Î»Ð¡Êý£¬²»È¡Éᣬ
public class Split{
public static void main(String[] args){
double pai = 3.14159;
findTwo(pai);
public static void findTwo(double value){
System.out.println(new DecimalFormat("0.##").format(value));
}
}
}
Ïà¹ØÎĵµ£º
ListµÄÓ÷¨
List°üÀ¨List½Ó¿ÚÒÔ¼°List½Ó¿ÚµÄËùÓÐʵÏÖÀà¡£ÒòΪList½Ó¿ÚʵÏÖÁËCollection½Ó¿Ú£¬ËùÒÔList½Ó¿ÚÓµÓÐCollection½Ó¿ÚÌṩµÄËùÓг£Ó÷½·¨£¬ÓÖÒòΪListÊÇÁбíÀàÐÍ£¬ËùÒÔList½Ó¿Ú»¹ÌṩÁËһЩÊʺÏÓÚ×ÔÉíµÄ³£Ó÷½·¨£¬Èç±í1Ëùʾ¡£
±í1 List½Ó¿Ú¶¨ÒåµÄ³£Ó÷½·¨¼°¹¦ÄÜ
´Ó±í1¿ÉÒÔ¿´³ö£¬List½Ó¿ÚÌṩµÄÊʺÏÓÚ×ÔÉíµÄ ......
×÷ΪJava³ÌÐòÔ±À´Ëµ£¬×îÍ´¿àµÄÊÂÇéιýÓÚ¿ÉÒÔÑ¡ÔñµÄ·¶Î§Ì«¹ã£¬¿ÉÒÔ¶ÁµÄÊéÌ«¶à£¬ÍùÍùÈÝÒ×ÎÞËùÊÊ´Ó¡£ÎÒÏë¾ÍÎÒ×Ô¼º¶Á¹ýµÄ¼¼ÊõÊé¼®ÖÐÌôÑ¡³öÀ´Ò»Ð©£¬°´ÕÕѧϰµÄÏȺó˳Ðò£¬ÍƼö¸ø´ó¼Ò£¬ÌرðÊÇÄÇЩÏë²»¶ÏÌá¸ß×Ô¼º¼¼ÊõˮƽµÄJava³ÌÐòÔ±ÃÇ¡£
¡¡¡¡Ò»¡¢Java±à³ÌÈëÃÅÀà
¡¡¡¡¶ÔÓÚûÓÐJava±à³Ì¾ÑéµÄJava³ÌÐòÔ±ÒªÈëÃÅ£¬Ëæ±ã¶ÁʲôÈëÃÅÊé ......
½ñÌì¸øÎÒÃÇÉϿεÄÊÇ·ëÍþÀÏʦ£¬ÀÏʦÒÔǰ¹¤×÷µÄ¹«Ë¾ÊǶÔÈÕÈí¼þ¿ª·¢µÄ£¬Óн«½üÊ®ÄêµÄ¹¤×÷¾ÑéÁË£¬ÖÚËùÖÜÖª£¬ÈÕ±¾È˶Թ¤×÷ÒªÇóÊÇÊ®·ÖÑϽ÷µÄ£¬¾ÝÀÏʦËù˵£¬ÒÔǰÔÚ¹«Ë¾±àÂëµÄʱºòÒªÇóÊÇÒ»ÐдúÂëÒ»ÐÐ×¢ÊÍ£¬Èç¹ûûÓÐ×¢Ê͵ϰÔÚÉóºËµÄʱºòÊDz»»áͨ¹ýµÄ£¬Ã»ÓÐ×¢ÊÍÊǻᱻ°´ÕÕbug´¦ÀíµÄ£¬ËùÒÔÏÖÔÚÀÏʦÉÏ¿ÎÏÖ³¡±àÂëµÄʱºòÒ²ÊÇÐÐÐÐдעÊÍ£ ......
1. javaÓëÆ½Ì¨Î޹ء£Ô´´úÂëÓɱàÒëÆ÷±àÒëΪ×Ö½ÚÂ루JVM¿ÉÖ´ÐдúÂ룩£»½âÊÍÆ÷ÔËÐÐJVM×Ö½ÚÂ루·ÒëΪ»úÆ÷Â룩¼´¿ÉµÃµ½Êä³ö½á¹û¡£
×Ö½ÚÂë¿ÉÔÚ¶à¸öƽ̨ÔËÐУ¬²»ÐèÒªÖØÐ±àÒë¡£
c±àÒëÆ÷ÔÚ±àÒëʱÉú³ÉµÄ´úÂëÊÇÕë¶ÔÌØ¶¨µÄÓ²¼þƽ̨²úÉúµÄ¡£
2. java¿ª·¢¹¤¾ßJDK¡£°²×°JDKʱ×Ô´øjre£¬¾ÍÊÇjavaÐéÄâ»ú¡£
jdkÊÇJava¿ª·¢¹¤¾ß°ü£¬°üº¬Á˸ ......
package com.njty.util;
public class Test {
private static final double EARTH_RADIUS = 6378137;
private static double rad(double d)
{
return d * Math.PI / 180.0;
}
  ......