Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

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

JavaÖм¯ºÏÈÝÆ÷ÀàListºÍSetµÄÓ÷¨

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 ......

Java³ÌÐòÔ±µÄ֪ʶ¼Ü¹¹Ç³Îö

×÷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 ......

³õѧjava£¬Ò»Ð©¸ÅÄî

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˸ ......

Java Ï̱߳à³ÌÖеÄͬ²½¡¢Öظ´¡¢¶¨Ê±

£¨Ò»£©Ïß³Ìͬ²½
ʵÏÖÉú²úÕßÏû·ÑÕßÎÊÌâÀ´ËµÃ÷Ïß³ÌÎÊÌâ,¾ÙÀýÈçÏÂËùʾ:
/**
* Éú²úÕßÏû·ÑÕßÎÊÌâ
*/
public class ProducerConsumer {

/**
* Ö÷·½·¨
*/
public static void main(String[] args) {
ProductBox pb = new ProductBox ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ