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public class Platypus {
String name;
Platypus(String input) {
   name = input;
   }
Platypus() {
   this("John/Mary Doe");
   }
public static void main(String args[]) {
   Platypus p1 = new Platypus("digger");
      Platypus p2 = new Platypus();
    }
}
    ÔÚÉÏÃæµÄ´úÂëÖУ¬ÓÐ2¸ö²»Í¬²ÎÊýÁбíµÄ¹¹ÔìÆ÷¡£µÚÒ»¸ö¹¹ÔìÆ÷£¬¸øÀàµÄ³ÉÔ±name¸³Öµ£¬µÚ¶þ¸ö¹¹ÔìÆ÷£¬µ÷ÓõÚÒ»¸ö¹¹ÔìÆ÷£¬¸ø³ÉÔ±±äÁ¿nameÒ»¸ö³õʼֵ "John/Mary Doe".
×¢Ò⣺¾¡¹Ü¿ÉÒÔÓÃthisµ÷ÓÃÒ»¸ö¹¹ÔìÆ÷£¬µ«È´²»Äܵ÷ÓÃÁ½¸ö¡£´ËÍ⣬±ØÐ뽫¹¹ÔìÆ÷µ÷ÓÃÖÃÓÚ×îÆðʼλÖ㬷ñÔò±àÒë»á³ö´í¡£
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2.ÎÞÂÛ¹¹ÔìÆ÷ºÍ·½·¨£¬¶¼Óùؼü×ÖsuperÖ¸Ïò³¬À࣬µ«ÊÇÓõķ½·¨²»Ò»Ñù¡£·½·¨ÓÃÕâ¸ö¹Ø¼ü×ÖÈ¥Ö´Ðб»ÖØÔصij¬ÀàÖеķ½·¨¡£
class Mammal1{
     void getBirthInfo() {
        System.out.println("born alive.");
   }
}
class Platypus2 extends Mammal {
    void getBirthInfo() {
       System.out.println("hatch from eggs");
       System.out.print("a mammal normally is ");
        super.getBirthInfo();
   }
}
public class TestMammal{ 
   public static void main(String[] args){
      Platypus2 pl = new Platypus2();
   }
}
 
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sql 2005 ´æ´¢¹ý³Ì·ÖÒ³ java ´úÂë

 create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',         
@pagesize int output,--ÿҳÏÔʾ¼Ç¼ÌõÊý
@currentpage int output,--µÚ¼¸Ò³
@orderid nvarchar(50),--Ö÷¼üÅÅÐò
@sort int,--ÅÅÐò·½Ê½£¬1±íʾÉýÐò£¬0±íʾ½µÐòÅÅÁÐ ......

JAVA Ö®"·´Éä"


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    ÎÒÃÇ¿ÉÒÔÓÃclass Person{ }   class Animal{ }À´ÃèÊöÒ»ÀàÈË»òÒ»ÀදÎ
    ÄÇôÔÙÏëһϣ¬ÎÒÃÇÊDz»ÊÇ¿ÉÒÔÓÃclass Class{ } À´³éÏóÃèÊöÀàÄØ£¿
    ´ð°¸Ê±¿ÉÒԵģ¬Õâ¾ÍÊÇjdkÖÐµÄ Class ÀࣨÀàÐ ......

JavaÖÐJList¼òµ¥Ó¦ÓÃ

 ×î½üѧϰjavaÓõ½ÁËJList,¶ÔÓÚÏòJListÖÐÌí¼ÓÊý¾Ý£¬À§ÈÅÁ˺þã¬ÉÏÍø²é¸øµÄ´ð°¸¶¼Ã»¸öºÏÊʵģ¬ÎÊÁËÀÏʦ²ÅŪÃ÷°×Щ£¬×ܽáÈçÏ£º
1.ʹÓÃVector£ºÊ×ÏÈ°ÑÄãµÄÊý¾ÝÏ´æ·ÅÔÚVectorÖУ¬È»ºóµ÷ÓÃJListµÄsetListData()·½·¨£¬½«VectorÌí¼Óµ½JListÖÐ
   Vector vt=new Vector();
   JList list=new JLis ......

An agile dynamic language for the Java Platform

 Groovy supports a few neat ways to work with SQL more easily and to make SQL more Groovy. You can perform queries and SQL statements, passing in variables easily with proper handling of statements, connections and exception handling thanks to closures.
import groovy.sql.Sql
def foo = 'cheese ......
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