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ʮһ javaÃæÏò¶ÔÏó³ÌÐòÉè¼Æ(µ¥Ì¬Éè¼ÆÄ£Ê½)
/**
* ÃæÏò¶ÔÏóÖ®Áù
* µ¥Ì¬Ä£Ê½Éè¼Æ
* ËùνÀàµÄµ¥Ì¬Éè¼ÆÄ£Ê½£¬¾ÍÊDzÉȡһ¶¨µÄ·½·¨±£Ö¤ÔÚÕû¸öµÄÈí¼þϵͳÖУ¬¶Ôij¸öÀàÖ»ÄÜ´æÔÚÒ»¸ö¶ÔÏóʵÀý£¬
* ²¢ÇÒ¸ÃÀàÖ»Ìṩһ¸öÈ¡µÃÆä¶ÔÏóʵÀýµÄ·½·¨¡£
*/
class Single
{
private static int count = 0;
private Single()//Ê×ÏȽ«¹¹Ôì»ú¶¨Òå³É˽ÓеÄ.
{
System.out.println("contructor is calling...");
System.out.println("we creat " + (++count) + " object");
}
private static Single single = new Single();
//ÔÚ¸ÃÀàÄÚ²¿²úÉúÒ»¸ö¶ÔÏó,²¢½«Æä¶¨ÒåΪstatic,ÕâÑù¾ÍÖ»ÓÐÒ»¸ö¶ÔÏóÁË.
public static Single getSingle()
//Ìṩһ¸ö¾²Ì¬·½·¨(ÒòΪ¶ÔÏóµÄÒýÓÃʱstaticµÄËùÒÔÒª¶¨Òå³É¾²Ì¬·½·¨),·µ»ØÕâΨһµÄ¶ÔÏó.
{
return single;
}
}
public class SingleTest {
public static void main(String[] args)
{
Single.getSingle();
Single.getSingle();
Single.getSingle();
Single.getSingle();
Single.getSingle();
}
}
/* ouput
contructor is calling...
we creat 1 object
*/
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