JavaÖжÔÏóµÄÉúÃüÖÜÆÚ
£¨1£© ¶ÔÏóÉúÃüÖÜÆڵĿªÊ¼
¶ÔÏóÉúÃüÖÜÆÚ¿ªÊ¼Ê±£¬ÐèҪΪ¶ÔÏó·ÖÅäÄڴ棬²¢ÇÒ³õʼ»¯ËüµÄʵÀý±äÁ¿£»
¶ÔÏóÉúÃüÖÜÆÚ½áÊø
JavaÐéÄâ»úµÄÀ¬»ø»ØÊÕÏ̻߳ØÊÕ¶ÔÏóµÄÄÚ´æ¡£
£¨2£© ´´½¨Ò»¸ö¶ÔÏóÖ¸´´½¨Ò»¸öÀàµÄʵÀý£¬Ç°ÌáÊÇÀà±»³õʼ»¯£¬¶ÔÏó¿ÉÒÔ±»ÏÔʽ»òÕßÒþʽ´´½¨£¬ÏÔʽ´´½¨¶ÔÏóÓÐÒÔϼ¸ÖÖ·½Ê½
a. newÓï¾ä´´½¨¶ÔÏó
b.ÀûÓ÷´Éä»úÖÆ£¬µ÷ÓÃjava.lang.ClassµÄforName()ºÍjava.lang.reflect.ConstructorµÄnewInstance()·½·¨
Class objClass = Class.forName("Customer");
Customer c = (Customer)objClass.newInstance();
c.µ÷ÓöÔÏóµÄclone()·½·¨
d.ÔËÓ÷´ÐòÁл¯·½·¨£¬µ÷ÓÃjava.io.ObjectInputStreamÀàµÄreadObject()·½·¨
£¨3£©Ê¹ÓÃnew»òÕß·´ÉäµÄ·½·¨Ê±£¬»áÖ´ÐÐÀàµÄ¹¹Ô캯Êý£¬Ê¹ÓöÔÏóµÄclone·½·¨£¬²»»áµ÷Óù¹Ô캯Êý¡£
£¨4£©¹ØÓÚclone()
a. ObjectÀàÖÐÉùÃ÷ΪprotectedÀàÐÍ£¬Èç¹ûObjectµÄ×ÓÀàÏë¶ÔÍ⹫¿ªclone()·½·¨£¬ÐèÒªÀ©´ó·ÃÎÊȨÏÞ£»
b. ʹÓÃclone()·½·¨ÐèҪʵÏÖCloneable½Ó¿Ú£»
c.µ÷ÓÃclone()·½·¨»á´´½¨Ò»¸ö¸´ÖƵĶÔÏó£¬Õâ¸ö¶ÔÏóºÍÔÀ´µÄ¶ÔÏó¾ßÓв»Í¬µÄÄÚ´æµØÖ·£¬µ«ÊÇËûÃǵÄÊôÐÔÖµÏàͬ£»
£¨5£©ÒþʽµØ´´½¨¶ÔÏó
a. javaÃüÁîµÄÃüÁîÐвÎÊý
b. StringÀàÐ͵ÄÖ±½ÓÊý¶ÔÓ¦Ò»¸öString¶ÔÏó
c. ×Ö·û´®²Ù×÷·û“+”½á¹ûΪһ¸öеÄString¶ÔÏó
&
Ïà¹ØÎĵµ£º
°¥£¡×ªÑ۾͹ýÁËÒ»ÄêÁË£¬ÎÒºÃÏñʲô¶«Î÷¶¼Ñ§²»µ½Ñ½£¬ÕâÒªÈçºÎÊǺ𡣬ÕæµÄÐÄÀïºÜ¼±°¡£¡£¡£¡ÄĸöJAVA¸ßÊÖÖ¸µãÏÂÎÒÕâ¸öºó±²¿©£¬ÎÒ»áÍò·Ö¸ÐлÀ࣬ºÇºÇ£¬ºÜ¿ÉÄÜÊÇÎÒÀÏʦ²»Ðа¡£¡Ëý×Ô¼ºÉϿζ¼ÄÜ×ö³ö´íÎó³ÌÐò³öÀ´£¬»¹ôòÊǸöÈ˲ţ¬ÎÒ²»µÃ²»Åå·þËý°¡£¬ÎÒÃÇ°àÉÏÒ²ÓкöàÈËÔÚ˵ËýÊÇÔõôÔõôµÄ²î£¬°¥£¡ÎÒ¶¼²»Ï ......
Ò»¡¢ÏòÉÏתÐÍ¡£
ͨË׵ؽ²¼´Êǽ«×ÓÀà¶ÔÏóתΪ¸¸Àà¶ÔÏó¡£´Ë´¦¸¸Àà¶ÔÏó¿ÉÒÔÊǽӿڡ£
1£¬ÏòÉÏתÐÍÖеķ½·¨µ÷Óá£
¿´ÏÂÃæ´úÂ룺
package com.wensefu.others;
public class Animal {
public void eat(){
System.out.println("animal eatting...");
}
}
class Bird extends Animal{
public void ......
ϵͳ×Ô¶¯Å׳öµÄÒì³£
ËùÓÐϵͳ¶¨ÒåµÄ±àÒëºÍÔËÐÐÒì³£¶¼¿ÉÒÔÓÉϵͳ×Ô¶¯Å׳ö£¬³ÆΪ±ê×¼Òì³££¬²¢ÇÒ Java Ç¿ÁÒµØÒªÇóÓ¦ÓóÌÐò½øÐÐÍêÕûµÄÒì³£´¦Àí£¬¸øÓû§ÓѺõÄÌáʾ£¬»òÕßÐÞÕýºóʹ³ÌÐò¼ÌÐøÖ´ÐС£
Óï¾äÅ׳öµÄÒì³£
Óû§³ÌÐò×Ô¶¨ÒåµÄÒì³£ºÍÓ¦ÓóÌÐòÌض¨µÄÒì³£,±ØÐë½èÖúÓÚ throws ºÍ throw Óï¾äÀ´¶¨ÒåÅ׳öÒì³£¡£
throwÊÇÓï¾äÅ׳ö ......
¹ØÓÚvolatile
ÎÒÃÇÖªµÀ£¬ÔÚJavaÖÐÉèÖñäÁ¿ÖµµÄ²Ù×÷£¬³ýÁËlongºÍdoubleÀàÐ͵ıäÁ¿ÍⶼÊÇÔ×Ó²Ù×÷£¬Ò²¾ÍÊÇ˵£¬¶ÔÓÚ±äÁ¿ÖµµÄ¼òµ¥¶Áд²Ù×÷ûÓбØÒª½øÐÐͬ²½¡£
ÕâÔÚJVM 1.2֮ǰ£¬JavaµÄÄÚ´æÄ£ÐÍʵÏÖ×ÜÊÇ´ÓÖ÷´æ¶ÁÈ¡±äÁ¿£¬ÊDz»ÐèÒª½øÐÐÌرðµÄ×¢ÒâµÄ¡£¶øËæ×ÅJVMµÄ³ÉÊìºÍÓÅ»¯£¬ÏÖÔÚÔÚ¶àÏ̻߳·¾³ÏÂ
volatile¹Ø¼ü×ÖµÄʹÓñäµÃ·Ç³£ÖØ ......
Publication and Escape ·¢²¼Ò»¸ö¶ÔÏóÒâζ×ÅÄܹ»´ÓËüÄܹ»´ÓËüµ±Ç°·¶Î§Ö®Íâ±»·ÃÎʵ½¡£±ÈÈ磬±£´æ¿ÉÒÔ±»ÆäËû´úÂëÕÒµ½µÄÕâ¸ö¶ÔÏóµÄÒ»¸öÒýÓ㬻òÕß½«Æä×÷Ϊһ¸ö·Ç˽Óз½·¨µÄ·µ»ØÖµ£¬»òÕß½«Æä×÷Ϊ²ÎÊý´«µÝ¸øÆäËüµÄÀà¡£ public static Set<Secret> knownSecrets;
public void initialize() {
knownSecrets = new Ha ......