java º¯Êý²ÎÊýµÄ´«µÝÎÊÌâ¡£
×î½üÔÚѧϰjavaµÄʱºò£¬¶ÔÓÚjavaº¯ÊýµÄ´«µÝÁ˽âÁËһϡ£javaµÄÊý¾ÝÀàÐÍ´óµÄ·ÖΪÁ½ÖÖ£¬Ò»ÖÖÊÇ»ù±¾Êý¾ÝÀàÐÍ£¬ÁíÒ»ÖÖÊÇ·Ç»ù±¾Êý¾ÝÀàÐÍ£¬£¨ÀàÊý¾ÝÀàÐÍ£©¡£ÔÚ²ÎÊý´«µÝʱºò£¬»ù±¾µÄÊý¾ÝÀàÐÍ´«µÝµÄÊǶÔʵ²ÎÊýµÄÒ»·Ý¿½±´£¬¶ø·Ç»ù±¾Êý¾ÝÀàÐÍÔòÊÇʵÀýµÄÒýÓõÄÒ»·Ý¿½±´¡£ÎÒµÄÀí½âÊÇÀàµÄʵÀý£¬¼´¶ÔÏó´æ·ÅµÄÄÚÈݾÍÊÇÒýÓã¬Êµ¼ÊÊǵØÖ·¡£
ÏÂÃæµÄÄÚÈÝÒýÓõØÖ·ÈçÏ£ºhttp://blog.sina.com.cn/s/blog_5198c7370100dut4.html
javaº¯ÊýÖеĴ«ÖµºÍ´«ÒýÓÃÎÊÌâÒ»Ö±ÊǸö±È½Ï“аÃÅ”µÄÎÊÌ⣬Æäʵjavaº¯ÊýÖеIJÎÊý¶¼ÊÇ´«µÝÖµµÄ£¬Ëù²»Í¬µÄÊǶÔÓÚ»ù±¾Êý¾ÝÀàÐÍ´«µÝµÄÊDzÎÊýµÄÒ»·Ý¿½±´£¬¶ÔÓÚÀàÀàÐÍ´«µÝµÄÊǸÃÀà²ÎÊýµÄÒýÓõĿ½±´£¬µ±ÔÚº¯ÊýÌåÖÐÐ޸IJÎÊýֵʱ£¬ÎÞÂÛÊÇ»ù±¾ÀàÐ͵IJÎÊý»¹ÊÇÒýÓÃÀàÐ͵IJÎÊý£¬Ð޸ĵÄÖ»ÊǸòÎÊýµÄ¿½±´£¬²»Ó°Ï캯Êýʵ²ÎµÄÖµ£¬Èç¹ûÐ޸ĵÄÊÇÒýÓÃÀàÐ͵ijÉÔ±Öµ£¬Ôò¸Ãʵ²ÎÒýÓõijÉÔ±ÖµÊÇ¿ÉÒԸıäµÄ£¬Àý×ÓÈçÏ¡£
Ê×ÏÈÊǶ¨Òå¸Ä±ä²ÎÊýµÄ
public static void changeInt(int i){//¸Ä±äintÐͱäÁ¿µÄº¯Êý
i=100;
}
public static void changeString(String s){//¸Ä±äStringÐͱäÁ¿µÄº¯Êý
s="changeString";
}
public static void changeModel(Model model){//¸Ä±äModelÐͱäÁ¿µÄº¯Êý
model=new Model();
model.i=1;
model.s="changeModel";
}
public static void changeModel2(Model model){//¸Ä±äModelÐͱäÁ¿µÄ³ÉÔ±µÄº¯Êý
model.i=1;
model.s="changeModel";
}
ÀàModel
class Model{
public int i=0;
public String s="no value";
}
²âÊÔ³ÌÐò
public static void main(String[] args) {
int i=0;
String s="hello";
Model model=new Model();
Model model2=new Model();
changeInt(i);
System.out.println("i="+i);
changeString(s);
System.out.println("s="+s);
changeModel(model);
System.out.println("model:"+model.s);
changeModel2(model2);
System.out.println("model2:"+model2.s);
}
²âÊÔ½á¹û£º
i=0
s=hello
model:no value
model2:changeModel
¿ÉÒÔ¿´³öiûÓиı䣬sҲûÓиı䣬modeҲûÓиı䣬model2µÄs¸Ä±äÁË¡£
×ܽ᣺javaÖеÄÐβÎÊÇ
Ïà¹ØÎĵµ£º
ÄãÔø¾ÐèÒªÓ¦ÓÃÖ´ÐÐÒ»¸öÈÎÎñÂð£¿Õâ¸öÈÎÎñÿÌì»òÿÖÜÐÇÆÚ¶þÍíÉÏ11£º30£¬»òÐí½ö½öÿ¸öÔµÄ×îºóÒ»ÌìÖ´ÐС£Ò»¸ö×Ô¶¯Ö´ÐжøÎÞÐë¸ÉÔ¤µÄÈÎÎñÔÚÖ´Ðйý³ÌÖÐÈç ¹û·¢ÉúÒ»¸öÑÏÖØ´íÎó£¬Ó¦ÓÃÄܹ»Öªµ½ÆäÖ´ÐÐʧ°Ü²¢³¢ÊÔÖØÐÂÖ´ÐÐÂð£¿ÄãºÍÄãµÄÍŶÓÊÇÓÃjava±à³ÌÂð£¿Èç¹ûÕâЩÎÊÌâÖÐÈκÎÒ»¸öÄã»Ø´ðÊÇ£¬ÄÇôÄãÓ¦¸ÃʹÓà Quartzµ÷¶ÈÆ÷¡£
¡¡¡¡
¡¡¡¡ ......
¡¡¡¡ÔõôÈóÌÐòÀûÓÃËÑË÷ÒýÇæÀ´ËѼ¯ÍøÖ·£¬ÕâÓÐʲôÓÃ?ºÜÓÐÓÃ!ÍøÉ϶¯éüÓÐÈ˽ÐÂôÍøÖ·Êý¾Ý¿â£¬Èç·¢²¼Èí¼þÍøÖ·¡¢ÓʼþµØÖ·¡¢ÂÛ̳ÍøÖ·¡¢ÐÐÒµÍøÖ·£¬ÕâЩÍøÖ·ÊÇÔõôÀ´µÄÄØ?²»¿ÉÄÜÊÇÈËÊÖ¹¤ÊÕ¼¯¶øÀ´µÄ£¬¶¼ÊÇÈóÌÐòÀûÓÃËÑË÷ÒýÇæÈ¡µ½µÄ£¬Èç¹ûÄúÐèҪijÀàÍøÖ·ÐÅÏ¢Êý¾Ý£¬¾Í¸ú³É¶¼ÀÊÎÖ½ÌÓýÀ´Ò»ÆðÑо¿Ò»Ï£¬·Ç³£¼òµ¥¡£
¡¡¡¡±¾ÎIJÉÓÃJavaÓïÑÔÐ ......
package tao.hai.bing;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
public class LoadJar {
public static void main(String[] args)
{
Syst ......
1.
˳Ðò¿ØÖÆ
if
else
switch
¿ÉÒÔÓÃbyte,short,char,int×öΪ±í´ïʽÀàÐÍ
Ñ»·½á¹¹
while
do ...while
for
±êÇ©Ìøת£º
outer:
break outer;
outer:
continue outer;
2.Êý×éÀàÐÍ
Êý×éÒ²ÊÇÒ»ÖÖÊý¾ÝÀàÐÍ£¬Ëü±¾ÉíÊÇÒýÓÃÀàÐÍ¡£
¾²Ì¬³õʼ»¯£º³ÌÐòÔ±ÏÔʾָ¶¨³õʼֵ£¬ÏµÍ³¾ö¶¨³¤¶È¡£
¶¯Ì¬ ......
keytool -genkey -dname "CN=demo, OU=softDept, O=company,
L=puddong,S=shanghai, C=cn" -alias demo -keyalg RSA -keysize 1024
-keystore demoKeystore -validity 3650 -storepass storePwd -keypass
demoPwd
Éú³É±£´æ¹«Ô¿ºÍ˽ԿµÄÃÜÔ¿²Ö¿â£¬±£´æÔÚdemoKeystoreÎļþÖС£ÕâÀïstorepass ......