Java¼¸ÖÖ½¨Á¢ÊµÀýµÄ·½·¨
Java¼¸ÖÖ½¨Á¢ÊµÀýµÄ·½·¨
new
ÀûÓÃJava¹Ø¼ü×ÖnewÀ´½¨Á¢¶ÔÏóʵÀýÊÇJavaÖÐ×îΪ³£¼ûÒ²ÊÇ×îΪ¼òµ¥µÄ½¨Á¢¶ÔÏóʵÀýµÄ·½·¨¡£Èô³ÌÐòд³ÉÈçÏÂÐÎʽ£¬
Ôò¿É½¨Á¢somethingÀàµÄ¶ÔÏóʵÀýºóÔÙÖ¸¶¨µ½±äÁ¿obj¡£
something obj=new something();
´Ëʱ£¬±ØÐë°ÑÀàÃû(ÔÚ´ËΪsomething)дÔÚÔ´ÂëÖ®ÄÚ¡£
clone
ÈôÀûÓÃclone·½·¨£¬Ôò¿É¸ù¾ÝÏÖÓеĶÔÏóʵÀýÀ´½¨Á¢ÀïÒ»¸öжÔÏóʵÀý¡£ÀûÓÃclone·½·¨À´½¨Á¢¶ÔÏóʵÀýÖ»ÏÞÓÚʵÏÖ
ÁËjava.lang.Cloneable½Ó¿ÚµÄÀà¡£Èç¹ûûÓÐʵÏָýӿڣ¬Ôò»áÅ׳öCloneNotSupportedExceptionÒì³£¡£Èô³ÌÐò
д³ÉÈçÏ£¬Ôò¿É¸ù¾Ýµ±Ç°¶ÔÏó±¾Éí½¨Á¢ÁíÒ»¸ö¶ÔÏóʵÀý(µ«²¢Î´ÀûÓù¹Ôì·½·¨)¡£
class Something
{
//codes
public Something createClone()
{
Something obj=null;
try
{
obj=(Something)clone();
}
catch(CloneNotSupportedException e)
{
e.printStackTrack();
}
return obj;
}
}
newInstance
ÀûÓÃjava.lang.ClassÀàµÄnewInstance·½·¨£¬¿ÉÒÔ¸ù¾ÝClassµÄ¶ÔÏóʵÀý£¬½¨Á¢¸ÃClassËù±íʾµÄÀàµÄ¶ÔÏóʵ
Àý(µ÷ÓÃÎÞ²ÎÊýµÄ¹¹Ôì·½·¨)
ÏÂÃæÊÇSomethingÀàµÄ¶ÔÏóʵÀýsomeobj£¬Ôò¿ÉÒÔÓÃÏÂÃæµÄ±í´ïʽ½¨Á¢Ò»¸öSomethingÀàµÄ¶ÔÏóʵÀý¡£
someobj.getClass().newInstance();
//or next codes
Something obj=Class.forName(Something).newIntance();
ÖµµÃ×¢ÒâµÄÊÇ£¬newIinstance·½·¨»áÅܳöInstantiationException»òÕßIllegalAcsessExceptionÒì³££¬ËùÒÔ
Ó¦¸ÃÔÚcatchÓï¾ä¿éÖв¶»ñÕâ¸öÒì³£¡£
Ïà¹ØÎĵµ£º
ת×Ô£ºhttp://blog.csdn.net/daijialin/archive/2004/12/27/231384.aspx
ÔÚJDK 1.4ÒÔǰ£¬JavaµÄIO²Ù×÷¼¯ÖÐÔÚjava.ioÕâ¸ö°üÖУ¬ÊÇ»ùÓÚÁ÷µÄ×èÈû£¨blocking£©API¡£¶ÔÓÚ´ó¶àÊýÓ¦ÓÃÀ´Ëµ£¬ÕâÑùµÄAPIʹÓúܷ½±ã£¬È»¶ø£¬Ò»Ð©¶ÔÐÔÄÜÒªÇó½Ï¸ßµÄÓ¦Óã¬ÓÈÆäÊÇ·þÎñ¶ËÓ¦Óã¬ÍùÍùÐèÒªÒ»¸ö¸üΪÓÐЧµÄ·½Ê½À´´¦ÀíIO¡£´ÓJDK 1.4Æð£¬NIO API×÷Î ......
javaÓïÑÔµ÷ÓÃdllµÄ·½·¨£º
1¡£¼ÓÔØdll£¬±ØÐëÊǾ²Ì¬·½·¨¡£
static{
System.loadLibrary(DllConstants.DLL_PATH);
}
2¡£½«dllÖпª·¢µÄ½Ó¿ÚÉùÃ÷Ϊ±¾µØ½Ó¿Ú
public native String[] getTxt();
......
×ֺţº´ó ÖРС
import java.awt.Graphics;
import java.io.File;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;
public class M ......
ÎÒÃÇÔÚ½øÐÐWEB¿ª·¢µÄʱºò£¬¾³£ÐèÒªÔÚ¿Í»§¶Ë±àдһЩjsº¯Êý£¬ÕâЩº¯ÊýÈç¹ûÐèÒªÔÚ·þÎñ¶ËÖ´Ðеϰ£¬Èç¹ûÖØÐ±àдµÄ»°£¬¾ÍÏÔµÃÊ®·ÖÈßÓ࣬Òò´ËÎÒÃÇ¿ÉÒÔ³¢ÊÔÔÚ·þÎñ¶Ë£¬Ö±½ÓÖ´ÐÐjs£¬ÕâÑùµÄ»°¾Í¿ÉÒÔ±ÜÃâÖØ¸´ÀͶ¯£¬Í¬Ê±£¬µ÷ÓÃjsÒ²Óиöº¯Êý£¬¾ÍÊǷdz£·½±ãµ÷ÊÔ¡£
×î¹Ø¼üµÄÒ»²½¾ÍÊǵ÷ÓÃ
conext.evaluateString(scope,&n ......
JavaµÄ¶ÑÊÇÒ»¸öÔËÐÐʱÊý¾ÝÇø,ÀàµÄ(¶ÔÏó´ÓÖзÖÅä¿Õ¼ä¡£ÕâЩ¶ÔÏóͨ¹ýnew¡¢newarray¡¢anewarrayºÍmultianewarrayµÈ Ö¸ÁÁ¢£¬ËüÃDz»ÐèÒª³ÌÐò´úÂëÀ´ÏÔʽµÄÊÍ·Å¡£¶ÑÊÇÓÉÀ¬»ø»ØÊÕÀ´¸ºÔðµÄ£¬¶ÑµÄÓÅÊÆÊÇ¿ÉÒÔ¶¯Ì¬µØ·ÖÅäÄÚ´æ´óС£¬Éú´æÆÚÒ²²»±ØÊÂÏȸæËß±àÒëÆ÷£¬ÒòΪËüÊÇÔÚÔËÐÐʱ ¶¯Ì¬·ÖÅäÄÚ´æµÄ£¬JavaµÄÀ¬»øÊÕ¼¯Æ÷»á×Ô¶¯ÊÕ×ßÕâЩ²»ÔÙ ......