JAVA·´ÉäÀà
import java.lang.reflect.Array;
public class ReflectionTest {
public static void main(String[] args) {
try {
Example obj = new Example();
java.lang.reflect.Field[] F1 = obj.getClass().getDeclaredFields();
String Name = new String();
for (int i = 0; i < F1.length; i++) {
System.out.println(F1[i].getType());
System.out.println(F1[i].getName());
Name = F1[i].getName();
}
//Assume that you have known that "F1[1]" is the char array
int length = Array.getLength(F1[1].get(obj));
System.out.println("The length of c1 is: " + length);
} catch (Exception e) {
System.out.println("err occur");
}
}
}
class Example {
int I1 = 3;
char c1[] = new char[10];
}
Ïà¹ØÎĵµ£º
61¡¢servletµÄÉúÃüÖÜÆÚ
webÈÝÆ÷¼ÓÔØservlet£¬ÉúÃüÖÜÆÚ¿ªÊ¼¡£Í¨¹ýµ÷ÓÃservletµÄinit()·½·¨½øÐÐservletµÄ³õʼ»¯¡£Í¨¹ýµ÷ÓÃservice()·½·¨ÊµÏÖ£¬¸ù¾ÝÇëÇóµÄ²»Í¬µ÷Óò»Í¬µÄdo***()·½·¨¡£½áÊø·þÎñ£¬webÈÝÆ÷µ÷ÓÃservletµÄdestroy()·½·¨¡£
62¡¢ÈçºÎÏÖʵservletµÄµ¥Ïß³Ìģʽ
......
¿ÉÄܺܶàjavaµÄ³õѧÕß¶ÔStringµÄ´æ´¢ºÍ¸³ÖµÓÐÃÔ»ó£¬ÒÔÏÂÊÇÒ»¸öºÜ¼òµ¥µÄ²âÊÔÓÃÀý£¬ÄãÖ»ÐèÒª»¨¼¸·ÖÖÓʱ¼ä±ã¿ÉÀí½â¡£
1.ÔÚ¿´Àý×Ó֮ǰ£¬È·±£ÄãÀí½âÒÔϼ¸¸öÊõÓ
Õ» £ºÓÉJVM·ÖÅäÇøÓò£¬ÓÃÓÚ±£´æÏß³ÌÖ´Ðе͝×÷ºÍÊý¾ÝÒýÓá£Õ»ÊÇÒ»¸öÔËÐеĵ¥Î»£¬JavaÖÐÒ»¸öÏ߳̾ͻáÏàÓ¦ÓÐÒ»¸öÏß³ÌÕ»ÓëÖ®¶ÔÓ¦¡£
¶Ñ £ºÓÉJVM·ÖÅä ......
oracleÖеÄBLOB×Ö¶ÎÊÇ´æ´¢2½øÖƵÄÎļþ£¬±ÈÈçÎļþ£¬Í¼Æ¬µÈ¡£
1¡¢°Ñ±¾µØÎļþдÈëÊý¾Ý¿â
package com.data;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.R ......
Òý×Ô:http://news.csdn.net/a/20090623/212109.html
¡¾CSDN6ÔÂ23ÈÕÏûÏ¢¡¿¸ù¾Ý¹úÍâýÌ屨µÀ£¬¿¨ÄÍ»ù÷¡´óѧ¼ÆËã»úϵµÄÑо¿ÈËÔ±ÈÕǰ¿ª·¢ÁËÁ½¿î¹¤¾ßÓÃÓÚ°ïÖú³ÌÐòÔ±´Ó³ÉǧÉÏÍòµÄJava APIÖÐÑ¡ÔñºÏÊʵÄAPI¡£
ÕâÁ½¿î¹¤¾ßµÄÃû×Ö·Ö±ðÊÇJadeiteºÍApatite¡£ËüÃÇÀûÓÃÁËÒÔÈËΪÖÐÐĵÄÉè¼Æ¼¼Êõ£¬´Ó¶ø´ó´óËõ¶ÌÁËËÑѰºÏÊʵÄÀ ......
JavaÓïÑÔ¶¨ÒåÁËpublic¡¢protected¡¢private¡¢abstract¡¢staticºÍfinalÕâ6ÖÖ³£ÓÃÐÞÊδÊÍ⻹¶¨ÒåÁË5¸ö²»Ì«³£ÓõÄÐÞÊδʣ¬ÏÂÃæÊǶÔÕâ11¸öJavaÐÞÊδʵĽéÉÜ£º
1.public
ʹÓöÔÏó£ºÀà¡¢½Ó¿Ú¡¢³ÉÔ±
½éÉÜ£ºÎÞÂÛËüËù´¦Ôڵİü¶¨ÒåÔÚÄÄ£¬¸ÃÀࣨ½Ó¿Ú¡¢³ÉÔ±£©¶¼ÊǿɷÃÎʵÄ
2.private
ʹÓöÔÏ󣺳ÉÔ±
½éÉÜ£º³ÉÔ ......