Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

(ZZ)JAVA Properties

Ö÷ÒªÊÇÀûÓÃJavaÌṩµÄutil°üÖеÄPropertiesÀà¡£·Ï»°²»¶à˵£¬Ö±½Ó¿´´úÂ룺
view plaincopy to clipboardprint?
import java.util.*;
public class YourJavaProperties {
 public static void main(String args[]){
 Properties props=System.getProperties();
 System.out.println("JavaµÄÔËÐл·¾³°æ±¾£º"+props.getProperty("java.version"));
 System.out.println("JavaµÄÔËÐл·¾³¹©Ó¦ÉÌ£º"+props.getProperty("java.vendor"));
 System.out.println("Java¹©Ó¦É̵ÄURL£º"+props.getProperty("java.vendor.url"));
 System.out.println("JavaµÄ°²×°Â·¾¶£º"+props.getProperty("java.home"));
 System.out.println("JavaµÄÐéÄâ»ú¹æ·¶°æ±¾£º"+props.getProperty("java.vm.specification.version"));
 System.out.println("JavaµÄÐéÄâ»ú¹æ·¶¹©Ó¦ÉÌ£º"+props.getProperty("java.vm.specification.vendor"));
 System.out.println("JavaµÄÐéÄâ»ú¹æ·¶Ãû³Æ£º"+props.getProperty("java.vm.specification.name"));
 System.out.println("JavaµÄÐéÄâ»úʵÏÖ°æ±¾£º"+props.getProperty("java.vm.version"));
 System.out.println("JavaµÄÐéÄâ»úʵÏÖ¹©Ó¦ÉÌ£º"+props.getProperty("java.vm.vendor"));
 System.out.println("JavaµÄÐéÄâ»úʵÏÖÃû³Æ£º"+props.getProperty("java.vm.name"));
 System.out.println("JavaÔËÐÐʱ»·¾³¹æ·¶°æ±¾£º"+props.getProperty("java.specification.version"));
 System.out.println("JavaÔËÐÐʱ»·¾³¹æ·¶¹©Ó¦ÉÌ£º"+props.getProperty("java.specification.vender"));
 System.out.println("JavaÔËÐÐʱ»·¾³¹æ·¶Ãû³Æ£º"+props.getProperty("java.specification.name"));
 System.out.println("JavaµÄÀà¸ñʽ°æ±¾ºÅ£º"+props.getProperty("java.class.version"));
 System.out.println("JavaµÄÀà·¾¶£º"+props.getProperty("java.class.path"));
 System.out.println("¼ÓÔØ¿âʱËÑË÷µÄ·¾¶Áб


Ïà¹ØÎĵµ£º

java µ÷ÓÃmysql¿Í»§¶Ëµ¼È룬µ¼³öÊý¾Ý

 ×î½üÓöµ½Ò»¸öÐèÇóÒªÔÚlinuxÏÂÓÃjava µ÷ÓÃmysql¿Í»§¶ËÔ¶³ÌµÇ½mysql·þÎñÆ÷£¬´Ó¿Í»§¶Ë»úÆ÷µ¼Èëmysql½Å±¾£¬´Ómysql·þÎñÆ÷¶Ëµ¼³ö±íÖеÄÊý¾Ý¡£ÒÔÏÂÊÇÓõ½µÄÖ÷Òª·½·¨£º
Java ´úÂë 
/**  
 * µ¼ÈëÊý¾Ý  
  * @param  ½Å±¾µÄµØÖ·ºÍÃû³Æ  
 * @return ÊÇ·ñ³ ......

Java֮staticѧϰ

¶ÔÓÚѧϰstaticÎÒÃÇÏÈÀ´¿´Á½¸öÀý×Ó£º
//Example 1 Tst.java£¬no main() method
package com.blogchina.qb2049;
public class Tst
{
static { System.out.println("111111"); }
}
ÔËÐнá¹ûΪ: 111111
Exception in thread "main" java.lang.NoSuchMethodError: main
ͬÑùµÄµÀÀí¿´µÚ¶þ ......

JavaÐéÄâ»ú¼¸¸öÃüÁîÐвÎÊý˵Ã÷

Ò»¡¢ÔËÐÐclassÎļþ
Ö´Ðдømain·½·¨µÄclassÎļþ£¬ÃüÁîÐÐΪ£º
java <CLASSÎļþÃû>
×¢Ò⣺CLASSÎļþÃû²»Òª´øÎļþºó׺.class
ÀýÈ磺
java Test
Èç¹ûÖ´ÐеÄclassÎļþÊÇ´ø°üµÄ£¬¼´ÔÚÀàÎļþÖÐʹÓÃÁË£º
package <°üÃû>
ÄÇÓ¦¸ÃÔÚ°üµÄ»ù·¾¶ÏÂÖ´ÐУ¬ÃüÁîÐÐΪ£º
java <°üÃû>.CLASSÎļþ ......

Serializable javaÐòÁл¯

Bean Serializable Interface µÄ½Ó¿ÚÈÃBEAN¿ÉÒÔ´®Ðл¯£¬½«Æä±ä³ÉÒ»¸ö¿É±£´æÎªÒÔºóʹÓõĶþ½øÖÆÁ÷¡£µ±Ò»¸öBEAN±»ÏµÁл¯µ½´ÅÅÌÉÏ»òÕ߯äËûÈκεط½£¬Æä״̬±»±£´æÆðÀ´£¬ÆäÖеÄÊôÐÔÖµÒ²²»»á¸Ä±ä¡£ÔÚBEANµÄ¹æ·¶ÖУ¬JSP²¢Ã»ÓÐÒªÇóBEANʵÏÖSerializable½Ó¿Ú¡£µ«ÊÇ£¬Èç¹ûÄúÏ£Íû×Ô¼º¿ØÖÆÄúËù´´½¨µÄ×é¼þµÄserialization½ø³Ì£¬»òÕßÄúÏë ......

Java±à³ÌÄÇЩʶù2_·½·¨

Java±à³ÌÄÇЩʶù52—·½·¨ÉùÃ÷
µÚÆßÕÂ ·½·¨
·½·¨µÄÀ´Ô´
·½·¨µÄ¸ÅÄîÀ´Ô´ÓÚÊýѧÉϵĺ¯Êý£¬ÔÚÊýѧÖУ¬µ±Êý¾Ý¾ßÓÐÒ»¶¨µÄ¹æÂÉʱ£¬¾ÍÊÇÓÃÒ»¸öº¯ÊýÀ´´úÂë¸ÃÊý×ֵĹæÂÉ£¬ÀýÈçf£¨n£©=nÔò´ú±í1¡¢2¡¢3¡¢……ÕâÑùµÄÒ»¸öÊýÁС£ÔÚÊýѧÉÏnÊDzÎÊý£¬¶ÔÓÚÈ·¶¨µÄnÖµÖ»ÓÐÒ»¸öf£¨n£©µÄÖµºÍËü¶ÔÓ¦
·½·¨ÊÇÒ»×éΪÁËʵÏÖÌØ¶¨¹¦Ä ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ