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

javaϵͳ¼à¿ØCPU ´ÅÅÌ


import java.io.*;   
  
/**
* linux ÏÂcpu ÄÚ´æ ´ÅÅÌ jvmµÄʹÓÃ¼à¿Ø
* @author avery_leo
*
*/  
public class TT {   
    /**
      * »ñÈ¡cpuʹÓÃÇé¿ö
      * @return
      * @throws Exception
      */  
    public double getCpuUsage() throws Exception {   
        double cpuUsed = 0;   
  
         Runtime rt = Runtime.getRuntime();   
         Process p = rt.exec("top -b -n 1");// µ÷ÓÃϵͳµÄ“top"ÃüÁî   
       
  
         BufferedReader in = null;   
        try {   
             in = new BufferedReader(new InputStreamReader(p.getInputStream()));   
             String str = null;   
             String[] strArray = null;   
           
            while ((str = in.readLine()) != null) {   
                int m = 0;   
                   
                if (str.indexOf(" R ") != -1) {// Ö»·ÖÎöÕýÔÚÔËÐеĽø³Ì£¬top½ø³Ì±¾Éí³ýÍâ &&am


Ïà¹ØÎĵµ£º

ÈçºÎÒÔJavaʵÏÖÍøÒ³½ØÍ¼¼¼Êõ

½ñÌì¿´µ½Ä³ÍøÓѹØÓÚ“ÈçºÎÒÔJavaʵÏÖÍøÒ³½ØÍ¼¼¼Êõ”µÄ×ÉѯÌû£¬ÓÉÓÚ³öÏÖ¸Ã×ÉѯµÄµØµã·Ç³£²»ÊʺϽϳ¤»Ø¸´£¬¹ÊÒÔ²©ÎÄÐÎʽ»Ø´ð¡£
ÊÂʵÉÏ£¬Èç¹ûÄúÏëÒÔJavaʵÏÖÍøÒ³½ØÍ¼£¬Ò²¾ÍÊÇ“ÊäÈëÒ»¶ÎÍøÖ·£¬¼¸ÃëÖÓ¹ýºó¾ÍÄܽØÈ¡Ò»ÕÅÍøÒ³ËõÂÔͼ”µÄЧ¹û¡£ÄÇô£¬ÄúÖÁÉÙÓÐ3ÖÖ·½Ê½¿ÉÒÔÑ¡Ôñ¡£
1¡¢×îÖ±½ÓµÄ·½Ê½—— ......

JAVA²Ù×÷XMLµÄÍêÕûÀý×Ó——W3C DOMƪ

ÕâÊÇÒ»¸öÓÃJAVA W3C DOM ½øÐÐXML²Ù×÷µÄÀý×Ó£¬°üº¬Á˲éѯ¡¢Ôö¼Ó¡¢Ð޸ġ¢É¾³ý¡¢±£´æµÄ»ù±¾²Ù×÷¡£½ÏÍêÕûµÄÃèÊöÁËÒ»¸öXMLµÄÕû¸ö²Ù×÷Á÷³Ì¡£ÊʺϸÕÈëÃÅJAVA XML²Ù×÷µÄÅóÓѲο¼ºÍѧϰ¡£
¼ÙÉèÓÐXMLÎļþ£ºtest1.xml
<?xml version="1.0" encoding="UTF-8"?>
<books>
 <book>
  <name>¹þÀï²¨Ì ......

Java:Eclipse´úÂë×Ô¶¯Ìáʾ


EclipseÖÐĬÈÏÊÇÊäÈë"."ºó³öÏÖ×Ô¶¯Ìáʾ£¬ÓÃÓÚÀà³ÉÔ±µÄ×Ô¶¯Ìáʾ£¬¿ÉÊÇÓÐʱºòÎÒÃÇÏ£ÍûËüÄÜÔÚÎÒÃÇÊäÈëÀàµÄÊ××Öĸºó¾Í³öÏÖ×Ô¶¯Ìáʾ£¬¿ÉÒÔ½ÚÊ¡´óÁ¿µÄÊäÈëʱ¼ä£¨ËäÈ»°´alt + /»á³öÏÖÌáʾ£¬µ«»¹ÊÇÒª¶à°´Ò»´Î°´¼ü£¬Ì«Âé·³ÁË£©¡£
    ´ÓWindow -> preferences -> Java -> Editor -> Content assist - ......

JAVA¹æÔò ¿ª·¢Æª

±¾ÎĽéÉܵÄJAVA¹æÔòµÄ˵Ã÷·ÖΪ3¸öÖ÷Òª¼¶±ð£¬±¾ÆªÅׯúÁËÆ½Ê±¿ª·¢ÖкÜÉÙÓöµ½µÄÇé¿ö£¬ÄÇЩÓõñȽÏÉÙµÄÒÔºóÔٸ߼¶ÆªÀïÃæ³öÏÖ¡£²¢ÓÐÁù¸öÓÐÓõĹú¼ÊÈí¼þ¿ª·¢ÖØÒª×¢ÒâµÄÓйØStringµÄÎÊÌ⣬×ñÊØÁËÕâЩ¹æÔò¿ÉÒÔÌá¸ß³ÌÐòµÄЧÂÊ¡¢Ê¹´úÂëÓÖ¸üºÃµÄ¿É¶ÁÐԵȡ£
£¨1£© Èç¹ûÓÐJDBCÁ¬½ÓûÓйصôµÄ»°£¬ÐèÒªÔÚ"finally"·½·¨Öйصô
Èç ......

ÈÃÎÒÒ»¼ûÖÓÇéµÄjava web mvc ¿ò¼Ü£ºVraptor3

ǰ¶Îʱ¼ä¹«Ë¾¿ªÊ¼ÓÃSSH¿ò¼Ü£¬ÒòΪÒÔǰûÓÐÓùý£¬Ï¸ö¼¸¸ödemo¿´¿´£¬·¢ÏÖÏëÀí½âStructs2µÄÁ÷³ÌÕæÊÇÀ§ÄÑ£»ºóÀ´ÓÖÏëÕûºÏExt½øÐнçÃæ¿ª·¢£¬ÉÏÍøÕÒ×ÊÁÏ£¬·¢ÏÖÓÃStructsÕûºÏAjax»¹ÕæÊÇÂé·³£¬²»½öǰ̨Ҫ×öÐ޸ģ¬ºǫ́»¹Òª¸ÄÅäÖÃÎļþÒÔ¼°actionÀà£¬Õæ²»ÖªµÀÕâÑùµÄ¶«Î÷×öÍêÁ˸ÃÔõôÑùȥά»¤£¡¼ÌÐøÔÚÍøÉÏÕÒÖÕÓÚ±»ÎÒ·¢ÏÖÁËVraptor£¬¸Ã¿ò ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ