Java »ù´¡Ìâ
ÔÚÍøÉÏÕÒÁ˵ã»ù´¡ÌâÄ¿,×Ô¼º×öÁË×ö,ÏÂÃæÊÇÌâÄ¿:
1.JavaÓÐÄÇЩ»ù±¾Êý¾ÝÀàÐÍ£¬StringÊDz»ÊÇ»ù±¾Êý¾ÝÀàÐÍ£¬ËûÃÇÓкÎÇø±ð¡£
2.×Ö·û´®µÄ²Ù×÷£º
дһ¸ö·½·¨£¬ÊµÏÖ×Ö·û´®µÄ·´×ª£¬È磺ÊäÈëabc£¬Êä³öcba
дһ¸ö·½·¨£¬ÊµÏÖ×Ö·û´®µÄÌæ»»£¬È磺ÊäÈëbbbwlirbbb£¬Êä³öbbbhhtccc¡£
3.Êý¾ÝÀàÐÍÖ®¼äµÄת»»
ÈçºÎ½«ÊýÖµÐÍ×Ö·ûת»»ÎªÊý×Ö£¨Integer£¬Double£©
ÈçºÎ½«Êý×Öת»»Îª×Ö·û
ÈçºÎȡСÊýµãǰÁ½Î»£¬²¢ËÄÉáÎåÈë¡£
4.ÈÕÆÚºÍʱ¼ä
ÈçºÎÈ¡µÃÄêÔÂÈÕ£¬Ð¡Ê±·ÖÃë
ÈçºÎÈ¡µÃ´Ó1970Äêµ½ÏÖÔڵĺÁÃëÊý
ÈçºÎ»ñȡij¸öÈÕÆÚÊǵ±ÔµÄ×îºóÒ»Ìì
ÈçºÎ¸ñʽ»¯ÈÕÆÚ
5.Êý×éºÍ¼¯ºÏ
6.ÎļþºÍĿ¼£¨I/O£©²Ù×÷
ÈçºÎÁгöij¸öĿ¼ÏµÄËùÓÐÎļþ
ÈçºÎÁгöij¸öĿ¼ÏµÄËùÓÐ×ÓĿ¼
ÅжÏÒ»¸öÎļþ»òĿ¼ÊÇ·ñ´æÔÚ
ÈçºÎ¶ÁдÎļþ
7.Java¶à̬µÄʵÏÖ£¨¼Ì³Ð¡¢ÖØÔØ¡¢¸²¸Ç£©
8.±àÂëת»»£¬ÔõÑùʵÏÖ½«GB2312±àÂëµÄ×Ö·û´®×ª»»ÎªISO-8859-1±àÂëµÄ×Ö·û´®¡£
9.JavaÖзÃÎÊÊý¾Ý¿âµÄ²½Ö裬StatementºÍPreparedStatementÖ®¼äµÄÇø±ð
2.
private String getString(String str) {
String reString="";
for (int i = str.length()-1; i >=0 ; i--) {
reString +=str.charAt(i);
}
return reString;
}
ʵÏÖ×Ö·û´®µÄÌæ»»£¬È磺ÊäÈëbbbwlirbbb£¬Êä³öbbbhhtccc ²»Ã÷°×ÌâÄ¿ÊÇʲôÒâ˼
3private void GetReplase() {
//·½·¨1 ÏȳËÒÔ100È»ºóËÄÉáÎåÈë,È»ºóÔÙ³ýÒÔ100
double a=3.1675;
int b=(int)Math.round(a*100);
double c=(double)b/100.00;
System.out.println(c);
//ʹÓøñʽ»¯
DecimalFormat dFormat=new DecimalFormat("#.00");
System.out.println(dFormat.format(a));
}
Ïà¹ØÎĵµ£º
Ò»¡¢µ÷ÓÃÊôÐÔÎļþÊôÐԵĴúÂ룺
String url=SmsProperties.get("sms_address_frontend");//È¡µØÖ·Èç“sms_address_frontend=http://172.16.1.9:8280/sms_frontend/services/smsSenderWebService”
String smsServer = SmsProperties.get("sms_server_name");//·¢ËͶÌÐŵķþÎñÕ˺Å(ÕâÀï¿ÉÒÔÈ¡ÖÐÎÄÊôÐ ......
public class ExcelUtil {
/*
* ¸ù¾ÝExcelÎļþ·¾¶ºÍ±íµ¥Ãû³Æ£¬Ò»´Î²éÕÒ´Ë±íµ¥µÄËùÓмǼ*/
public static String[][] getContentByName(String sourcePath,String sheetName){
String[][] strArray = null;
try {
InputStream is = new FileInputStream(sourcePath);
Workbook wb = Workbook.get ......
http://damies.javaeye.com/blog/51778
¹Ø¼ü×Ö: RMI
JAVA RMI ¿ìËÙÈëÃÅʵÀý
±¾ÊµÀýΪ²Î¿¼¶àƪÎÄÕÂд¾Í¶ø³É£¬ÍøÉϼ°ÊéÉϸ÷ÀàÎÄÕ½éÉÜÈçºÎʹÓÃRMIÓжàÖÖʵÀý¿É²Î¿¼£¬Æ©ÈçÓУº
1. ÓÃÃüÁîrmiregistryÆô¶¯RMI×¢²á·þÎñµÄ
2. ͬʱ´´½¨´æ¸ù(stub)ºÍ¹Ç¼Ü(skeleton)µÄ
3. Ö»´´½¨´æ¸ùÀàµÄµÄ(jdk1.2ÒÔºó°æ±¾)
4. ͨ¹ýRemoteRefº ......
ת×Ôhttp://www0.ccidnet.com/tech/guide/2001/10/08/58_3392.html
SAX¸ÅÄî
SAXÊÇSimple API for XMLµÄËõд£¬Ëü²¢²»ÊÇÓÉW3C¹Ù·½ËùÌá³öµÄ±ê×¼£¬¿ÉÒÔ˵ÊÇ“Ãñ¼ä”µÄÊÂʵ±ê×¼¡£Êµ¼ÊÉÏ£¬ËüÊÇÒ»ÖÖÉçÇøÐÔÖʵÄÌÖÂÛ²úÎï¡£ËäÈ»Èç´Ë£¬ÔÚXMLÖжÔSAXµÄÓ¦ÓÃË¿ºÁ²»±ÈDOMÉÙ£¬¼¸ºõËùÓеÄXML½âÎöÆ÷¶¼»áÖ§³ÖËü¡£
ÓëDOM±È½Ï¶øÑÔ ......
ÕâÀï×ܽáÒ»ÏÂXMLÎļþµÄ¶Áд¹ý³Ì£¬ÏÈ˵һÏÂдµÄ¹ý³Ì£¬ÕâÀïÎÒÓõÄÊÇXmlDocumentµÄwrite·½·¨ÊµÏֵģ¬Ð´µÄ¹ý³ÌÊDZȽϼòµ¥µÄ£¬Ö»ÐèÒª¶¨Òå×Ô¼ºÏëÒªµÄÔªËØ±äÁ¿£¬
Element user=null;
Element username=null,password=null;
È»ºó
// ¶¨Ò幤³§£¬Ê¹Ó¦ÓóÌÐòÄܹ»´Ó XML Î ......