Java³£ÓôúÂë
/**
* @author he
*
*
* °ÑDateת»»³ÉString£¬ÒÔyyyy-MM-dd HH:mm:ssµÄÐÎʽÏÔʾ
*/
public static String DateToString(Date tempDate) {
String date_str = "";
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // ¹æ¶¨ÈÕÆÚ¸ñʽ
try {
date_str = formatter.format(tempDate);
} catch (Exception ex) {
date_str = "";
}
return date_str;
}
/**
* @authorhe
*
*
* °ÑStringת»»³ÉDate£¬ÐÎʽΪyyyy-MM-dd HH:mm:ss
*/
public static Date StringToDate(String dateStr) {
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // ¹æ¶¨ÈÕÆÚ¸ñʽ
long long_temp = 0;
Date tempDate;
try {
long_temp = formatter.parse(dateStr).getTime();// ÏÈת»»³ÉlongÐÍ
tempDate = new Date(long_temp); // ÔÚת»»³ÉDateÐÍ
} catch (Exception ex) {
tempDate = null;
}
return tempDate;
}
Ïà¹ØÎĵµ£º
Javaѧϰ´ÓÈëÃŵ½¾«Í¨
Ò»¡¢ JDK (Java Development Kit)
JDKÊÇÕû¸öJavaµÄºËÐÄ£¬°üÀ¨ÁËJavaÔËÐл·¾³£¨Java Runtime Envirnment£©£¬Ò»¶ÑJava¹¤¾ßºÍJava»ù´¡µÄÀà¿â(rt.jar)¡£²»ÂÛʲôJavaÓ¦Ó÷þÎñÆ÷ʵÖʶ¼ÊÇÄÚÖÃÁËij¸ö°æ±¾µÄJDK¡£Òò´ËÕÆÎÕJDKÊÇѧºÃJavaµÄµÚÒ»²½¡£×îÖ÷Á÷µÄJ ......
1.ʵÏÖÎı¾ÔĶÁ
package AllAboutFile;
/**
*
* @author lucifer
*/
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class FileViewer extends Frame implements ActionListener{
String directory;
Text ......
»ñÈ¡classÀà·½·¨£º
1£¬getClass 2£¬Class.forName() 3,ÓÃ.class
public Field[] getDeclaredFields()
·µ»ØµÄÊÇij¸öÀàÀïµÄËùÓÐÀàÐ͵ıäÁ¿£¬²»°üÀ¨¼Ì³Ð¸¸ÀàµÄ
public Field[] getDeclaredFields(String name)
·µ»ØÌض¨Ãû×Ö
public Field[] getFields()
·µ»ØµÄÊÇij¸öÀàÀïµÄËùÓÐpublicÀàÐ͵ıäÁ¿£¬°üÀ¨¼Ì³Ð¸¸Àൠ......
Ìõ¼þ£ºÒѰ²×°J2SEºÍJ2EE¡£
Microsoft SQL Server 2000 Driver for JDBCÊÇ΢Èí¹«Ë¾Ãâ·ÑÌṩÃâ·ÑÏÂÔØµÄÒ»¸öÈí¼þ£¬Çë·ÃÎÊ£º http://www.microsoft.com/sql/default.asp£¬ÏÂÔØºóÎļþÃûΪ£ºsetup.exe£¬°²×°ºó£¬Ä¬ÈÏ·¾¶ÊÇ£º%Program Files%\Microsoft SQL Server 2000 Driver for JDBC£¬¸ÃĿ¼ÏÂLIBĿ¼ÀïÓÐ3¸öjarÎļþ¡£ ......
/**
*
* @param par
* ÈëÁ¦Ãû
* @return ÈëÁ¦値
*/
public static String inputfromConsole(String par) {
System.out.println(par);
InputStreamReader ......