ÕûÀíÓÃJavaʵÏÖÊý×Öת»¯³É×Ö·û´®×ó±ß×Ô¶¯²¹Áã·½·¨
Java ÖиøÊý×Ö×ó±ß²¹0 £¨1£©·½·¨Ò»
import java.text.NumberFormat; public class NumberFormatTest { public static void main(String[] args) {
//´ý²âÊÔÊý¾Ý
int i = 1;
//µÃµ½Ò»¸öNumberFormatµÄʵÀý
NumberFormat nf = NumberFormat.getInstance();
//ÉèÖÃÊÇ·ñʹÓ÷Ö×é
nf.setGroupingUsed(false);
//ÉèÖÃ×î´óÕûÊýλÊý
nf.setMaximumIntegerDigits(4);
//ÉèÖÃ×îСÕûÊýλÊý
nf.setMinimumIntegerDigits(4);
//Êä³ö²âÊÔÓï¾ä
System.out.println(nf.format(i));
}
} À´Ô´£ºhttp://blog.csdn.net/xiaohunzhang/archive/2008/08/07/2782592.aspx £¨2£©·½·¨¶þ£¨¸öÈËÒÔΪ¸Ã·½·¨¼òµ¥ÓÐЧ£¬µ«¾ÊÔÑéËÆºõString.format()º¯ÊýÓÐÎÊÌ⣩ public class TestStringFormat {
public static void main(String[] args) {
int youNumber = 1;
// 0 ´ú±íÇ°Ãæ²¹³ä0
// 4 ´ú±í³¤¶ÈΪ4
// d ´ú±í²ÎÊýΪÕýÊýÐÍ
String str = String.format("%04d", youNumber);
System.out.println(str); // 0001
}
}
À´Ô´£ºhttp://liuwei1981.javaeye.c
Ïà¹ØÎĵµ£º
±¾ÆªÖ¼ÔÚ°ïÖú×¼±¸Ñ§Ï°JavaÒÔ¼°¸Õ½Ó´¥JavaµÄÅóÓÑÈÏʶ¡¢ÕÆÎÕºÍʹÓÃstatic¡¢this¡¢super¡¢finalÕ⼸¸ö¹Ø¼ü×ÖµÄʹÓá£Java²©´ó¾«ÉÎÒÒ²ÊÇһλÕýÔÚѧϰºÍʹÓÃJavaµÄ°®ºÃÕߣ¬ÎÄÖÐÄÑÃâÓв»Í×Ö®´¦£¬»¶ÓÖ¸Õý¡£
Ò»¡¢static
¡¡ÇëÏÈ¿´ÏÂÃæÕâ¶Î³ÌÐò£º
public class Hello{
public static void main(String[] args){ ......
import java.net.URL;
import java.net.URLDecoder;
public class PathUtil
{
/**
* Get the env of windir, such as "C:\WINDOWS".
* @return the env of windir value.
*/
public static String getWindir(){
return System.getenv("windir");
}
......
package cn.ctgu.edu.ac;
import java.sql.*;
public class test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String url="jdbc:sqlserver://localhost:1433;Database=ÍøÉÏÊéµê¹ÜÀíϵͳ;integr ......
×òÌì²Å¿´µ½£¬µ«ÊÇÓöµ½Ò»Ð©ÎÊÌ⣬½ñÌì½â¾öÁË£¬¼ÇÏ¡¡£¨²Î¿¼£ºhttp://netbeans.org/kb/55/beginning-jni-part1.html£©
ÎÒÓõÄÊÇNetbeans 6.7£¬µ«ÊÇºÍÆäËûµÄÒ²Ó¦¸Ã´óͬСÒì°É¡£ »ù±¾Á÷³Ì£º JavaÕâ±ßµÄ£º
´´½¨javaÎļþ£¨´ønativeµÄ£©£¬»¹Òª¼ÇµÃÔÚÀàÖмÓÈ룺System.loadLibrary(xxx) ¡£
È»ºóÓÃjavahÀ´Éú³ÉC/ ......
JavaÊÂÎñAPI£¨JTA£»Java Transaction API£©ºÍËüµÄͬ°ûJavaÊÂÎñ·þÎñ(JTS£»Java TransactionService)£¬ÎªJ2EEƽ̨ÌṩÁË·Ö²¼Ê½ÊÂÎñ·þÎñ¡£Ò»¸ö·Ö²¼Ê½ÊÂÎñ£¨distributedtransaction£©°üÀ¨Ò»¸öÊÂÎñ¹ÜÀíÆ÷£¨transaction manager£©ºÍÒ»¸ö»ò¶à¸ö×ÊÔ´¹ÜÀíÆ÷(resource manager)¡£Ò»¸ö×ÊÔ´¹ÜÀíÆ÷£¨resource manager£©ÊÇÈÎÒâÀàÐ͵ ......