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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«¾ÊÔÑéËƺõString.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
}
}
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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");
}
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MailSenderInfo .java :
package com.util.mail;
import java.util.Properties;
/**
* @author AllanKing
* @date 2009-11-12
*/
public class MailSenderInfo {
// ·¢ËÍÓʼþµÄ·þÎñÆ÷µÄIPºÍ¶Ë¿Ú
private String mailServerHost;
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# ÎļþÃû: printargs.py
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import sys
print sys.argv
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