java ³ÌÐòÌâ
//1.±àдһ¸ö³ÌÐò£¬¸Ã³ÌÐò¿É¶ÁÈëÒ»¸öÍⲿÎļþ£¬²¢½«ÎļþÄÚÈݸ³Öµ¸øÒ»¸ö×Ö·û´®
package Zhangyiwei
import java.io.*;
public class Zhangyiwei {
public static String filename = "c:\\1.txt";
public static void main(String[] args) throws FileNotFoundException, IOException {
System.out.println("File:"+File2String(filename));
}
/**
* º¯Êý£ºFile2String
* ¹¦ÄÜ£º¿É¶ÁÈëÒ»¸öÍⲿÎļþ£¬²¢½«ÎļþÄÚÈݸ³Öµ¸øÒ»¸ö×Ö·û´®
* @param file Îļþ·¾¶
* @return ×Ö·û´®ÄÚÈÝ
* @since 1.0
*/
public static String File2String(String filename) throws FileNotFoundException, IOException{
char[] context = new char[(int)new File(filename).length()];
FileReader filereader = new FileReader(filename);
filereader.read(context);
filereader.close();
return new String(context);
}
}
//2.±àдһ¸ö³ÌÐò£¬¸Ã³ÌÐò¿É½«Ò»¸ö×Ö·û´®Ð´ÈëÍⲿÎļþ
package Zhangyiwei;
import java.io.*;
public class Zhangyiwei {
public static String filename = "c:\\1.txt";
public static String context = "This is a file made by java.";
public static void main(String[] args) throws IOException {
String2File(filename,context,false);
}
/**
* º¯Êý£ºString2File
* ¹¦ÄÜ£º½«×Ö·û´®ÄÚÈݸ³Öµ¸øÒ»¸öÍⲿÎļþ
* @param filename Îļþ·¾¶
* @param context ×Ö·û´®ÄÚÈÝ
* @
Ïà¹ØÎĵµ£º
ÔÚ±à³ÌµÄʱºò£¬¾³£Óöµ½ÒªÅжÏÒ»¸ö×Ö·û´®ÖеÄ×Ö·ûÊÇ·ñÊÇÊý×Ö(0-9)
ÏÂÃæÎÒ¸ø´ó¼Ò½éÉܼ¸ÖÖʵÏÖ·½·¨
1.ʹÓÃCharacter.isDigit(char)ÅжÏ
String str = "123abc";
if (!"".equals(str)) {
char num[] = str.toCharArray();//°Ñ×Ö·û´®×ª»»Îª×Ö·ûÊý×é
StringBuffer title = new StringBuffer();//ʹÓÃS ......
Ä¿±ê£ºÊµÏÖÒ»¸öºº×Ö×Ö·û´®°´ººÓïÆ´Òô×Öµä˳ÐòÅÅÐò¡£
ÔÀí£ºÔÚwindows»·¾³µÄgbk×Ö·û¼¯Àºº×ÖÊǰ´ººÓïÆ´Òô×Öµä˳Ðò±àÂëµÄ£¬Èç“´¡”ÊÇB4A1£¬“´¢”ÊÇB4A2¡£ÕâÀïÓиöÎÊÌâ¾ÍÏñÉÏÃæµÄ´¢ºÍ´¡ÕâÑùµÄͬÒô×ÖÖ»ÄÜ×ñÕÕ±àÂëµÄ˳ÐòÁË£¬ÁíÍâ¶àÒô×ÖÒ²µÃ×ñÕÕ±àÂë˳Ðò¡£Éè¼ÆË¼Â·ÊÇÏȲð·Öºº×Ö×Ö·û´®Îª×Ö·ûÊý×飬»ñµÃÿ ......
Èý¸öѧÉúµ½Ò»¸öË®ÁúÍ·ÏÂÅŶÓȡˮ£¬ÈýÈ˶¼È¡ÍêË®ºóÒ»ÆðÀ뿪¡£
ÕâÀïÉæ¼°µ½ÈçºÎÅжÏÈý¸öÈ˶¼È¡ÍêË®¡£Èç¹ûÓÃÆÕͨµÄ¾²Ì¬³ÉÔ±£¬ÊƱػáÒªÓÃÎÞÏÞÑ»·À´µÈ´ý¡£¸üºÃµÄ°ì·¨ÊÇÓà wait-notify »úÖÆ¡£Ç°Á½¸öѧÉúÈ¡ÍêË®ºó¶¼ wait£¬×îºóÒ»¸öѧÉúÈ¡ÍêË®ºó notify£¬ÕâÑù¾ÍÄÜÒ»ÆðÀ뿪ÁË¡£ÏÂÃæÊÇ´úÂëʾÀý£º
/**
* Èý¸öѧÉúÅŶÓȡˮ£¬È¡ÍêºóÒ ......
fm.split("["); // error
-------------------
java.util.regex.PatternSyntaxException: Unclosed character class near index 0[+
^
at java.util.regex.Pattern.error(Unknown Source)
at java.util.regex.Pattern.clazz(Unknown Source)
& ......
¶ÔÓÚ³õѧÕߣ¬Ò²Ðдó¼Ò»áÈÏΪJava°üº¬JavaScript£¬È»¶øÕâÖÖ´Ó×ÖÃæÒâ˼µÄÀí½âÊÇ´íÎóµÄ£¬ÏÂÃæÐ¡±àdz̸һÏÂJavaScriptÓëjavaµÄÇø±ð¡£
1. »ùÓÚ¶ÔÏóºÍÃæÏò¶ÔÏó
JavaÊÇÒ»ÖÖÕæÕýµÄÃæÏò¶ÔÏóµÄÓïÑÔ£¬¼´Ê¹ÊÇ¿ª·¢¼òµ¥µÄ³ÌÐò£¬±ØÐëÉè¼Æ¶ÔÏó¡£
JavaScriptÊÇÖֽű¾ÓïÑÔ£¬Ëü¿ÉÒÔÓÃÀ´ÖÆ×÷ÓëÍøÂçÎ޹صģ¬ÓëÓû§½»»¥×÷Óõĸ´ÔÓÈí¼þ¡£ ......