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1)substring()
ËüÓÐÁ½ÖÖÐÎʽ£¬µÚÒ»ÖÖÊÇ£ºString substring(int startIndex)
µÚ¶þÖÖÊÇ£ºString substring(int startIndex,int endIndex)
2)concat() Á¬½ÓÁ½¸ö×Ö·û´®
Àý:String s="Welcome to ";
    String t=s.concat("AnHui");
3)replace() Ìæ»»
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String replace(char original,char replacement)
ÀýÈ磺String s=”Hello”.replace(’l',’w');
µÚ¶þÖÖÐÎʽÊÇÓÃÒ»¸ö×Ö·ûÐòÁÐÌæ»»ÁíÒ»¸ö×Ö·ûÐòÁУ¬ÐÎʽÈçÏ£º
String replace(CharSequence original,CharSequence replacement)
4)trim() È¥µôÆðʼºÍ½áβµÄ¿Õ¸ñ
5)valueOf() ת»»Îª×Ö·û´®
6)toLowerCase() ת»»ÎªÐ¡Ð´
7)toUpperCase() ת»»Îª´óд
8)length() È¡µÃ×Ö·û´®µÄ³¤¶È
Àý£ºchar chars[]={’a',’b’.’c'};
String s=new String(chars);
int len=s.length();
9)charAt() ½ØÈ¡Ò»¸ö×Ö·û
Àý£ºchar ch;
      ch=”abc”.charAt(1);
       ·µ»ØÖµÎª’b’
10)getChars() ½ØÈ¡¶à¸ö×Ö·û
void getChars(int sourceStart,int sourceEnd,char target[],int targetStart)
sourceStart Ö¸¶¨ÁË×Ó´®¿ªÊ¼×Ö·ûµÄϱê
sourceEnd Ö¸¶¨ÁË×Ó´®½áÊøºóµÄÏÂÒ»¸ö×Ö·ûµÄϱꡣÒò´Ë£¬×Ó´®°üº¬´ÓsourceStartµ½sourceEnd-1µÄ×Ö·û¡£
target Ö¸¶¨½ÓÊÕ×Ö·ûµÄÊý×é
targetStart targetÖпªÊ¼¸´ÖÆ×Ó´®µÄϱêÖµ
Àý£ºString s=”this is a demo of the getChars method.”;
char buf[]=new char[20];
s.getChars(10,14,buf,0);
11)getBytes()
Ìæ´úgetChars()µÄÒ»ÖÖ·½·¨Êǽ«×Ö·û´æ´¢ÔÚ×Ö½ÚÊý×éÖУ¬¸Ã·½·¨¼´getBytes()
Àý£º
String s = “Hello!ÄãºÃ£¡”;
byte[] bytes = s.getBytes();
12)toCharArray()
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String s = “Hello!ÄãºÃ£¡”;
char[] ss = s.toCharArray();
13)equals()ºÍequalsIgnoreCase() ±È½ÏÁ½¸ö×Ö·û´®
14)regionMatches() ÓÃÓÚ±


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Core Java ±Ê¼Ç

Chapter 01  
Getting Started
 
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