public class demo2 else
//out:i love you!
//使用public int codepointat(int index)
for(int i = 0 ; i < str.length() ; i ++)
/*字母"i"的ascii碼是:73
字母" "的ascii碼是:32
字母"l"的ascii碼是:108
字母"o"的ascii碼是:111
字母"v"的ascii碼是:118
字母"e"的ascii碼是:101
字母" "的ascii碼是:32
字母"y"的ascii碼是:121
字母"o"的ascii碼是:111
字母"u"的ascii碼是:117
字母"!"的ascii碼是:33
*/system.out.println("字串" + "\"" + str + "\"" +
"的第乙個字母的assci碼是：" + str.codepointbefore(1) + " ");
//out:字串"i love you!"的第乙個字母的assci碼是：73
system.out.println("字串" + "\"" + str + "\"" + "的長度是:" +
str.codepointcount(0,str.length()));
//out:字串"i love you!"的長度是:11
system.out.println(new string("i love you,").concat("vividle!"));
//out:i love you,vividle!
//使用public int compareto(string anotherstring)
if(0 == new string("love").compareto("love"))else
//out:the two string isn't the same.
if(0 == new string("love").comparetoignorecase("love"))else
//out:if we ignore case ,the two string is the same.
//使用public boolean matches(string regex)
system.out.println(new string("match").matches("match"));//out:true
system.out.println(new string("matche").regionmatches(0,"match",0,6));//out:false
system.out.println(new string("match").regionmatches(true,0,"match",0,5));//out:true
//使用public int offsetbycodepoints(int index, int codepointoffset)
string abcdef = new string(new char);
int index = abcdef.offsetbycodepoints(abcdef.length(),-3);
system.out.println(index);//out:3
int cp = abcdef.codepointat(index);
system.out.println(cp);//out:100
//使用 public void getchars(int srcbegin, int srcend, char dst, int dstbegin)
char chget = new char[11];
str.getchars(0, 11, chget, 0);
system.out.println(chget);//out:i love you!
//使用ublic boolean contentequals(stringbuffer sb)
system.out.println(str.contentequals(new stringbuffer("i don't love you!")));//out:false
//使用public boolean startswith(string prefix, int toffset)
system.out.println(str.startswith("i",0));//out:true
system.out.println(str.hashcode());//out:-1503998791
// public int indexof(string str, int fromindex)
system.out.println(str.indexof("l",0));//out:2
// public charsequence subsequence(int beginindex, int endindex)
system.out.println(str.subsequence(0,11).tostring());//out:i love you!
//public string replace(char oldchar, char newchar)
system.out.println(str.replace(' ','*'));//out:i*love*you!
//public string replacefirst(string regex, string replacement)
system.out.println(str.replacefirst(" ","*"));//out:i*love you!
// public string replaceall(string regex, string replacement)
system.out.println(str.replaceall(" ","*"));//out:i*love*you!
//public string split(string regex, int limit)
string strarray = new string{};
strarray = str.split(" ",0);
for(string x :strarray)
/** i
love
you! */ }
}
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