![]() If you want to replace a substring with a string with different length, you might have a look at the gsub() function. C 2 phng thc ly chui con t mt chui cho: public String substring (int startIndex): Phng thc ny tr v i tng chui mi l chui con ca chui cho tnh t startIndex nhp n cui cng. If either or both of the arguments are negative or NaN, the substring () method treats them as if they were 0. ![]() The slice () method returns an empty string if this is the case. Ni cch khc, chui con l mt tp hp con ca mt chui khc. The substring () method swaps its two arguments if indexStart is greater than inde圎nd, meaning that a string is still returned. You may want to retrieve a particular part of a string in a Java program. The original string on which substring () is applied is left unchanged. This method accepts the start and end index values of the characters you would like to retrieve from a string. The replacement needs to have the same number of characters as the replaced part of your data. Substring trong java Mt phn ca chui c gi l chui con (substring). The Java substring () method returns a portion of a particular string. The first is inclusive and the second is exclusive. Important Note for using substr() or substring() for string replacement: String strOut 'abcdefghijklmnopqrtuvwxyz' String result strOut.substring(0, 8) + '.' // count start in 0 and 8 is excluded (result) Note: substring(int first, int second) takes two parameters. Someone mention use of negative index/zero.īoth are accepted by substr() and substring(). ![]() the stopping point 1) while substring function will extract several possible strings.
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