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The substring of other to be compared begins at index ooffset and has length len. The substring of this String object to be compared begins at index toffset and has length len. The result is true if these substrings represent identical character sequences. Do not forget that the starting index of is at position ' 0'.įor example, consider the case where you want the sub-string "ghijk" from "abcdefghijklmnopqrstuvwxyz".ĭKString fullString = "abcdefghijklmnopqrstuvwxyz" ĭKString subString = fullString. substring() extracts characters from indexStart up to but not including inde圎nd.In particular: If inde圎nd is omitted, substring() extracts characters to the end of the string. A substring of this String object is compared to a substring of the argument other. The Java (int beginIndex int endIndex ) method's second parameter specifies the ending index into the string, not the number of characters extending from the beginning index. Do not forget that the starting index of DKString is at position ' 1'. Unlike the Java String class, the second argument in DKString::subString(int,int) is the total number of characters to include after the index specified as the first parameter. If you perceive strange behavior when using the DKString::substring(int,int) method, where more or less characters actually appear in the intended result, you are probably using the parameter arguments incorrectly.īe sure that you are using the correct second argument for the DKString::subString(int beginIndex, int numCharacters ) method. The DKString::subString(int,int) method's arguments have different meanings than those of the Java™ (int,int) method arguments.