Expected ';'delimiter in connection substring'{ 0 }'after value'{ 1 } '.
在连接子字符串 “ {0}”中的值 “ {1}”后需要 “; ”分隔符.
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Returns the index of the first character of a specified substring in a string.
返回指定子串首字符在串中的索引.
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The following code example uses regular expressions to look for exact substring matches.
下面的代码示例使用正则表达式查找完全匹配的子字符串.
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Extracts a substring that contains only the characters not in a set.
功能:从字符串位置0开始查找,提取首次仅仅出现在匹配字符表里的连续的子字符串.
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The substring starts at a specified character position and has a specified length.
子字符串从指定的字符位置开始且具有指定的长度.
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substring()在Java语言中是通过创建一个共享原始字符数组的新String而实现的。
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