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I am trying to use a similar method to C#'s string.SubString(int start, int length).
But the substring function in Java is string.substring(int start, int end).
I want to be able to pass a start position and a length to the substring function.
Can anyone help me to solve this issue?
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The substring begins with the character at the specified index and extends to the end of this string. substring(int beginIndex, int endIndex) : The substring begins at the specified beginIndex and extends to the character at index endIndex - 1. Thus the length of the substring is (endIndex - beginIndex).
To get first character from String in Java, use String. charAt() method. Call charAt() method on the string and pass zero 0 as argument. charAt(0) returns the first character from this string.
The difference between substring() and substr()The two parameters of substr() are start and length , while for substring() , they are start and end . substr() 's start index will wrap to the end of the string if it is negative, while substring() will clamp it to 0 .
Edit online. You can specify an asterisk as the second subscript value of the substring notation. This indicates that the length of the extracted string is equal to the length of the character string, less the number of characters before the starting character.
It could be something like
String mySubString(String myString, int start, int length) {
return myString.substring(start, Math.min(start + length, myString.length()));
}
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