How to Java String substring in Kotlin

The Java String substring function is used to extract a portion of a string. It takes two parameters: the starting index and the ending index of the substring. The starting index is inclusive, meaning the character at that index is included in the substring, while the ending index is exclusive, meaning the character at that index is not included in the substring. If only the starting index is provided, the substring will include all characters from that index to the end of the string. The substring function returns a new string that contains the extracted portion of the original string. Keep reading below to learn how to Java String substring in Kotlin.

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Java String substring in Kotlin With Example Code

Java String substring is a commonly used method in Java programming. In Kotlin, the syntax for using substring is slightly different, but the functionality remains the same.

To use substring in Kotlin, you can call the `substring()` method on a string variable. This method takes two parameters: the starting index and the ending index of the substring you want to extract.

For example, if you have a string variable called `myString` and you want to extract a substring starting at index 2 and ending at index 5, you can use the following code:

val mySubstring = myString.substring(2, 5)

This will create a new string variable called `mySubstring` that contains the substring “str”.

It’s important to note that the starting index is inclusive and the ending index is exclusive. This means that the character at the starting index will be included in the substring, but the character at the ending index will not.

If you only provide one parameter to the `substring()` method, it will extract the substring starting at that index and continuing to the end of the string. For example:

val mySubstring = myString.substring(2)

This will create a new string variable called `mySubstring` that contains the substring “ring”.

In summary, using substring in Kotlin is similar to using it in Java. You can call the `substring()` method on a string variable and provide the starting and ending indices of the substring you want to extract.

Equivalent of Java String substring in Kotlin

In conclusion, Kotlin’s String class provides a powerful and efficient way to manipulate strings in your code. The substring function in Kotlin is equivalent to the one in Java, but with some added features that make it even more useful. With the ability to specify the starting and ending indices of the substring, as well as the option to use ranges, Kotlin’s substring function provides a flexible and intuitive way to extract substrings from a larger string. Whether you’re a seasoned Java developer or new to Kotlin, the substring function is a valuable tool to have in your programming arsenal.