How to Java String subSequence in Go

The Java String subSequence function is used to extract a portion of a string and return it as a new string. It takes two parameters: the starting index and the ending index (exclusive) of the substring to be extracted. The function returns a CharSequence object, which can be cast to a String if needed. The subSequence function does not modify the original string, but instead creates a new string that contains the specified portion of the original string. This function is useful when you need to work with a specific part of a larger string, such as extracting a username from an email address. Keep reading below to learn how to Java String subSequence in Go.

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Java String subSequence in Go With Example Code

Java String subSequence is a method that returns a new character sequence that is a subsequence of the original sequence. In Go, we can achieve the same functionality using the `substring` method of the `strings` package.

To use the `substring` method, we first need to import the `strings` package:

import "strings"

Once we have imported the package, we can use the `substring` method to get a subsequence of a string. The method takes two arguments: the starting index and the ending index (exclusive) of the subsequence.

Here is an example of how to use the `substring` method:

package main


import (

    "fmt"

    "strings"

)
func main() {

    str := "Hello, world!"

    sub := str[7:12]

    fmt.Println(sub)

sub2 := strings.Substring(str, 7, 12) fmt.Println(sub2) }

In this example, we first create a string `str` with the value “Hello, world!”. We then use the `substring` method to get a subsequence of the string starting at index 7 and ending at index 12 (exclusive). The resulting subsequence is “world”.

We also show an alternative way to achieve the same result using the `Substring` method of the `strings` package.

Using the `substring` method in Go is a simple and effective way to get a subsequence of a string.

Equivalent of Java String subSequence in Go

In conclusion, the Go programming language provides a similar function to Java’s String subSequence method called Substring. This function allows developers to extract a portion of a string based on a starting and ending index. While the syntax and method names may differ between the two languages, the functionality remains the same. As a helpful assistant, I recommend that developers familiarize themselves with the Go Substring function to efficiently manipulate strings in their Go programs.