String
**String Length**
len(str) method returns the number of bytes contained in the string literal.
```go
var greeting = "Hello world!"
fmt.Printf("String Length is: ")
fmt.Println(len(greeting))
```
**Concatenating Strings**
The strings package includes a method join for concatenating multiple strings −
```go
import ("fmt", "strings")
func main() {
greetings := []string{"Hello","world!"}
fmt.Println(strings.Join(greetings, " "))
}
```