Scala String replaceFirst() method with example

The replaceFirst() method is same as replaceAll but here only the first appearance of the stated sub-string will be replaced.

Method Definition: String replaceFirst(String regex, String replacement) Return Type: It returns the stated string after replacing the first appearance of stated regular expression with the string we provide.

Example #1:

Scala

// Scala program of replaceFirst()
// method

// Creating object
object GfG
{ 

    // Main method
    def main(args:Array[String])
    {
    
        // Applying replaceFirst method
        val result = "csoNidhimsoSingh".replaceFirst(".so", "##")
        
        // Displays output
        println(result)
    
    }
}

Output:

##NidhimsoSingh

Example #2:

Scala

// Scala program of replaceFirst()
// method

// Creating object
object GfG
{ 

    // Main method
    def main(args:Array[String])
    {
    
        // Applying replaceFirst method
        val result = "NidhimsoSinghcso".replaceFirst(".so", "*")
        
        // Displays output
        println(result)
    
    }
}

Output:

Nidhi*Singhcso

Example #3:

Scala

// Scala program of replaceFirst()
// method

// Creating object
object GfG
{ 

    // Main method
    def main(args:Array[String])
    {
    
        // Applying replaceFirst method
        val result = "fsoNidhimsoSinghcso".replaceFirst(".so", "*")
        
        // Displays output
        println(result)
    
    }
}

Output:

*NidhimsoSinghcso

Scala String replaceFirst() method with example

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