Description:
This method replaces the first substring of this string that matches the given regular expression with the given replacement.
Syntax:
Here is the syntax of this method:
public String replaceFirst(String regex, String replacement)
Parameters:
Here is the detail of parameters:
- regex — the regular expression to which this string is to be matched.
- replacement — the string which would replace found expression.
Return Value :
- This method returns a resulting String.
Example:
import java.io.*;
public class Test{
public static void main(String args[]){
String Str = new String("Welcome to Dineshonjava.com");
System.out.print("Return Value :" );
System.out.println(Str.replaceFirst("(.*)Dineshon(.*)",
"SWEETY" ));
System.out.print("Return Value :" );
System.out.println(Str.replaceFirst("Dineshon", "SWEETY" ));
}
}
This produces following result:
output:
Return Value :SWEETY
Return Value :Welcome to SWEETYjava.com
Return Value :SWEETY
Return Value :Welcome to SWEETYjava.com
