Join Two Strings In Java

import java.io.*;

public class CombinString{
    public static void main(String[] args) throws IOException{
        BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter First String:");
        String str1 = bf.readLine();
        System.out.println("Enter Second String:");
        String str2 = bf.readLine();
        System.out.println("Combin string example!");
        String com = str1.concat(str2);
        System.out.println("Combined string: " + com);
    }
}