StringBuffer

public class stringbuffersexp1 {


public static void main(String[] args) throws IOException {

StringBuffer sb=new StringBuffer();
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter surname:");
String sur=br.readLine();

System.out.println("Enter middle name:");
String midname=br.readLine();

System.out.println("Enter last name:");
String lastname=br.readLine();

sb.append(sur);
sb.append(midname);
System.out.println("name is:"+sb);

sb.append(lastname);
System.out.println("full name is:"+sb);

int n=sb.length();
System.out.println("Length of Full Name is:"+n);



}

}

Output:

Enter surname:

s

Enter middle name:

john

Enter last name:

henry

name is:sjohn

full name is:sjohnhenry

Length of Full Name is:10