If you have multiple strings, you can use StringJoiner to join them efficiently.

import java.util.StringJoiner;public class UsingStringJoiner{   public static void main(String args[])   {      UsingStringJoiner usingStringJoiner = new UsingStringJoiner();      usingStringJoiner.proceed();   }      private void proceed()   {      StringJoiner stringArr = new StringJoiner(",", "{", "}");         //Here comma (,) is the delimiter and {} are the start and end suffix                  stringArr.add("Sun Microsystems");          stringArr.add("Oracle");          stringArr.add("Database company");          stringArr.add("Software and Hardware");                            System.out.println(stringArr);           }}/*Expected output:[root@mypc]# java UsingStringJoiner{Sun Microsystems,Oracle,Database company,Software and Hardware}*/