java - Insert multiple words to a String issue -

i want insert multiple words in string, offset relative original string:

stringbuffer sb = new stringbuffer("abcdefghijk"); sb.insert(3,"123"); sb.insert(5,"456"); system.out.println(sb);  

result:

abc124563defghijk 

i'd result is:

abc123de456fghijk 

how can do? suggestion.

reverse order of 2 inserts, , you'll expected result. more generally, start larger insertion indices , proceed smaller.

it worth noting stringbuilder should preferred stringbuffer.