Java – How to combine two Strings, add Strings

Two Strings in java can combine together with simple adding of two strings with each. Concatenate String in java requires two string and put plus operator between it.

String string1="String one";
String string2="Merge with second string";

String combineString=string1 + string2;

System.out.println(combineString);

StringBuilder sb1 = new StringBuilder("String builder string 1 ");
StringBuilder sb2 = new StringBuilder("And string 2 ");

StringBuilder combineStringBuilder = sb1.append(sb2);
System.out.println(combineStringBuilder);