Java String concatenate

Introduction

We can concatenate two strings using concat(), shown here:

String concat(String str) 

concat() performs the same function as +. For example,

String s1 = "one";  
String s2 = s1.concat(" two"); 

puts the string "one two" into s2.

It generates the same result as the following sequence:

String s1 = "one";  
String s2 = s1 + "two"; 



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