In Java, there are two ways to concatenate two strings. You can use the concat method or the plus “+” character. Sun developers are using plus operator inside the body of concat method. concat method is used for achieving more readability.
The method return type is a String with the value of the String passed in to the method appended to the end of the String used to invoke this method.
Let us take an example to understand this method in deep :
Strings are easy to learn