Program
public class StringConcat
{
public static void main(String args[])
{
String s1 = "I am";
System.out.println(s1);
s1 = s1.concat(" a good boy");
System.out.println(s1);
}
}
Output
I am I am a good boy
Description
public String concat​(String str)
Concatenates the specified string to the end of this string.
If the length of the argument string is 0, then this String object is returned. Otherwise, a String object is returned that represents a character sequence that is the concatenation of the character sequence represented by this String object and the character sequence represented by the argument string.
Examples:
“cares”.concat(“s”) returns “caress”
“to”.concat(“get”).concat(“her”) returns “together”
Parameters:
str – the String that is concatenated to the end of this String.
Returns:
a string that represents the concatenation of this object’s characters followed by the string argument’s characters.
