String CONCATINATION EXAMPLE:

String concat() example
class demo
{
public static void main(String[] args){
String s1 = "spring ";
String s2 = s1 + "summer ";
s1.concat("fall ");
s2.concat(s1);
s1 += "winter ";
System.out.println(s1 + " " + s2);
}
};
Out put is spring winter spring summer

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