concat & trim

                                                          Concat & Trim 

1.        concat(): This method is used for conceiting two strings

String concat(String ob)

E.g.

                                    String s1="hello";

                                    String s2="world";

                                    String s3=s1.concat(s2);

                                    System.out.println(s3);

Output:

                                    helloworld

2.        trim(): This method is used to remove the leading as well as trailing spaces from the string .

String s="   hello    ";

System.out.println(s);

String s1=s.trim();

System.out.println(s1);

Output:

 hello   

hello