public class StringMethods {

public static void main(String[] args) {

//CREATING STRING

String s= "System Design";

String s1= "System design";

String s2= " Java ";

//charAt()

System.out.println(s.charAt(7)); //m

//compareTo()

System.out.println(s.compareTo(s1)); //-32

//concat()

System.out.println(s.concat(" Concept")); //System Design Concept

//contains()

System.out.println(s.contains("Des")); //true

//endsWith()

System.out.println(s.endsWith("s")); //false

//equals()

System.out.println(s.equals(s1)); //false

//equalsIgnoreCase()

System.out.println(s.equalsIgnoreCase(s1)); //true

//indexOf()

System.out.println(s.indexOf('t')); //3

//substring()

System.out.println(s.substring(3)); //tem Design

System.out.println(s.substring(4, 11)); //em Desi

//length()

System.out.println(s.length()); //13

//replace()

System.out.println(s.replace('e', 'o')); //Systom Dosign

//toLowerCase()

System.out.println(s.toLowerCase()); //system design

//toUpperCase()

System.out.println(s.toUpperCase()); //SYSTEM DESIGN

//trim()

System.out.println(s2);

System.out.println(s2.trim() + " language");

}

}