public class Demo4 {

public static void main(String[] args) {

String a = "Hello";

System.out.println(a.length());

System.out.println(a.toUpperCase());

System.out.println(a.toLowerCase());

System.out.println(a);

a = a.toUpperCase();

System.out.println(a);

char r[] = a.toCharArray();

System.out.println(a.indexOf("L")); // First Occurance

System.out.println(a.lastIndexOf("L")); // Last Occurance

System.out.println(a.replace('L', 'K'));

String b = " Amit Srivastava ";

System.out.println("["+b+"]");

System.out.println("["+b.trim()+"]");

String address="A-21, Shakti Nagar, Delhi-7";

String array[] = address.split(",");

System.out.println("Array is "+array.length);

for(String z : array){

System.out.println(z);

}

}

}