Small Simple code to cover all String built in functions in java

Program:

import java.util.*;
class str1
{
    public static void main(String args[])
    {
        String s1 = "Bhagirath";
        System.out.println("S1 = " + s1);
        int length = s1.length();

        System.out.println("S1 lenth = " + length);
        System.out.println("S1 lowercase = " + s1.toLowerCase());
        System.out.println("S1 uppercase = " + s1.toUpperCase());
        System.out.println("S1 replace a with z = " + s1.replace('a','z'));
        System.out.println("S1 indexOf('e')= " + s1.indexOf('e'));
        System.out.println("S1 lastindexof('e') = " + s1.lastIndexOf('e'));
        String s2 = "ViewSonic";
        System.out.println("S2 = " + s2);
        System.out.println("S1 and S2 trim = " + s1.trim() + s2.trim());
        System.out.println("S1 and S2 equals = " + s1.equals(s2));
        System.out.println("S1 and S2 equals ignoring case = " + s1.equalsIgnoreCase(s2));
        System.out.println("S1 and S2 compareTo = " + s1.compareTo(s2));
        System.out.println("S1 and S2 concate = " + s1.concat(s2));
        System.out.println("S1 substring(n) = " + s1.substring(5));
        System.out.println("S1 substring(n,m) = " + s1.substring(5,8));
        System.out.println("S1 toString() = " + s1.toString());
        int i = 100;
        System.out.println("S1.valueOf(variable) = " + (s1.valueOf(i)).length()); // converts the parameter to string
        System.out.println("Start with " + s1.startsWith("P"));
        System.out.println("Start with " + s1.endsWith("y"));
       
    }
}