stringmethod

public class stringbasic {

    public static void main(String[] args) {
        // String s = "newton";
        // String s1 = "newcedc";
        // String s2 = "cdfvdfvfg";
        // System.out.println(Integer.toHexString(s.hashCode())); // find refernce
        // System.out.println(Integer.toHexString(s1.hashCode())); // find refernce
        // s1= "Willitwokr";
        // String p = "Willitwokr";
        // System.out.println(s);
        // System.out.println(Integer.toHexString(s1.hashCode()));

        // // another way to create string
        // String sc= new String("hello");
        // String p1 = new String("hello");
        // p1 ="visjal";
        // System.out.println(p1);
        // System.out.println(sc);

        // charAt and length()

        String learnCode = " string is a very important ";
        // Find the number of space
        String s = learnCode.trim();
        int countspace = 0;
        for (int i = 0; i < s.length(); i++) {
            if (s.charAt(i) == ' ') {
                countspace++;
            }
        }
        System.out.println(countspace); // 4

        // trim method it removes the last and first emptyn space
        System.out.println(learnCode.trim());
        // Replace
        System.out.println(learnCode.replace(' ', ','));
        // toLowerCase
        System.out.println(learnCode.toLowerCase());

        // toUpperCase
        System.out.println(learnCode.toUpperCase());

        // indexOf
        System.out.println(learnCode.indexOf('s', 2));

        // substring
        System.out.println(learnCode.substring(2, 5));

        String ss = "visjal";

        String CONCATSRING = ss.concat("sharma");
        System.out.println(CONCATSRING);

        // Methods
        // charAt => particular
        // length =>
        // substring =>
        // concat =>
        // indexOf =>
        // toLowerCase
        // toUpperCase
        // trim
        // split
        // equalIgnoreCase
        // replace
        // equal
        // isEmpty
        // toCharArray
    }
}
// immutable
// In Java What is string
// Different way to create string
// What is the meaning of string literal
// what is mean by string immutable
// String pool constant heap
// Pool heap