StringMethods.java

package Java_basic_Programs;
import java.sql.SQLOutput;
import java.util.Locale;
import java.util.Scanner;

public class StringMethods {
    public static void main(String[] args) {
//        String a = "Akash";
//        System.out.println(a);

//        String a1 = new String("Akash");
//        System.out.println(a1);
// Strings in Java is immutable so we can not change the string but we can do so by copping the string into
// another variable
//        System.out.println(a.length()); // use to find the length of string
//        System.out.println(a.toLowerCase(Locale.ROOT));     // to convert into lower case
//        System.out.println(a.toUpperCase(Locale.ROOT));     // to convert into upper case
//        System.out.println(a.compareTo("Akash"));       // for comparing strings
//        System.out.println(a.concat(" Deep"));      // for concatenating strings
//        System.out.println(a.equals("Akash"));      // for checking equal
//        System.out.println(a.contains("Aka"));      // for checking sub-string in given string
//
//
//        String s1 = "          Akash         ";
//        System.out.println(s1);
//        System.out.println(s1.trim());  // for trimming the string

//        String name = "Akash Deep Vishwakarma";
//        String sub_name = name.substring(3);     // prints sub-string from the given index number of the string
//        System.out.println(sub_name);
//        System.out.println(name.substring(6,11)); // it prints sub-string from index start to (end-1)
//
//        String Replaced_name = name.replace("A","Pra");  // for replacement of string in the given string
//        System.out.println(Replaced_name);
//
//        System.out.println(name.startsWith("A")); // returns true if it starts with given character
//        System.out.println(name.endsWith("A"));     //returns true if it ends with given character
//
//        System.out.println(name.charAt(3));     // returns character at given index
//
//        System.out.println(name.indexOf("s"));  // returns index value of given character. It returns first occurance only
//        System.out.println();

//        String naam = "Harryrry";
//        System.out.println(naam.indexOf("rry",4)); // it will start from index (4+1). returns
//        // -1 if it does not find the sub-string or character in the given string.
//
//        System.out.println(naam.lastIndexOf('r'));  // returns last index of given character in the string
//
//        System.out.println(naam.equalsIgnoreCase("HARRYRry"));
    }
}