builtInMethods.java

//Question: ALL ABOUT BUILT IN METHODS OF STRING
package strings;
public class builtInMethods {
    public static void main(String[] args) {
        // length(); charAt();
        String s = "Raj Sarkar";
        System.out.println("Length= " + s.length());
        System.out.println("Index 2 element= " + s.charAt(2));

        // indexOf(); compareTo();
        System.out.println("Index of 'a' from first= " + s.indexOf('a'));
        System.out.println("Index of 'a' from last= " + s.lastIndexOf('a'));
        String p = "Ram Sarkar";
        System.out.println("Compare of 2 Strings= " + s.compareTo(p));  // compareTo() is used to comapre 2 Strings lexographically. Pahle dono Strings ka first element compare karega. Agar ascii value main difference hai to wo print kar dega. Aur fir next element check karega.

        // contains(); startsWith();
        System.out.println("Is sub String (Sar) present in s String? = " + s.contains("Sar"));  // Boolean output
        System.out.println("Is s String starts with (Ra)? = " + s.startsWith("Ra"));
        System.out.println("Is s String ends with (mar)? = " + s.endsWith("mar"));

        // toLowerCase(); concat();
        System.out.println("Make all elements of s to lower case= " + s.toLowerCase());
        System.out.println("Make all elements of s to upper case= " + s.toUpperCase());
        System.out.println("Concat 2 Strings= " + s.concat(p));
        
        // substring();
        System.out.println("Sub String from index 4= " + s.substring(4));  // Print the 4th index and aage wale indices ke elements
        System.out.println("Get the part of the string from 1 to 6-1 index= " + s.substring(1,6));
        System.out.println(s.substring(2,2));  // Kuch bhi print nahi hoga
        System.out.println(s.substring(2,3));  // 2nd index wala element print ho jayega
    }
}