JAVA RECORD PROGRAM TO UNDERSTAND STRING OPERATIONS

 public class StringExample {

    public static void main(String[] args) {

        // Creating a string

        String str = "Hello, World!";

        

        // Length of the string

        int length = str.length();

        System.out.println("Length of the string: " + length);

        

        // Getting character at a specific index

        char ch = str.charAt(7);

        System.out.println("Character at index 7: " + ch);

        

        // Substring

        String substr = str.substring(7, 12);

        System.out.println("Substring from index 7 to 11: " + substr);

        

        // Converting to uppercase

        String upperCase = str.toUpperCase();

        System.out.println("Uppercase string: " + upperCase);

        

        // Converting to lowercase

        String lowerCase = str.toLowerCase();

        System.out.println("Lowercase string: " + lowerCase);

        

        // Index of a substring

        int index = str.indexOf("World");

        System.out.println("Index of 'World': " + index);

        

        // Checking if starts with

        boolean startsWith = str.startsWith("Hello");

        System.out.println("Starts with 'Hello': " + startsWith);

        

        // Checking if ends with

        boolean endsWith = str.endsWith("!");

        System.out.println("Ends with '!': " + endsWith);

        

        // Splitting the string

        String[] parts = str.split(",");

        System.out.println("Splitting the string:");

        for (String part : parts) {

            System.out.println(part.trim());

        }

        

        // Replacing characters

        String replaced = str.replace("World", "Universe");

        System.out.println("After replacing 'World' with 'Universe': " + replaced);

        

        // Trimming whitespace

        String trimmed = "  Hello, World!  ".trim();

        System.out.println("After trimming whitespace: " + trimmed);

    }

}