StringMethods1.java

/*Write programs for implementation of different
methods of:
 String class.
 StringBuffer class.*/

public class StringMethods1 {
    public static void main(String[] args) {
        String str = "Hello World";

        System.out.println(str);
        // length()
        System.out.println("Length: " + str.length());

        // toUpperCase()
        System.out.println("Uppercase: " + str.toUpperCase());

        // toLowerCase()
        System.out.println("Lowercase: " + str.toLowerCase());

        // charAt()
        System.out.println("Character at index 4: " + str.charAt(4));

        // substring()
        System.out.println("Substring (0 to 5): " + str.substring(0, 5));

        // indexOf()
        System.out.println("Index of 'o': " + str.indexOf('o'));

        // equals()
        System.out.println("Equals 'Hello World': " + str.equals("Hello World"));

        // contains()
        System.out.println("Contains 'World': " + str.contains("World"));
    }
}