String Manipulation

1public class StringDemo {
2    public static void main(String[] args) {
3        String text = "Hello, Skill-Forge!";
4 
5        System.out.println(text.length());           // 19
6        System.out.println(text.toUpperCase());      // HELLO, SKILL-FORGE!
7        System.out.println(text.substring(7));       // Skill-Forge!
8        System.out.println(text.contains("Forge"));  // true
9        System.out.println(text.replace("Hello", "Welcome")); // Welcome, Skill-Forge!
10 
11        // Comparison
12        String a = "hello";
13        String b = "hello";
14        System.out.println(a.equals(b));   // true
15        System.out.println(a == b);        // true (string pool)
16    }
17}