Belajar string

class Main {
    public static void main(String[] args) {
        //latihan string
        System.out.println("program kalkulator!");
        String nama = "namaku";
        String Nama = "Namaku";
        String NAMA = "NAMAku";
        System.out.println(nama);
        System.out.println(Nama);
        System.out.println(NAMA);
        
        
    }
}