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  1. import java.util.Scanner;
  2.  
  3. class Program {
  4.     public static void main(String[] args) {
  5.         System.out.printf("Informe uma string:\n");
  6.         String s = (new Scanner(System.in)).nextLine();
  7.         String maius = "";
  8.         String minus = "";
  9.         for (char c : s.toCharArray()) {
  10.             if (c >= 'a' && c <= 'z') maius += Character.toUpperCase(c);
  11.             else maius += c;
  12.             if (c >= 'A' && c <= 'Z') minus += Character.toLowerCase(c);
  13.             else minus += c;
  14.         }
  15.         System.out.printf("\nResultado:\n%s\n%s\n", maius, minus);
  16.     }
  17. }
  18.  
  19. //https://pt.stackoverflow.com/q/556383/101
Success #stdin #stdout 0.17s 53708KB
comments (?)
stdin 
Teste de Programa
stdout 
Informe uma string:

Resultado:
TESTE DE PROGRAMA
teste de programa
https://ideone.com/qH1RSs
language:
Java (HotSpot 12)
created:
3 years ago
visibility:
public

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