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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone {
  6. 	static String[] listaUsuarios = new String[] { "1", "12", "123" };
  7. 	public static void main (String[] args) throws java.lang.Exception {
  8. 		System.out.println(autentica("123"));
  9. 		System.out.println(autentica("456"));
  10. 	}
  11. 	public static boolean autentica (String usuario) {
  12. 	    for(int i = 0; i < listaUsuarios.length; i++) {
  13.     	    if(usuario.equals(listaUsuarios[i])) {
  14.         	    return true;
  15.         	}
  16.     	}
  17.     	//opcionalmente faz alguma coisa aqui.
  18.     	return false;
  19. 	}
  20. }
Success #stdin #stdout 0.06s 380224KB
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true
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https://ideone.com/2ksFva
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

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