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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		if( primo( 14  ) ) System.out.println("Verdadeiro"); else System.out.println("Falso");
  13. 		if( primo( 7   ) ) System.out.println("Verdadeiro"); else System.out.println("Falso"); //true
  14. 		if( primo( 997 ) ) System.out.println("Verdadeiro"); else System.out.println("Falso"); //true
  15. 		if( primo( 996 ) ) System.out.println("Verdadeiro"); else System.out.println("Falso");
  16.  
  17. 	}
  18.  
  19. 	public static boolean primo( int n )
  20.     {
  21.     	int contador = 0;
  22.  
  23.     	for( int j = 1; j <= Math.sqrt( n ); j++ )
  24.     		if( n % j == 0 )
  25.        		    if( ++contador == 2 )
  26.     		    	return false;
  27.  
  28.     	return true;
  29. 	}
  30. }
Success #stdin #stdout 0.04s 320576KB
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Standard input is empty
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Falso
Verdadeiro
Verdadeiro
Falso
https://ideone.com/vSrQf1
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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