/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
        int a, b, priznak;
 
        for(a = 2; a<100;a++){
            priznak = 0; //пока нет делителей
 
            for(b=2;b<=a/b;b++)
                if((a%b) == 0) { priznak++; break; }
 
            if(priznak==0)
                System.out.println(a + " is prime.");
        }
    }
}

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