Side effects of bitwiseAND vs logicalAND

BooleanTest.java

import org.junit.Test;

public class BooleanTest {

    private static boolean D = true;

    @Test
    public void bitwiseAND() {
        int finds = 0;
        int ctr = 0;
        for (int i = 0; i < 100; i++){
            if (i % 7 == 0 & ctr++ % 7 == 0){
if(D)           System.out.printf("i = %d , ctr = %d", i, ctr);
if(D)           System.out.print("\nfound one");
                finds++;
if(D)           System.out.println();
            }

        }
        System.out.printf("\nFound total items %d", finds);
        System.out.printf("\nFinal counter position %d", ctr);
        System.out.print("\n\n");
    }

    @Test
    public void logicalAND() {
        int finds = 0;
        int ctr = 0;
        for (int i = 0; i < 100; i++){
            if (i % 2 == 0 && ctr++ % 7 == 0){
if(D)           System.out.printf("i = %d , ctr = %d", i, ctr);
if(D)           System.out.print("\nfound one !");
                finds++;
if(D)           System.out.println();
            }

        }
        System.out.printf("\nFound total items %d", finds);
        System.out.printf("\nFinal counter position %d", ctr);
        System.out.print("\n\n");
    }
}