Review Questions

What would be printed during execution of the following program?

public class MyClass {
    public static void main(String[] args) {
        test(1<<32, "1<<32");
        test(1<<31, "1<<31");
        test(1<<30, "1<<30");
        test(1,     "1"    );
        test(0,     "0"    );
        test(-1,    "-1"   );
    }

    public static void test(int i, String exp) {
        if ((i >> 1) != (i >>> 1)) System.out.println(exp);
    }
}

Select the two correct answers.

Which of the following are not operators in Java?

Select the two correct answers.

Given a variable x of type int (which may contain a negative value), which are correct ways of doubling the value of x, barring any wrapping of out-of-range intermediate values?

Select the four correct answers.

Which of the following operators can be used both as an integer bitwise operator and a boolean logical operator?

Select the three correct answers.

Given these declarations, which of the following expressions are valid?

byte  b = 1;
char  c = 1;
short s = 1;
int   i = 1;

Select the three correct answers.