Review Questions

What will be printed when the following program is run?

public class ParameterPass {
    public static void main(String[] args) {
        int i = 0;
        addTwo(i++);
        System.out.println(i);
    }

    static void addTwo(int i) {
        i += 2;
    }
}

Select the one correct answer.

What will be the result of attempting to compile and run the following class?

public class Passing {
    public static void main(String[] args) {
        int a = 0; int b = 0;
        int[] bArr = new int[1]; bArr[0] = b;

        inc1(a); inc2(bArr);

        System.out.println("a=" + a + " b=" + b + " bArr[0]=" + bArr[0]);
    }

    public static void inc1(int x) { x++; }

    public static void inc2(int[] x) { x[0]++; }
}

Select the one correct answer.

Given the class

// Filename: Args.java
public class Args {
    public static void main(String[] args) {
        System.out.println(args[0] + " " + args[args.length-1]);
    }
}

what would be the result of executing the following on the command line?

java Args In politics stupidity is not a handicap

Select the one correct answer.

Which statements would cause a compilation error if inserted in the location indicated in the following program?

public class ParameterUse {
    static void main(String[] args) {
        int a = 0;
        final int b = 1;
        int[] c = { 2 };
        final int[] d = { 3 };
        useArgs(a, b, c, d);
    }

    static void useArgs(final int a, int b, final int[] c, int[] d) {
        // INSERT STATEMENT HERE.
    }
}

Select the two correct answers.