Certified Java Programmer Mock Exam

Question 1

class L {
  public static void main (String s[]) {
    int i = 1 + 2 | 1 << 2 ^ 1 | 1;
    System.out.println(i%5);
  }
}

What is the result of attempting to compile and run the above program?

Question 2

class L {
  public static void main (String s[]) {
    int i = 1 | 2 ^ 3 >> 2 & 14 + 2;
    System.out.println(i);
  }
}

What is the result of attempting to compile and run the above program?

Question 3

class A {
  static int m(int i, String s) {
    System.out.print("["+s+","+i+"]"+",");
    return i;
  }
  public static void main (String[] args) {
    int i = 0;
    int a[] = new int[3];
    a[m(i++,"a")] = m(i++,"b");
    System.out.print(a[0]+","+a[1]+","+a[2] +","+ i);
  }
}

What is the result of attempting to compile and run the above program?

Question 4

class T {
  public static void main(String args[]) {
    String a = "1";
    byte b = 2;
    short c = 3;
    char d = 4;
    int e = 5;
    float f = 2;
    a += b *= c += d *= e += f;
    System.out.print(a);
  }
}

What is the result of attempting to compile and run the above program?

Question 5

class M {
  static int m(int i) {
    System.out.print(i + ", ");
    return i;
  }

  public static void main(String s[]) {
    int i=0;
    System.out.print(m(++i) | m(++i) & m(++i) + m(++i) % m(++i));
  }
}

What is the result of attempting to compile and run the above program?

Question 6

class D {
  static int m1(int i, String s) {
    System.out.print("["+s+","+i+"]"+",");
    return i;
  }

  static int m2(int i, String s) {
    System.out.print("["+s+","+i+"]"+",");
    return 0;
  }
  public static void main (String[] args) {
    int i = 0;
    i = m1(++i,"A") + m2(i,"B") + m1(i++,"C") + m2(i,"D");
    System.out.print(i);
  }
}

What is the result of attempting to compile and run the above program?

Question 7

class B {
  static int x;
  static int m(int i) {
    System.out.print(i + ",");
    x += i;
    return 0;
  }
  public static void main (String[] args) {
    int i = 0;
    int j = 0;
    int k = 0;
    i = j = k = i++ + m(i) + j++ + m(j) + k++ + m(k);
    System.out.print(i + j + k + "," + x);
  }
}

What is the result of attempting to compile and run the above program?

Question 8

class A {
  static int m(int i, String s) {
    System.out.print("["+s+","+i+"]"+",");
    return i;
  }
  public static void main (String[] args) {
    int i = 0;
    int a[] = {0,1,2};
    a[m(i++,"a")] = a[m(i++,"b")] = a[m(i++,"c")];
    System.out.print(a[0]+","+a[1]+","+a[2]);
  }
}

What is the result of attempting to compile and run the above program?

Question 9

class M {
  static int m(int i) {
    System.out.print(i + ", ");
    return i;
  }
  public static void main(String s[]) {
    int i=0;
    int j=0;
    System.out.print(m(++i) | m(++i) & m(++i) >> m(++j) / m(++j) + m(++j));
  }
}

What is the result of attempting to compile and run the above program?

Question 10

class C {
  static int m(int i) {
    System.out.print(i + ", ");
    return i;
  }

  public static void main(String s[]) {
    int i = 1;
    m(m(++i) - m(i++) + ~m(-i) * -m(~i));
  }
}

What is the result of attempting to compile and run the above program?

Question 11

class F {
  public static void main (String []s) {
    int i = 1;
    i += ~i - -i * ++i + i-- % ++i * i++;
    System.out.print(i);
  }
}

What is the result of attempting to compile and run the above program?