Questões para Certificação JAVA 1 4_pag25

Prévia do material em texto

Certified Java Programmer Mock Exam 25
What is the result of attempting to compile and run the above program? 
a. Prints: 0,0,0 
b. Prints: 0,0,3 
c. Prints: 0,3,0 
d. Prints: 0,3,3 
e. Prints: 3,0,0 
f. Prints: 3,0,3 
g. Prints: 3,3,0 
h. Prints: 3,3,3 
i. Runtime error 
j. Compiler error 
k. None of the above 
 
Question 7 
class V { 
 public static void main (String[] args) { 
 System.out.print(Float.NaN % 2 + ","); 
 System.out.print(2 % Float.NaN); 
 } 
} 
What is the result of attempting to compile and run the above program? 
a. Prints: NaN,NaN 
b. Prints: NaN,2.0 
c. Prints: 2.0,NaN 
d. Prints: 2.0,2.0 
e. Runtime error 
f. Compiler error 
g. None of the above 
 
Question 8 
class L { 
 public static void main (String s[]) { 
 int i = 1 | 2 ^ 15 & 7 ^ 13 | 2; 
 System.out.println(i % 5); 
 } 
} 
What is the result of attempting to compile and run the above program? 
a. Prints: 1 
b. Prints: 2 
c. Prints: 3 
d. Prints: 4 
e. Prints: 5 
f. Runtime error 
g. Compiler error 
h. None of the above 
 
Question 9 
class Chartreuse { 
 public static void main (String[] args) { 
 short i = (short)Float.NEGATIVE_INFINITY; 
 short j = (short)Float.POSITIVE_INFINITY; 
 short k = (short)Float.NaN; 
 System.out.println((i == Short.MIN_VALUE) + 
 ", " + (j == Short.MAX_VALUE) + 
 ", " + (k == 0)); 
 } 
} 
What is the result of attempting to compile and run the above program? 
a. Prints: false, false, false 
b. Prints: false, false, true 
c. Prints: true, true, false 
d. Prints: true, true, true 
e. Compiler error. 
f. Run time error. 
 
Question 10 
class B { 
 static boolean m(boolean b) { 
 System.out.print(b + " "); 
 return b; 
 } 
 public static void main(String[] args) { 
 boolean a = false; 
 boolean b = false; 
 boolean c = true; 
 boolean d = false; 
 m(m(a | b == c & d) == m((a | b) == (c & d))); 
 } 
}