PSC Lecturer in Computer Science Model Questions and Answers

83. What does the following program output?

public class ABC
{
public static int function1(int p, int q)
{
if (q==0) return 1;
else if (p<q) return 0;
else
return function1(p-1,q)+function1(p-1,q-1);
}
public static void main(String[] args)
{
System.out.println(ABC.function1(3,2));
}
}

(A) 4 (B) 3
(C) 2 (D) 1
Answer: B

84. The following program prints:

public class XYZ
{
public static void main (String[] args)
{
byte val=(byte) 128;
System.out.println(val);
}
}

(A) -128 (B) 128
(C) 127 (D) -127
Answer:-Question Cancelled

85. The following Java program segment prints:

 String S1=new String("Hello");
 String S2=new String("Hello");
 if (S1==S2)
 System.out.println("They are same");
 else
 System.out.println("They are not same");

(A) They are same (B) They are not same
(C) Garbage (D) Run time error
Answer: B