Set 12

Multiple Choice Question

QID: 
132

Consider the following lines of code:

Integer i = new Integer(42);
Long ln = new Long(42);
Double d = new Double(42.0);

Which of the following options are valid?

Select 3 options

A. i == ln;
B. ln == d;
C. i.equals(d);
D. d.equals(ln);
E. ln.equals(42);

Multiple Choice Question

QID: 
131

Consider the following code:

public class Conversion{
public static void main(String[] args){
int i = 1234567890;
float f = i;
System.out.println(i - (int)f);
}
}

What will it print when run?

Select 1 option

A. It will print 0.
B. It will not print 0.
C. It will not compile.
D. It will throw an exception at runtime.
E. None of the above.

Multiple Choice Question

QID: 
130

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

public class PromotionTest{
public static void main(String args[]){
int i = 5;
float f = 5.5f;
double d = 3.8;
char c = 'a';
if (i == f) c++;
if (((int) (f + d)) == ((int) f + (int) d)) c += 2;
System.out.println(c);
}
}

Select 1 option

A. The code will fail to compile.
B. It will print d.
C. It will print c.
D. It will print b
E. It will print a.

Multiple Choice Question

QID: 
129

Which of the following are valid operators in Java?

Select 4 options

A. !
B. ~
C. &
D. %=
E. $

Multiple Choice Question

QID: 
128

What will the following code print when run without any arguments ...

public class TestClass {
public static int m1(int i){
return ++i;
}
public static void main(String[] args) {
int k = m1(args.length);
k += 3 + ++k;
System.out.println(k);
}
}

Select 1 option

A. It will throw ArrayIndexOutofBoundsException.
B. It will throw NullPointerException.
C. 6
D. 5
E. 7
F. 2
G. None of these.

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