What will be the output of the program? import java.util.*; class H { public static void main (String[] args) { Object x = new Vector().elements(); System.out.print((x instanceof Enumeration)+","); System.out.print((x instanceof Iterator)+","); System.out.print(x instanceof ListIterator); } }

What will be the output of the program? import java.util.*; class H {

1.	What will be the output of the program? `import java.util.*; class H { public static void main (String[] args) { Object x = new Vector().elements(); System.out.print((x instanceof Enumeration)+","); System.out.print((x instanceof Iterator)+","); System.out.print(x instanceof ListIterator); } }`
A.	Prints: false,false,false
B.	Prints: false,false,true
C.	Prints: false,true,false
D.	Prints: true,false,false
Answer» E.

Discussion

No Comment Found

Related MCQs

<pre><code class="java">class HappyGarbage01 { public static void main(String args[]) { HappyGarbage01 h = new HappyGarbage01(); h.methodA(); /* Line 6 */ } Object methodA() { Object obj1 = new Object(); Object [] obj2 = new Object[1]; obj2[0] = obj1; obj1 = null; return obj2[0]; } } </code></pre> Where will be the most chance of the garbage collector being invoked?
What will be the output of the program? <pre><code class="java">public class Foo { public static void main(String[] args) { try { return; } finally { System.out.println( "Finally" ); } } } </code></pre>
Which one is a valid declaration of a boolean?
Which one of the following will declare an array and initialize it with five numbers?
Which three are valid declarations of a float? <ol class="java-ol-1234"> <li>float f1 = -343;</li> <li>float f2 = 3.14;</li> <li>float f3 = 0x12345;</li> <li>float f4 = 42e7;</li> <li>float f5 = 2001.0D;</li> <li>float f6 = 2.81F;</li> </ol>
Which is a valid declarations of a String?
Which three are legal array declarations? <ol class="java-ol-1234"> <li>int [] myScores [];</li> <li>char [] myChars;</li> <li>int [6] myScores;</li> <li>Dog myDogs [];</li> <li>Dog myDogs [7];</li> </ol>
Which three are valid declarations of a char? <ol class="java-ol-1234"> <li>char c1 = 064770;</li> <li>char c2 = 'face';</li> <li>char c3 = 0xbeef;</li> <li>char c4 = u0022;</li> <li>char c5 = ' iface';</li> <li>char c6 = ' uface';</li> </ol>
Which is the valid declarations within an interface definition?
<pre><code class="java">public interface Foo { int k = 4; /* Line 3 */ } </code></pre> Which three piece of codes are equivalent to line 3? <ol class="java-ol-1234"> <li>final int k = 4;</li> <li>public int k = 4;</li> <li>static int k = 4;</li> <li>abstract int k = 4;</li> <li>volatile int k = 4;</li> <li>protected int k = 4;</li> </ol>

What will be the output of the program?
`import java.util.*; class H { public static void main (String[] args) { Object x = new Vector().elements(); System.out.print((x instanceof Enumeration)+","); System.out.print((x instanceof Iterator)+","); System.out.print(x instanceof ListIterator); } }`

Discussion

No Comment Found

Related MCQs

Reply to Comment