interface DoMath { double getArea(int rad); } interface MathPlus { dou

→ Engineering
→ C Programming in Engineering

→

interface DoMath { ..


            
                        
                        

                             
                
                    
                        
                            
                                
                                    
                                    
                                    1.
                                
                                
                                    
                                        
interface DoMath { double getArea(int rad); }
interface MathPlus { double getVol(int b, int h); }
/* Missing Statements ? */

which two code fragments inserted at end of the program, will allow to compile?

class AllMath extends DoMath {
double getArea(int r); }
interface AllMath implements MathPlus {
double getVol(int x, int y); }
interface AllMath extends DoMath {
float getAvg(int h, int l); }
class AllMath implements MathPlus {
double getArea(int rad); }
abstract class AllMath implements DoMath, MathPlus {
public double getArea(int rad) { return rad * rad * 3.14; } }

                                    
                                
                            
                        

                        
                                                            
                                    A.
                                    1 only
                                    
                                
                                                            
                                    B.
                                    2 only
                                    
                                
                                                            
                                    C.
                                    3 and 5
                                    
                                
                                                            
                                    D.
                                    1 and 4
                                    
                                
                                                    

                        
                            
                                
                                    Answer» D. 1 and 4
                                
                            
                        

                        
                        
                            
                                
                                    
                                
                            
                        
                    
                    
                         
                    
                
            
            
             


            
                    Discussion
                
            
                
                                        No Comment Found
                                        
                        
                                                        
                            
                            
                                                        
                            
                            
                            
                                
                            
                        
                    
                
            



            
            
                Related MCQs
                
                                        
                        
                            <p></p><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?
                        
                    
                                        
                        
                            <p>What will be the output of the program?
</p><pre><code class="java">public class Foo { public static void main(String[] args) { try { return; } finally { System.out.println( "Finally" ); } } }
</code></pre>
                        
                    
                                        
                        
                            <p>Which one is a valid declaration of a boolean?</p>
                        
                    
                                        
                        
                            <p>Which one of the following will declare an array and initialize it with five numbers?</p>
                        
                    
                                        
                        
                            <p>Which three are valid declarations of a float?
</p><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>
                        
                    
                                        
                        
                            <p>Which is a valid declarations of a String?</p>
                        
                    
                                        
                        
                            <p>Which three are legal array declarations?
</p><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>
                        
                    
                                        
                        
                            <p>Which three are valid declarations of a char?
</p><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>
                        
                    
                                        
                        
                            <p>Which is the valid declarations within an interface definition?</p>
                        
                    
                                        
                        
                            <p></p><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>

1.	`interface DoMath { double getArea(int rad); } interface MathPlus { double getVol(int b, int h); } /* Missing Statements ? /` which two code fragments inserted at end of the program, will allow to compile? class AllMath extends DoMath { double getArea(int r); }* interface AllMath implements MathPlus { double getVol(int x, int y); } interface AllMath extends DoMath { float getAvg(int h, int l); } class AllMath implements MathPlus { double getArea(int rad); } abstract class AllMath implements DoMath, MathPlus { public double getArea(int rad) { return rad rad * 3.14; } }*
A.	1 only
B.	2 only
C.	3 and 5
D.	1 and 4
Answer» D. 1 and 4

Discussion

No Comment Found

Related MCQs

Reply to Comment