1. interface Base { boolean m1 (); byte m2(short s); } which two code fragments will compile? interface Base2 implements Base {} abstract class Class2 extends Base { public boolean m1(){ return true; }} abstract class Class2 implements Base {} abstract class Class2 implements Base { public boolean m1(){ return (7 > 4); }} abstract class Class2 implements Base { protected boolean m1(){ return (5 > 7) }}





Ask Your Doubts Here

Type in
(Press Ctrl+g to toggle between English and the chosen language)

Comments

  • By: guest on 02 Jun 2017 01.26 am
    (3) is correct because an abstract class doesn't have to implement any or all of its interface's methods. (4) is correct because the method is correctly implemented ((7 > 4) is a boolean). (1) is incorrect because interfaces don't implement anything. (2) is incorrect because classes don't extend interfaces. (5) is incorrect because interface methods are implicitly public, so the methods being implemented must be public.
Show Similar Question And Answers
QA->The reflection of a ray from a straight path due to particles, or in the interface between two media is called?....
QA->Compile (v)....
QA->.....is a device by virtue of which two persons at two different places can communicate. It consists of two main parts (i) a microphone and (ii) a receiver.?....
QA->A short but pithy and weightily saying, a short witty phrase....
QA->The two-letter country code domain ".dd" was reserved for which country, but never implemented?....
MCQ->interface Base { boolean m1 (); byte m2(short s); } which two code fragments will compile? interface Base2 implements Base {} abstract class Class2 extends Base { public boolean m1(){ return true; }} abstract class Class2 implements Base {} abstract class Class2 implements Base { public boolean m1(){ return (7 > 4); }} abstract class Class2 implements Base { protected boolean m1(){ return (5 > 7) }}....
MCQ->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; } }....
MCQ->Which two of the following are legal declarations for nonnested classes and interfaces? final abstract class Test {} public static interface Test {} final public class Test {} protected abstract class Test {} protected interface Test {} abstract public class Test {}....
MCQ->What will be the output of the program? public class BoolTest { public static void main(String [] args) { int result = 0; Boolean b1 = new Boolean("TRUE"); Boolean b2 = new Boolean("true"); Boolean b3 = new Boolean("tRuE"); Boolean b4 = new Boolean("false"); if (b1 == b2) / Line 10 / result = 1; if (b1.equals(b2) ) / Line 12 / result = result + 10; if (b2 == b4) / Line 14 / result = result + 100; if (b2.equals(b4) ) / Line 16 / result = result + 1000; if (b2.equals(b3) ) / Line 18 / result = result + 10000; System.out.println("result = " + result); } }....
MCQ->Which two statements are true for any concrete class implementing the java.lang.Runnable interface? You can extend the Runnable interface as long as you override the public run() method. The class must contain a method called run() from which all code for that thread will be initiated. The class must contain an empty public void method named run(). The class must contain a public void method named runnable(). The class definition must include the words implements Threads and contain a method called run(). The mandatory method must be public, with a return type of void, must be called run(), and cannot take any arguments.....
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use | Powered By:Omega Web Solutions
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions