Question Set

1. What will be the output of the program? public class WrapTest { public static void main(String [] args) { int result = 0; short s = 42; Long x = new Long("42"); Long y = new Long(42); Short z = new Short("42"); Short x2 = new Short(s); Integer y2 = new Integer("42"); Integer z2 = new Integer(42); if (x == y) / Line 13 / result = 1; if (x.equals(y) ) / Line 15 / result = result + 10; if (x.equals(z) ) / Line 17 / result = result + 100; if (x.equals(x2) ) / Line 19 / result = result + 1000; if (x.equals(z2) ) / Line 21 / result = result + 10000; System.out.println("result = " + result); } }





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
    Line 13 fails because == compares reference values, not object values. Line 15 succeeds because both String and primitive wrapper constructors resolve to the same value (except for the Character wrapper). Lines 17, 19, and 21 fail because the equals() method fails if the object classes being compared are different and not in the same tree hierarchy.
Show Similar Question And Answers
QA->Average height of 10 students in a class is 150 cm. A boy of height 160 cm left the class and a boy of height 148 cm is admitted. Then what is the average height of the students in the class now?....
QA->There are 50 students in a class. In a class test 22 students get 25 marks each, 18 students get 30 marks each. Each of the remaining gets 16 marks. The average mark of the whole class is :....
QA->Null and void....
QA->Energy stored in a compressed string is?....
QA->Name the translatory program which translates the high level language into machine language before running the program?....
MCQ->What will be the output of the program? public class WrapTest { public static void main(String [] args) { int result = 0; short s = 42; Long x = new Long("42"); Long y = new Long(42); Short z = new Short("42"); Short x2 = new Short(s); Integer y2 = new Integer("42"); Integer z2 = new Integer(42); if (x == y) / Line 13 / result = 1; if (x.equals(y) ) / Line 15 / result = result + 10; if (x.equals(z) ) / Line 17 / result = result + 100; if (x.equals(x2) ) / Line 19 / result = result + 1000; if (x.equals(z2) ) / Line 21 / result = result + 10000; System.out.println("result = " + result); } }....
MCQ->Which of the following statement is correct about the program given below? #include<iostream.h> static int Result; class India { public: void Change(int x = 10, int y = 20, int z = 30) { cout<< x + y + z; } void Display(int x = 40, float y = 50.00) { Result = x % x; cout<< Result; } }; class Bix { int x, y; public: void Change(int x, int y = 50) { cout<< x + y; } }; class IndiaBix: public India, public Bix { public: void Display(int x = 10, int xx = 100, int xxx = 1000) { Result = x + xx % x x; cout<< Result ; } }; int main() { IndiaBix objBix; objBix.India::Display(10, 20.00); return 0; }....
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->What will be the output of the program? class s1 extends Thread { public void run() { for(int i = 0; i < 3; i++) { System.out.println("A"); System.out.println("B"); } } } class Test120 extends Thread { public void run() { for(int i = 0; i < 3; i++) { System.out.println("C"); System.out.println("D"); } } public static void main(String args[]) { s1 t1 = new s1(); Test120 t2 = new Test120(); t1.start(); t2.start(); } }....
MCQ->What will be the output of the program? public class Test { public static int y; public static void foo(int x) { System.out.print("foo "); y = x; } public static int bar(int z) { System.out.print("bar "); return y = z; } public static void main(String [] args ) { int t = 0; assert t > 0 : bar(7); assert t > 1 : foo(8); / Line 18 / System.out.println("done "); } }....
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
Question ANSWER With Solution