Given: 10. interface A { void x(); } 11. class B implements A { public void x() { } public voidy() { } } 12. class C extends B { public void x() {} } And: 20. java.util.List list = new java.util.ArrayList(); 21. list.add(new B()); 22. list.add(new C()); 23. for (A a:list) { 24. a.x(); 25. a.y();; 26. } What is the result? 1 Compilation fails because of an error in line 25. 2 The code runs with no output. 3 An exception is thrown at runtime. 4 Compilation fails because of an error in line 20.

3 Answers  

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Why destructor is not used in java?

0 Answers  

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What does business logic mean?

0 Answers  

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why using interface interface ?

0 Answers  

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class A{ m2(){ } } class B extends A{ m2(){ } } class c extends B{ m2(){ } } class my_class extends c{ m2(){ } pulic static void main(){ ...My_class a = new my_class(); super.super.super.m2(); is this is leagal if not find what is the legal procedure in order to call A's version of m2(); }

8 Answers   Logica CMG,

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When should we create our own custom exception classes?

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Does chrome use java?

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Does java have a compiler?

0 Answers  

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Does a class inherit the constructors of its superclass in java programming?

0 Answers  

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Is space a char?

0 Answers  

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What is a nested structure?

0 Answers  

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suppose string s1="rajnish"; string s2="bhaskar"; then what will be happend ?

9 Answers   Fidelity,

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