What are the Abstract Classes provided by Java?

5 Answers   Oracle,

---

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  

---

Can we define package statement after import statement in java?

0 Answers  

---

Can You Have Virtual Functions In Java?

0 Answers  

---

What are the data types supported by java?

0 Answers  

---

why ,we are using jsp and html.which one is better?

2 Answers   Photon,

---

Can Java be said to be the complete object-oriented programming language

1 Answers  

---

In a class implementing an interface, can we change the value of any variable defined in the interface?

0 Answers  

---

What is the difference between array list and vector in java?

0 Answers  

---

What are peerless components in java programming?

0 Answers  

---

What are the main concepts of oops in java?

4 Answers  

---

Can an anonymous class be declared as implementing an interface and extending a class?

2 Answers  

---