Why are getters and setters used?
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What do you know about java?
What should I import for arraylist in java?
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.
What are the files generated after using IDL to java compiler?
What is difference between hashset and hashmap in java?
Is hashmap thread safe?
How can we create a thread in java?
List the different types of classloaders in java.
What is integer valueof?
Define how can we find the actual size of an object on the heap?
What is a consumer in java?
Is main a function?