What is the use of System class?
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What data structures are used to perform recursion?
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How to do encapsulation in java?
What is a short in java?
How will you invoke any external process in java?
How is java hashmap implemented?
what is singleton in java?
What is percentage in java?
Differences between traditional programming language and object oriented programming language?
what is the use of custom tags? with example?
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 is the difference between a checked and an unchecked exception?
How does split work in java?