What is the type of lambda expression?

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When do I need to use reflection feature in java?

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Explain scope or life time of local variables in java?

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Explain the use of shift operator in java. Can you give some examples?

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Is a method a function?

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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.

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What is the method used to get the absolute value of a number?

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What is the full name of java?

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What is the main use of java?

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What is jar?

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What is the difference between hashset and treeset in java?

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Can we override private constructor in java?

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