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| Core java - Interview Questions and Answers for 'Xoriant' - 3 question(s) found - Order By Newest | ||||
 Very frequently asked. Among first few questions in almost all interviews. Among Top 5 frequently asked questions. Frequently asked in Indian service companies (HCL,TCS,Infosys,Capgemini etc based on multiple feedback ) and Epam Systems | ||||
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| Ans. "equals" is the method of object class which is supposed to be overridden to check object equality, whereas "==" operator evaluate to see if the object handlers on the left and right are pointing to the same object in memory. x.equals(y) means the references x and y are holding objects that are equal. x==y means that the references x and y have same object. Sample code: String x = new String("str"); String y = new String("str"); System.out.println(x == y); // prints false System.out.println(x.equals(y)); // prints true | ||||
 Sample Code for equals | ||||
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 Discuss Correct / Improve  java string comparison string object class == equals object equality operator == vs equals equals vs ==  Asked in 294 Companies  basic  frequent | ||||
 Try 6 Question(s) Test | ||||
 Related Questions | ||||
 What is the difference between = and == in Java ? | ||||
| How is == operator different for objects and primitive types ? | ||||
| What will be the output of following code Integer x = 1; Integer y = 2; System.out.println(x == y); What if you change 1 to "1" and Integer to String? | ||||
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| Ans. They are wrappers to primitive data types. They allow us to access primitives as objects. | ||||
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| Discuss Correct / Improve java data types wrapper classes Asked in 3 Companies basic frequent | ||||
| Related Questions | ||||
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| What are the Wrapper classes available for primitive types ? | ||||
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| Explain Autoboxing ? | ||||
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| What are Wrapper Classes ? What are Primitive Wrapper Classes ? | ||||
| What Design pattern Wrapper Classes implement ? | ||||
| Can we compare Integers by using equals() in Java ? | ||||
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| Ans. class A { void test() { System.out.println("test() method"); } } class B { void test() { System.out.println("test() method"); } } Suppose if Java allows multiple inheritance like this, class C extends A, B { } A and B test() methods are inheriting to C class. So which test() method C class will take? As A & B class test() methods are different , So here we would Facing Ambiguity. | ||||
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| Discuss Correct / Improve multiple inheritance object oriented programming (oops) oops concepts diamond problem Asked in 20 Companies basic frequent | ||||
