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Interview Questions and Answers - Order By Rating | ||||
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Ans. Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc. | ||||
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Like Discuss Correct / Improve  java   string   hashcode   hash code   string comparison  hashtable Asked in 17 Companies basic   frequent | ||||
Frequently asked to fresh graduates and less experienced. | ||||
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Ans. Inheritance means a object inheriting reusable properties of the base class. Compositions means that an abject holds other objects. In Inheritance there is only one object in memory ( derived object ) whereas in Composition , parent object holds references of all composed objects. From Design perspective - Inheritance is "is a" relationship among objects whereas Composition is "has a" relationship among objects. | ||||
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Like Discuss Correct / Improve  java   oops   oops concepts   inheritance  object oriented programming (oops)  oops concepts   composition  object oriented programming (oops)  oops concepts   difference between   basic interview question Asked in 12 Companies basic   frequent | ||||
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Ans. public static void main(String ar[]) { int n=5; if((n/2)*2==n) { System.out.println("Even Number "); } else { System.out.println("Odd Number "); } } | ||||
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Like Discuss Correct / Improve  java   code   coding   tricky questions   interesting questions   modulus operator Asked in 4 Companies   frequent | ||||
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Ans. We are using cluster of Web servers and Application servers. Load Balancer is used to manage the load between them. Down the layer we have middleware server and then DB server to access database. | ||||
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Like Discuss Correct / Improve  architecture   production support   java   servers   application support Asked in 7 Companies   frequent | ||||
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Ans. Java only provides pass by value. | ||||
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Like Discuss Correct / Improve  ebay   pass by value   pass by reference   method call   methods   functions   function call Asked in 10 Companies basic   frequent | ||||
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Ans. There was no multiple inheritance in java before version 8 as implementing multiple interfaces cannot be termed as inheritance. With Java 8 , came the concept of default methods wherein the class implementing the interface carries the default implementation from the interface and hence facilitating multiple inheritance. | ||||
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Like Discuss Correct / Improve  multiple inheritance  object oriented programming (oops)  oops concepts   inheritance  object oriented programming (oops)  oops concepts   oops concept Asked in 10 Companies   frequent | ||||