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Amazing course. Explained super difficult concepts (that I have spent hours on the internet finding a good explanation) in under 5 minutes.Start Learning Now. Hit the Enroll Button!******* Questions Discussed in this Interview Course *******Java Platform1 . Why is Java so popular?2 . What is platform independence?3 . What is bytecode?4 . Compare JDK vs JVM vs JRE 5 . What are the important differences between C++ and Java?6 . What is the role for a classloader in Java?Wrapper Classes7 . What are Wrapper classes?8 . Why do we need Wrapper classes in Java?9 . What are the different ways of creating Wrapper class instances?10 . What are differences in the two ways of creating Wrapper classes?11 . What is auto boxing?12 . What are the advantages of auto boxing?13 . What is casting?14 . What is implicit casting?15 . What is explicit casting?Strings16 . Are all Strings immutable?17 . Where are String values stored in memory?18 . Why should you be careful about String concatenation(+) operator in loops?19 . How do you solve above problem?20 . What are differences between String and StringBuffer?21 . What are differences between StringBuilder and StringBuffer?22 . Can you give examples of different utility methods in String class?Object oriented programming basics23 . What is a class?24 . What is an object?25 . What is state of an object?26 . What is behavior of an object?27 . What is the super class of every class in Java?28 . Explain about toString method ?29 . What is the use of equals method in Java?30 . What are the important things to consider when implementing equals method?31 . What is the Hashcode method used for in Java?32 . Explain inheritance with examples . 33 . What is method overloading?34 . What is method overriding?35 . Can super class reference variable can hold an object of sub class?36 . Is multiple inheritance allowed in Java?37 . What is an interface?38 . How do you define an interface?39 . How do you implement an interface?40 . Can you explain a few tricky things about interfaces?41 . Can you extend an interface?42 . Can a class extend multiple interfaces?43 . What is an abstract class?44 . When do you use an abstract class?45 . How do you define an abstract method?46 . Compare abstract class vs interface?47 . What is a constructor?48 . What is a default constructor?49 . Will this code compile?50 . How do you call a super class constructor from a constructor?51 . Will this code compile?52 . What is the use of this()?53 . Can a constructor be called directly from a method?54 . Is a super class constructor called even when there is no explicit call from a sub class constructor?Advanced object oriented concepts55 . What is polymorphism?56 . What is the use of instanceof operator in Java?57 . What is coupling?58 . What is cohesion?59 . What is encapsulation?60 . What is an inner class?61 . What is a static inner class?62 . Can you create an inner class inside a method?63 . What is an anonymous class?Modifiers64 . What is default class modifier?65 . What is private access modifier?66 . What is default or package access modifier?67 . What is protected access modifier?68 . What is public access modifier?69 . What access types of variables can be accessed from a class in same package?70 . What access types of variables can be accessed from a class in different package?71 . What access types of variables can be accessed from a sub class in same package?72 . What access types of variables can be accessed from a sub class in different package?73 . What is the use of a final modifier on a class?74 . What is the use of a final modifier on a method?75 . What is a final variable?76 . What is a final argument?77 . What happens when a variable is marked as volatile?78 . What is a static variable?conditions & loops79 . Why should you always use blocks around if statement?80 . Guess the output81 . Guess the output82 . Guess the output of this switch block . 83 . Guess the output of this switch block?84 . Should default be the last case in a switch statement?85 . Can a switch statement be used around a String86 . Guess the output of this for loop87 . What is an enhanced for loop?88 . What is the output of the for loop below?89 . What is the output of the program below?90 . What is the output of the program below?Exception handling91 . Why is exception handling important?92 . What design pattern is used to implement exception handling features in most languages?93 . What is the need for finally block?94 . In what scenarios is code in finally not executed?95 . Will finally be executed in the program below?96 . Is try without a catch is allowed?97 . Is try without catch and finally allowed?98 . Can you explain the hierarchy of exception handling classes?99 . What is the difference between error and exception?100 . What is the difference between checked exceptions and unchecked exceptions?101 . How do you throw an exception from a method?102 . What happens when you throw a checked exception from a method?103 . What are the options you have to eliminate compilation errors when handling checked exceptions?104 . How do you create a custom exception?105 . How do you handle multiple exception types with same exception handling block?106 . Can you explain about try with resources?107 . How does try with resources work?108 . Can you explain a few exception handling best practices?Miscellaneous topics109 . What are the default values in an array?110 . How do you loop around an array using enhanced for loop?111 . How do you print the content of an array?112 . How do you compare two arrays?113 . What is an enum?114 . Can you use a switch statement around an enum?115 . What are variable arguments or varargs?116 . What are asserts used for?117 . When should asserts be used?118 . What is garbage collection?119 . Can you explain garbage collection with an example?120 . When is garbage collection run?121 . What are best practices on garbage collection?122 . What are initialization blocks?123 . What is a static initializer?124 . What is an instance initializer block?125 . What is tokenizing?126 . Can you give an example of tokenizing?127 . What is serialization?128 . How do you serialize an object using serializable interface?129 . How do you de-serialize in Java?130 . What do you do if only parts of the object have to be serialized?131 . How do you serialize a hierarchy of objects?132 . Are the constructors in an object invoked when it is de-serialized?133 . Are the values of static variables stored when an object is serialized?Collections134 . Why do we need collections in Java?135 . What are the important interfaces in the collection hierarchy?136 . What are the important methods that are declared in the collection interface?137 . Can you explain briefly about the List interface?138 . Explain about ArrayList with an example?139 . Can an ArrayList have duplicate elements?140 . How do you iterate around an ArrayList using iterator?141 . How do you sort an ArrayList?142 . How do you sort elements in an ArrayList using comparable interface?143 . How do you sort elements in an ArrayList using comparator interface?144 . What is vector class? How is it different from an ArrayList?145 . What is linkedList? What interfaces does it implement? How is it different from an ArrayList?146 . Can you briefly explain about the Set interface?147 . What are the important interfaces related to the Set interface?148 . What is the difference between Set and sortedSet interfaces?149 . Can you give examples of classes that implement the Set interface?150 . What is a HashSet?151 . What is a linkedHashSet? How is different from a HashSet?152 . What is a TreeSet? How is different from a HashSet?153 . Can you give examples of implementations of navigableSet?154 . Explain briefly about Queue interface?155 . What are the important interfaces related to the Queue interface?156 . Explain about the Deque interface?157 . Explain the BlockingQueue interface?158 . What is a priorityQueue?159 . Can you give example implementations of the BlockingQueue interface?160 . Can you briefly explain about the Map interface?161 . What is difference between Map and sortedMap?162 . What is a HashMap?163 . What are the different methods in a Hash Map?164 . What is a TreeMap? How is different from a HashMap?165 . Can you give an example of implementation of navigableMap interface?166 . What are the static methods present in the collections class?Advanced collections167 . What is the difference between synchronized and concurrent collections in Java?168 . Explain about the new concurrent collections in Java?169 . Explain about copyonwrite concurrent collections approach?170 . What is compareandswap approach?171 . What is a lock? How is it different from using synchronized approach?172 . What is initial capacity of a Java collection?173 . What is load factor?174 . When does a Java collection throw UnsupportedOperationException?175 . What is difference between fail-safe and fail-fast iterators?176 . What are atomic operations in Java?177 . What is BlockingQueue in Java?Generics178 . What are Generics?179 . Why do we need Generics? Can you give an example of how Generics make a program more flexible?180 . How do you declare a generic class?181 . What are the restrictions in using generic type that is declared in a class declaration?182 . How can we restrict Generics to a subclass of particular class?183 . How can we restrict Generics to a super class of particular class?184 . Can you give an example of a generic method?Multi threading185 . What is the need for threads in Java?186 . How do you create a thread?187 . How do you create a thread by extending thread class?188 . How do you create a thread by implementing runnable interface?189 . How do you run a thread in Java?190 . What are the different states of a thread?191 . What is priority of a thread? How do you change the priority of a thread?192 . What is executorservice?193 . Can you give an example for executorservice?194 . Explain different ways of creating executor services . 195 . How do you check whether an executionservice task executed successfully?196 . What is callable? How do you execute a callable from executionservice?197 . What is synchronization of threads?198 . Can you give an example of a synchronized block?199 . Can a static method be synchronized?200 . What is the use of join method in threads?201 . Describe a few other important methods in threads?202 . What is a deadlock?203 . What are the important methods in Java for inter-thread communication?204 . What is the use of wait method?205 . What is the use of notify method?206 . What is the use of notifyall method?207 . Can you write a synchronized program with wait and notify methods?Functional Programming – Lamdba expressions and Streams208 . What is functional programming?209 . Can you give an example of functional programming?210 . What is a stream?211 . Explain about streams with an example?what are intermediate operations in streams?212 . What are terminal operations in streams?213 . What are method references?214 . What are lambda expressions?215 . Can you give an example of lambda expression?216 . Can you explain the relationship between lambda expression and functional interfaces?217 . What is a predicate?218 . What is the functional interface – function?219 . What is a consumer?220 . Can you give examples of functional interfaces with multiple arguments?New Features221 . What are the new features in Java 5?222 . What are the new features in Java 6?223 . What are the new features in Java 7?224 . What are the new features in Java 8?Start Learning Now. Hit the Enroll Button!