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Advanced java interview questions and answers pdf

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Those, who want to crack Advanced Java Interview, need to download Advanced Java Interview Questions and Answers Pdf which are very. Top 50 Advanced Java Interview Questions and Answers. In-depth guide with answers to wow the interviewer. Bonus: 20+ Videos & PDF interview guide. Java Interview Questions Why is Java called the Platform Independent Programming Language? .. Both implementations share some common.


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These interview questions and answers on Advanced Java will help you strengthen Interview preparation PDF was generated at Monday 12th January, Technical interview questions and answers section on "Advanced Java" with freshers can download Advanced Java quiz questions with answers as PDF files . Java Interview Questions And Answers Pdf Yes, We can execute any code, even before the main method. We are using a static block.

An anonymous class may implement an interface or extend a superclass, but may not be declared to do both. Next parameter is the value. During method Overloading, method name should remain same. Associatity determines whether an expression is evaluated left-to-right or right-to-left. What is a JVM? Get Post Limited amount of data can be sent because data is sent in header. The finally clause is used to provide the capability to execute code no matter whether or not an exception is thrown or caught.

It also keeps them safe from external intervention and misuse.

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One object inherits the properties and methods of another Object. Polymorphism It is an ability of an object to take on many forms. Compile time polymorphism — method over loading.

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Run time polymorphism — method overriding. Main features of java are very Simple. So Java will support multi-inheritance via single inheritance with interfaces to overcome above issues. A static is a member of a class that's not associated with instance.

So static members can be accessed without creating an instance of a class. Got a tip or Question? Let us know.

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String args[]: It is the parameter passed to the main method. Array List Vector Array List is not synchronized. Vector is synchronized. Vector is slow as it is thread safe.

Vector defaults to doubling size of its array. Array List does not define the increment size.

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Vector defines the increment size. Array List can only use Iterator for traversing an Array List. Except Hashtable, Vector is the only other class which uses both Enumeration and Iterator. Features Stack Heap Memory Stack memory is used only by one thread of execution.

Heap memory is used by all the parts of the application.

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Objects stored in the heap are globally accessible. Hence, there are no references to the object created in the method. Garbage Collection runs at the whims and fancies of the JVM it isn't as bad as that. Possible situations when Garbage Collection might run are.

JVM might throw an OutOfMemoryException when memory is full and no objects on the heap are eligible for garbage collection. We recommend not to write any code in finalize ;.

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Look at the example below: This is run only when class is first loaded. Only static variables can be accessed in a static initializer.

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Even though three instances are created static initializer is run only once. Code within instance initializer is run every time an instance of the class is created. Regular Expressions make parsing, scanning and splitting a string very easy. We will first look at how you can evaluate a regular expressions in Java — using Patter, Matcher and Scanner classes. We will then look into how to write a regular expression. Tokenizing means splitting a string into several sub strings based on delimiters.

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For example, delimiter ; splits the string ac;bd;def;e into four sub strings ac, bd, def and e. Lets now look at adding a few hours to a date object. All date manipulation to date needs to be done by adding milliseconds to the date. For example, if we want to add 6 hour, we convert 6 hours into millseconds.