Below we have listed all the Java Interview Questions and answers. Feel free to comment on any Java Interview Questions or answer by the comment feature available on the page.
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Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. Java is a programming language expressly designed for use in the distributed environment of the Internet. It was designed to have the "look and feel" of the C++ language, but it is simpler to use than C++ and enforces an object-oriented programming model.
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What class of exceptions are generated by the Java run-time system? | 
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When is an object subject to garbage collection? |
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What is the range of the short type? |
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We know that Object class is super class of every class & a class extends only one class. so how is it possible to a class to extend other than Object class? |
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What is J2EE |
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How an Hashtable can change the iterator? Can a HashMap change the iterator? |
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How to invoke the primitive types within object in arraylist? | 
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What is garbage collection? |
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Why are the methods of the Math class static? |
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What are the high-level thread states? |
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In which package are most of the AWT events that support the event-delegation model defined? |
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What is the difference between the File and RandomAccessFile classes? |
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How have you done validation of the fileds in your project? |
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In a Container there are 5 components. I want to display the all the components names, how will you do that? |
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What is Java Beans ? |
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What is Socket. How will you create a connection? |
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1-explain singleton pattern in java 2-explain up casting and down casting 3-how do u code a singleton in java 4-How do u read XML file in java 5-gine an example of the Decorator pattern in the java API. 6-What r the services provided by the container? 7-what r bean managed transaction? 8-what r transaction attributes? 9-what is JTS? |
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After a thread is started, via its start() m? |
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What restrictions are placed on the location of a package statement within a source code file? |
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What are wrapper classes |
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