explain the life cycle of thread?

CTS, NIIT, TCS,

what is polymorphism?

Zensar,

what is mean by overriding in which situation we wil use?

Atlas Systems, CSC, DCPL,

what ide u r using and wat version, how wil u build the project etc ?

what is difference between throw and throws in exception?

Spenco,

What is difference between Iterator and for loop

HP,

what is polymorhism what is inheritance? what is Abstract n Interface? what if two interfaces have same method and a concrete class is implementing both the interfaces. Will there be a compilation error? What are mutable and immutable classes? How can u make a class mutable? when will u use dem ...explain with example? what is overriding and overloading? what is garbage collection? what is Thread? how do dey communicate? what are the different ways of implementing ? have u used any messaging technologies? what is synchronization? what are some additions in java 1.5? what are generics? whst is advanced for loop? what is finally block? can u have a try in finally? yes!! can u have a finally in finally? how do you write junits? when is a object eligible for garbage collection?explain? a = null and b has ref to a will b be eligible to be garbage collected? sql questions like diff joins? how do dey work? exception handling? what is marker interface? what is the need??

JPMorgan Chase,

Thanks A.jyotsna, Can u tell me differnce between abstract class and interface vikash

how can you retrive information from database by using hashmap/arraylist ,plz explain with example briefly?

Satyam,

how can u handle run time exception in java? explain with brief explanation with examples?

CTS,

23. Storage space in java is of the form Stack Queue Heap List 24. What is java code embedded in a web page known as Applets Servlets scriptlets snippets 25. Which of the following attributes are compulsory with an tag?. code,height & width. 26. What does 'CODEBASE' in an applet tag specify?. Files absolute path.

TCS,

2476

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What is Ideal Design of Class?

2 4940

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Need 2+ yrs experienced java techinical question papaer for company Iflex

TCS,

1 10244

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class A{ some variables; public void a()throws Excepion1,Exception2{....} } class B extends A{ variables... public void a()throws E2,E3{.....} } Qns: here override of methods occurs or not,ore else wil give any compilation error or run properly..plz tell me briefly whts happening with the above codes....

Quinnox,

4 8726

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what is difference between business delegate and data access object(dao)? in java?

1 8117

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Post New Core Java Questions

Un-Answered Questions { Core Java }

What is procedure overloading?

2314

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Is string is a keyword in java?

978

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What are keywords give examples?

1054

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1019

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What is nullpointerexception in java?

1162

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Describe 2 different ways to concatenate two strings.

1206

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What is the difference between iterator and enumeration ?

1006

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What are packages in java?

1663

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what methods would you overwrite in java.lang.object class?

1006

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What is double word?

977

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What happens when you add a double value to a string?

1003

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What is a boolean structure?

1091

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What is ph and buffers?

1006

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When a thread is executing synchronized methods , then is it possible to execute other synchronized methods simultaneously by other threads?

1069

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Can I learn java without any programming experience?

1044

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