How is string immutable in java?

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Explain treeset?

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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??

0 Answers   JPMorgan Chase,

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What is a linkedhashmap java?

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What is the reason that multiple inheritance is not possible in java??

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Write program to print Hello World and print each character address in that string and print how many times each character is in that string? Ex: H: 0 & 1 e:1 & 1 l :2,3,8 & 3 o:4,6 & 2 w:5 & 1 r: 7 & 1 d 9 & 1

7 Answers   Huawei, IBM,

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what is the output ? Math.floor(-2.1) a)2 b)-2 c)-3.0 d)0

4 Answers   Accenture,

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how to convert Java project into Maven ?

0 Answers   Infosys,

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What is final keyword?

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how a programmer confirms that the data submitted has been succesfully inserted into the database(either oracle or my sql).. How a programmer confirm if there is any problem with the program he wrote for insertion... ANS:--- >executeupdate method is having boolean return type, if anything goes wrong in data insertion or data updation, it would return false. otherwise, if it successfully inserts data into the database, it would return true NOW HOW TO I CHECK IN MY DURING EXECUTION WHETHER IT RETURNS TRUE OR FALSE... WELL IT WILL DISPLAY ANY MESSAGE OR NOT

0 Answers   Google,

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how we can create packages in java?

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What is t in parametric equations?

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