how we can create packages in java?

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Does list maintain insertion order java?

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1).what is the difference between below examples String s="vijay"; String s=new String("vijay");

12 Answers   Mascon, Satyam, TCS,

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Why singleton is not thread safe?

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How to optimize the javac output?

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What flag up means?

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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....

4 Answers   Quinnox,

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Class A extends Class B but Class A also inherit Super Class Object so it is multiple inheritence give reason in support of your answer

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Can java list contain duplicates?

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Explain the significance of listiterator.

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Why we use set in java?

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What is a line break?

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