Is it possible to write a regular expression to check if string is a number?


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More Core Java Interview Questions

What are the principle concepts of oops?

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Why does the integer quotient -0/3 yield 0, but the double quotient -0.0/3.0 yields – 0.0?

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what is inner class in java?

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Is java a virus?

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Are private methods final?

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Difference between prefix and postfix forms of the ++operator?

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Why put method is idempotent?

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what is the difference between statis block and static variable

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Is 0 true or is 1 true?

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Why java is called not pure object oriented language?

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