Write files with FileOutPutStream java

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  Java
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  Java
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  Java
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  Java
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  Java
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  Java
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  Java
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  Java
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  Check if char is number java

  Java
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  Given an int variable n that has already been declared and initialized to a positive value, use a do...while loop to print a single line consisting of n asterisks. Use no variables other than n.

  Java