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import java.util.Scanner;
class MyCalculator {
public long power(long n, long p) throws Exception{
if(n<0 || p<0)
throw new Exception("n or p should not be negative.");
else if(n<0 && p<0)
throw new Exception("n and p should not be negative.");
else if(n==0 && p==0)
throw new Exception("n and p should not be zero.");
else
return (long)Math.pow(n,p);
}
}
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Java Exception Handling
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import java.util.Scanner; class MyCalculator { public long power(long n, long p) throws Exception{ if(n<0 || p<0) throw new Exception("n or p should not be negative."); else if(n<0 && p<0) throw new Exception("n and p should not be negative."); else if(n==0 && p==0) throw new Exception("n and p should not be zero."); else return (long)Math.pow(n,p);
}