Question: plz some one can explain this to me this if and the operators, why are they using and for what purpose? if (!('.equals(str.substring(0,1))) || !(.equals(str.substring(str.length()

plz some one can explain this to me this if and

plz some one can explain this to me this if and the operators, why are they using and for what purpose?

if (!("'.equals(str.substring(0,1))) || !("".equals(str.substring(str.length() - 1)))) { for (int i = 0; i

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