In Java, which one will be used for comparing whether the two string object str 1 and str? are same

A str1=str2
B strl.equalsingnore Case (strl2)
C strl==str2
D All of the above

Correct Answer: All of the above

String can be compared by using in many ways. Such as if(str 1.equals(str2)); if (str 1.equals Ignore case (str 2) if(str 1.compare to (str 2) = = 0), if (str 1 = = str 2) etc.
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