20 Read this piece of code carefully if(" String ".trim() == "String") System.out.println("Equal"); else System.out.println("Not Equal");

  1. a. the code will compile an print "Equal".

  2. b. the code will compile an print "Not Equal".

  3. c. the code will cause a compiler error

  4. d.


Correct Option: A

AI Explanation

To answer this question, let's go through each option and analyze the code snippet provided:

Option A) The code will compile and print "Equal". In the given code snippet, the trim() method is used to remove leading and trailing whitespace from the string " String ". The trim() method returns a new string with the whitespace removed.

However, when comparing strings, the == operator checks for reference equality, not value equality. In Java, the == operator compares the memory addresses of the objects being compared.

In this case, the string " String " is not the same object as the string "String", even though they have the same value after trimming. Therefore, the == comparison will evaluate to false.

So, the code will not print "Equal".

Option B) The code will compile and print "Not Equal". As explained in Option A, the == comparison will evaluate to false because the strings being compared are different objects. Therefore, the code will print "Not Equal".

Option C) The code will cause a compiler error. There is no compilation error in the given code. The code is syntactically correct, and there are no issues that would cause a compiler error.

Option D) (No option provided) This is not a valid option.

The correct answer is A) The code will compile and print "Equal".

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