What is the purpose of the trim() method of a String object in Java?
A. To remove all spaces from the string
B. To concatenate two strings
C. To extract a substring from the string
D. To remove leading and trailing whitespace
Answer: Option D
A. To remove all spaces from the string
B. To concatenate two strings
C. To extract a substring from the string
D. To remove leading and trailing whitespace
Answer: Option D
In Java, which class is used to represent a sequence of characters as a string?
A. String
B. StringBuilder
C. StringSequence
D. StringArray
What is the correct way to create a new empty String object in Java?
A. String emptyString = "";
B. String emptyString = new String();
C. String emptyString = " ";
D. String emptyString = null;
E. Both A and B
Which of the following methods is used to compare two strings for equality in Java?
A. equals()
B. compareTo()
C. equalsIgnoreCase()
D. compare()
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