Strings - Study Mode

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[#1] Which of this method of class StringBuffer is used to concatenate the string representation to the end of invoking string?

(A) concat()

(B) append()

(C) join()

(D) concatenate()

Correct Answer

(B) append()

[#2] What is the value returned by function compareTo() if the invoking string is less than the string compared?

(A) zero

(B) value less than zero

(C) value greater than zero

(D) none of the mentioned

Correct Answer

(B) value less than zero

[#3] What is the value returned by function compareTo() if the invoking string is greater than the string compared?

(A) zero

(B) value less than zero

(C) value greater than zero

(D) none of the mentioned

Correct Answer

(C) value greater than zero

[#4] Which of this method of class StringBuffer is used to get the length of the sequence of characters?

(A) length()

(B) capacity()

(C) Length()

(D) Capacity()

Correct Answer

(A) length()

[#5] Which of these method of class String is used to extract a single character from a String object?

(A) CHARAT()

(B) chatat()

(C) charAt()

(D) ChatAt()

Correct Answer

(C) charAt()