Q11
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
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
The trim() method in Java is used to remove whitespace characters from the beginning and end of a string.It does not remove spaces or whitespace characters that are in the middle of the string.
For example:
String s = " Hello World ";
System.out.println(s.trim()); // Output: "Hello World"
Therefore, the correct purpose of the trim() method is to remove leading and trailing whitespace only, not all spaces, not concatenation, and not substring extraction.