Computer Applications
Which of the following returns a value greater than or equal to 0?
Java String Handling
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Answer
length()
Reason — Analyzing the given options:
1. lastIndexOf(char ch):
- Returns the last index of the specified character in the string.
- If the character is not found, it returns
-1, which can be less than0. - Not always greater than or equal to 0.
2. length():
- Returns the number of characters in the string.
- This is always greater than or equal to 0, as an empty string has a length of
0.
3. compareTo(String s):
- Compares two strings lexicographically.
- Can return negative, 0, or positive values, depending on the comparison result.
- Not always greater than or equal to 0.
4. equalsIgnoreCase(String s):
- Returns a boolean value (
trueorfalse), not a numeric value.
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