Is Java case-sensitive?

Is Java case-sensitive?

• A. Yes
• B. No
• C. Sometimes
• D. Not at all

Answer: (A)

Case sensitivity means uppercase and lowercase letters are treated as different characters. Java is case-sensitive, so all identifiers (variable names, method names, class names) and keywords must be written with exact case. Keywords like class and public must be in lowercase; writing Class or PUBLIC would be seen as a different identifier or cause an error if it isn’t defined. This distinction allows you to have many distinct names (e.g., myVar, MyVar, MYVAR are all different). For string value comparisons, use equals to require exact matches or equalsIgnoreCase to ignore case, but the language itself distinguishes case for code elements. So, the statement that Java is case-sensitive is correct.

Case sensitivity means uppercase and lowercase letters are treated as different characters. Java is case-sensitive, so all identifiers (variable names, method names, class names) and keywords must be written with exact case. Keywords like class and public must be in lowercase; writing Class or PUBLIC would be seen as a different identifier or cause an error if it isn’t defined. This distinction allows you to have many distinct names (e.g., myVar, MyVar, MYVAR are all different). For string value comparisons, use equals to require exact matches or equalsIgnoreCase to ignore case, but the language itself distinguishes case for code elements. So, the statement that Java is case-sensitive is correct.