What are syntax errors?

Syntax errors occur when the rules of the programming language are not adhered to. In Java programming, syntax defines the set of rules that determines how code must be written for the compiler to understand and execute it properly. For example, failing to include a semicolon at the end of a statement, using incorrect function names, or not properly closing brackets can all lead to syntax errors.

When such errors are present, the compiler will reject the code during the compilation process, meaning that the program will not run until all syntax errors are corrected. Unlike logic errors, which may allow the program to run but produce incorrect results, syntax errors prevent the program from executing at all. This distinction emphasizes the importance of writing well-structured code according to the language's grammatical rules.

In contrast, the other types of errors mentioned relate to different aspects of programming. For instance, issues related to data types or execution speed pertain to other categories and do not define syntax errors.