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Exception Handling:

• In the validateSyntax method, itcatch a JSQLParserException but do not handle it further. Consider throwing a custom exception for better handling of exceptional situations by the calling code.

More Comprehensive Syntax Check:

• The code mainly focuses on matching keywords and patterns, but for more complex syntax structures, such as JOIN operations, a more comprehensive check may be necessary.

SQL Syntax Validation Method:

• In the validateSyntax method, when a JSQLParserException occurs, although it outputs an error message, the method still returns statement.toString(), which could lead to a NullPointerException. It might consider returning an appropriate error message or throwing an exception instead of returning potentially null statement.toString() after catching the exception.

Table Name Check:

• In the checkTableName method, the parameter should be an SQL statement instead of a table name. When calling this method, it pass an SQL statement as a parameter, which could be confusing. Consider calling this method in the validateSafety method, passing the extracted table name from the SQL statement.

Table Name Length Check:

• The table name length check hardcodes a value (255). This value should be configurable for future changes.

Disable DROP and TRUNCATE:

• In the checkDropAndTruncateStatement method, it commented out //Forbidden but didn't provide specific handling logic. itmay need to add logic here to prohibit the execution of DROP and TRUNCATE statements, such as throwing an exception or outputting an error message.

Static Method for Table Name Check:

• The checkTableName method is static but is called by instance methods in the class. Consider converting checkTableName to a non-static method or declaring it as static and using SQLValidator.checkTableName when calling it.

Sensitive Information Check:

• In the checkSensitiveInfo method, it use the checkKeywords method, but it may need more complex logic to ensure that complete words are detected instead of partial matches.