Final answer:
An identifier in Java must begin with a letter, underscore, or a dollar sign and include only letters, numbers, and the underscore; no punctuation characters or spaces are allowed.
Step-by-step explanation:
The statement is true. In Java, an identifier is a name used to identify a variable, method, class, or other programming element. According to the Java language rules, an identifier must begin with a letter, underscore (_), or dollar sign ($). It cannot begin with a number or any other punctuation character. After the first character, an identifier can include letters, numbers, and underscores, but no other special characters, punctuation, or spaces are allowed.
Vanity pages are web pages with personal or biographic information where individuals can create personal profiles and share personal information, images, and multimedia with others.
The web pages with personal or biographic information are called vanity pages. Vanity pages are a type of web page that allows individuals to create personal profiles and share personal information, images, and multimedia with others. These pages are often used for self-promotion or self-expression.