Write down the Valid and Invalid JSP Expressions

Valid:

1. All primitive literals are valid.
2. String literals are allowed.
3. Anything that resolves to Boolean is fine.
4. Object declaration is allowed.
5. Method calls should always result in a value( primitive, String, Boolean).

Invalid:

1. Semicolon should be avoided at the end of the statement.
2. No variable declarations are allowed.
3. Method calls should not result in a void value.