Java compiler error messages

The following descriptions pertain to the Java compiler and its error messages:

‘;’ expected.	The given line of code, or the line of code directly before it, is missing a semicolon.
Invalid type expression.	The given line of code, or the line of code directly before it, is probably missing a semicolon.
Identifier expected.	When declaring a data member for a class or a variable within a method, both the type of the data member and a name must be provided.
Return required at end of ________.	Since the method in question does not return void, it must return an object or value, or throw an exception, in every case.
‘return’ without value from ________.	Since the method in question does not return void, it must return an object or value, or throw an exception, in every case.
Invalid method declaration; return type required.	All methods must have a return value. If a method is not to return a value or object, it must return void.
Class ________ must be declared abstract; it does not define ________ from _________.	a. The signature of the given method is wrong; either something is misspelled or incorrect. b. The given method, required by the given interface or abstract class, is missing.