Java Error Messages and Solutions

The full error message may be : java.sql.SQLException: Access denied for user 'root'@'localhost' (using password : YES) ...

Trying to connect to a MySQL server from Java? But seeing the error "Unknown database"? The reason is that the database does not...

This error message may include the following text also: "The last packet sent successfully to the server was 0 milliseconds ago. The ...

This error occurs when the required JDBC driver file is not in the CLASSPATH. Also, if the driver name is not correct ClassNotFoundException...

The error message is very clear actually: i) We can call super in the constructor of a subclass ii) If we call super in the constructor o...

It's a very common runtime error message or exception we face when we use array wrongly. Very specifically this exception is thrown to ...

'array dimension missing' is shown when the array size is not specified while allocating memory for the array or creating an array. ...

You may see this error for writing wrong expression to initialize an array. See the code below: int data={42,15,27,20,19}; If you compile...

1. Sometimes we may get the following error message in an 'if' (selection) structure. incompatible types found : int required: bo...

public class Person extends Employee { private String firstName; private String lastName; public Person(String firstName,String lastName...