Java Error Messages and Solutions

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

You see this error message because of any one of the followings: 1. You misspelled the keyword class (fully lower case) or you did not wri...

Very simple error ‘package system does not exist’- most probably you have used ‘err’ or ‘in’ or ‘out’ field of the ‘System’ class of ‘java....

If you try to access a non static member of a class from a static context, you will see ‘non-static method … cannot be referenced from a sta...

If a method is defined inside another method we may see ‘illegal start of expression’ error message. Remember that, we cannot define a metho...

This error message is shown when the statements are not written in proper place. Most often, mistakenly, we may write the processing task (f...

If a class file does not exist or the class is in such a package which is not in the CLASSPATH but you are trying to run that class, then yo...

We get error message "class [ClassName] is public, should be declared in a file named [ClassName].java" if the file name of the Ja...

'Exception in thread "main" java.lang.NoSuchMethodError: main' is a run time error message. If the main method is not prop...

If we declare a variable in a method more than once than we see ' is already defined'. Find out the variable for which the message ...