Every
Java class file contains a version number that specifies the version
of the class file format. This error is thrown when the Java Virtual
Machine attempts to read a class file with a version number it does
not support.
Figure 10-70. java.lang.UnsupportedClassVersionError
public class
UnsupportedClassVersionError extends ClassFormatError {
// Public Constructors
public
UnsupportedClassVersionError ( );
public
UnsupportedClassVersionError (String
s );
}