Mureinik questions

Mureinik answers

• Should all classes have a .equals and .hashcode method?
• Why need for using JDBC write Class.forName(...) for each connection?
• Get min and max integer value containing X number of digits
• Create Table Through JOIN SQL
• Initialize 2d list in Java
• PostgreSQL asking for 'group by' clause in where, when sending parameters
• Writing a comparable for an Arrays.Sort of Points
• MySQL command line not doing anything
• Apache Commons Exec Problems Handling Regex Argument?
• Best data structure for searching through a collection