The Object.hashCode() method returns a number that is effectively random. This number is also implementation- and instance-dependent. This has a couple consequences: 1 – The order of iteration for elements
The environment of a SQL plus session, like linesize, pagesize, etc., can be permanently set according to one’s own needs with the help of login.sql file. The settings can be
The Collections class provides static APIs to generate a read-only or unmodifiable collection, list, set, or map from the specified entity. For instance, if you are sure that the ArrayList
As you know by now, the commonly used collection classes, such as java.util.ArrayList, are not synchronized. However, if there’s a chance that two threads could be altering a collection concurrently,
The C preprocessor provides for conditional compilation in instances where large areas of text are ignored and stripped out, regardless of whether a given preprocessor constant was defined. For example:
The size of the database is the total size of the datafiles that make up the tablespaces of the database. These details are found in the dba_extents view. Type the
Suppose you want to pass an object to a method and also want to allocate the object into that method. If you pass the object as it is, it will