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Make a template and define the calling order and method in the template. Different subclasses implement methods with their own characteristics, and then access the calling methods of subclasses when accessing externally.The adapter for the interface is as follows: Sometimes we write an interface with multiple abstract methods, When we write the implementation class for the interface, All methods of the interface must be implemented, This is obviously wasteful at times, Because not all methods are what we need, Sometimes only a few are needed, In order to solve this problem here, we have introduced the adapter mode of the interface. With the help of an abstract class, the abstract class implements the interface and all methods. However, we do not deal with the original interface, but only get in touch with the abstract class, so we write a class, inherit the abstract class and rewrite the methods we need. Take a look at the class diagram:谢徐大人。(2) Ships limited to draft shall fully consider their special conditions and drive with special care.At the Shanghai Microsatellite Engineering Center, Li Qiang also expressed a similar meaning: "We should focus on key areas, strengthen research on major common technologies and key core technologies, strive to make great progress in basic science and technology fields, achieve major breakthroughs in key core technology fields, gather and drive a number of related industrial chain enterprises, and push the manufacturing industry forward to the middle and high end."Conforming to the explosive growth of China's cultural and tourism industry, "Charming China City? The" City Alliance "was formally established. The alliance brings together the participating cities of "Charming China City" to build a cooperative and shared platform for the development of cultural and tourism industries. Ha Xuesheng, director of the program department of CCTV's financial channel, Tang Lin and Mei Xiangrong, producers of CCTV's financial channel "Charming China City", awarded licenses to members, directors and representatives of executive directors of the City Alliance.Use the iptables-restore command to overload rules from the specified file, as follows