what is the preferred way to do a singleton in java?could you do it the same way in C++? give a small a working code example(should be 2-3 brief files).
which pattern(s) would be used for rental car system from which clients could order multiple types of cars and different features to a specific order? certain car types already exist, but new cars with new features are always being added and we do not want to modify the ordering interface.
what is the preferred way to do a singleton in java
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