Design patterns have evolved to solve problems often encountered in software applications. The factory method design pattern and the abstract factory design pattern are both creational patterns.

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public interface Trace { // turn on and off debugging public void setDebug( boolean debug ); // write out a debug message public void debug( String message ...

This article discusses the strength and weakness of applying Dependency Injection (DI) with a variant of Abstract Factory design pattern. This approach is especially suitable for such scenarios as ...