Bridge模式解耦,其实施的定义。它是一种结构模式。本模式涉及充当桥的接口。这座桥使具体的类独立的接口实施者类。
Bridge模式解耦,其实施的定义。它是一种结构模式。
本模式涉及充当桥的接口。这座桥使具体的类独立的接口实施者类。
这两种类型的类可以在不影响彼此被改变。
实例:
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interface Printer { public void print( int radius, int x, int y); } //from www.j a v a2 s . c om class ColorPrinter implements Printer { @Override public void print( int radius, int x, int y) { System.out.println( "Color: " + radius + ", x: " +x+ ", " + y + "]" ); } } class BlackPrinter implements Printer { @Override public void print( int radius, int x, int y) { System.out.println( "Black: " + radius + ", x: " +x+ ", " + y + "]" ); } } abstract class Shape { protected Printer print; protected Shape(Printer p){ this .print = p; } public abstract void draw(); } class Circle extends Shape { private int x, y, radius; public Circle( int x, int y, int radius, Printer draw) { super (draw); this .x = x; this .y = y; this .radius = radius; } public void draw() { print.print(radius,x,y); } } public class Main { public static void main(String[] args) { Shape redCircle = new Circle( 100 , 100 , 10 , new ColorPrinter()); Shape blackCircle = new Circle( 100 , 100 , 10 , new BlackPrinter()); redCircle.draw(); blackCircle.draw(); } } |
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