矩阵类

public class Matrix {private String fileName;public Matrix(String fileName) {this.fileName = fileName;}public String getFileName() {return fileName;}
}

图片抽象类

public abstract class Image {protected ImageImp imp;public void setImp(ImageImp imp) {this.imp = imp;}public abstract void parseFile(String fileName);
}

BMP类

public class BMP extends Image {@Overridepublic void parseFile(String fileName) {imp.doPaint(new Matrix(fileName));}
}

GIF类

public class GIF extends Image {@Overridepublic void parseFile(String fileName) {imp.doPaint(new Matrix(fileName));}
}

JPEG类

public class JPEG extends Image {@Overridepublic void parseFile(String fileName) {imp.doPaint(new Matrix(fileName));}
}

图片实现抽象类

public abstract class ImageImp {public abstract void doPaint(Matrix matrix);
}

Window实现类

public class WinImp extends ImageImp {@Overridepublic void doPaint(Matrix matrix) {System.out.println("调用Windows系统的算法绘制像素矩阵："+matrix.getFileName());}
}

Linux实现类

public class LinuxImp extends ImageImp {@Overridepublic void doPaint(Matrix matrix) {System.out.println("调用Linux系统的算法绘制像素矩阵："+matrix.getFileName());}
}

演示类

public class Demo {public static void main(String[] args) {Image image1 = new BMP();ImageImp imageImp1 = new WinImp();image1.setImp(imageImp1);image1.parseFile("demo.bmp");}
}

演示结果