初学者，求这题做法

[qq_19366801]

定一个接口Pen，里面有getType()方法，定义一个类铅笔pencil，定义一个类钢笔FountainPen，定义一个纸的接口Paper，里面有getSize()方法，定义A4paper类和B5paper类，定义一个文章类Articlescrap，如何让他组合笔和纸进行文章的书写

[千里送人头]

楼主,不建议你这么做题,建议先找一些视频看一下,你会发现,这些直接就会 了

[bcsflilong]

public interface Pen{
		String getType();
	}
	public interface Paper{
		String getSize();
	}
	public static class Pencil implements Pen{
		
		@Override
		public String getType() {
			// TODO Auto-generated method stub
			return "铅笔";
		}
		
	}
	public static class FountainPen implements Pen{

		@Override
		public String getType() {
			// TODO Auto-generated method stub
			return "钢笔";
		}
		
	}
	
	public static class A4paper implements Paper{

		@Override
		public String getSize() {
			// TODO Auto-generated method stub
			return "A4";
		}
		
	}
	
	public static class B5paper implements Paper{

		@Override
		public String getSize() {
			// TODO Auto-generated method stub
			return "B5";
		}
		
	}
	public static class 	Articlescrap{
		private Pen pen;
		private Paper paper;
		public Pen getPen() {
			return pen;
		}
		public void setPen(Pen pen) {
			this.pen = pen;
		}
		public Paper getPaper() {
			return paper;
		}
		public void setPaper(Paper paper) {
			this.paper = paper;
		}
		
		public Articlescrap(Pen pen,Paper paper){
			this.paper=paper;
			this.pen=pen;
		}
		public void write() {
			System.out.println("用"+pen.getType()+"配合"+paper.getSize()+"纸写小说");
		}
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Articlescrap articlescrap1=new Articlescrap(new Pencil(), new A4paper());
		articlescrap1.write();
		
		Articlescrap articlescrap2=new Articlescrap(new FountainPen(), new B5paper());
		articlescrap2.write();
	}

[qq_19366801]

引用 1 楼 千里送人头 的回复：

楼主,不建议你这么做题,建议先找一些视频看一下,你会发现,这些直接就会 了

谢谢