学步园

DrawingApp.java

package zxl;


import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class DrawingApp {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ApplicationContext context=new ClassPathXmlApplicationContext("spring.xml");
		Triangle triangle =(Triangle) context.getBean("triangle");
		triangle.draw();
	}

}

Point.java

package zxl;

public class Point {
	private int x;
	private int y;
	
	public int getX() {
		return x;
	}
	public void setX(int x) {
		this.x = x;
	}
	public int getY() {
		return y;
	}
	public void setY(int y) {
		this.y = y;
	}
	
}

Triangle.java

package zxl;

public class Triangle {

	private Point pointA;
	private Point pointB;
	private Point pointC;

	
	public Point getPointA() {
		return pointA;
	}

	public void setPointA(Point pointA) {
		this.pointA = pointA;
	}

	public Point getPointB() {
		return pointB;
	}

	public void setPointB(Point pointB) {
		this.pointB = pointB;
	}

	public Point getPointC() {
		return pointC;
	}

	public void setPointC(Point pointC) {
		this.pointC = pointC;
	}
	
	
	public void draw(){
		System.out.println("point A ("+getPointA().getX()+","+getPointA().getY()+")");
		System.out.println("point B ("+getPointB().getX()+","+getPointB().getY()+")");
		System.out.println("point C ("+getPointC().getX()+","+getPointC().getY()+")");
	}
}

spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">

<beans>
    <bean id="triangle" class="zxl.Triangle" >
        <property name="pointA" ref="zeroPoint" />
        <property name="pointB" ref="point2" />
        <property name="pointC" ref="point3" />
    </bean>
    
    <bean id="zeroPoint" class="zxl.Point" >
    	<property name="x" value="0" />
    	<property name="y" value="0" />
    </bean>
    
    <bean id="point2" class="zxl.Point" >
    	<property name="x" value="-20" />
    	<property name="y" value="0" />
    </bean>
    
    <bean id="point3" class="zxl.Point" >
    	<property name="x" value="20" />
    	<property name="y" value="0" />
    </bean>
    
</beans>