car.java

关于java面向对象系统分析方面的课件

/*
 * s2javaoo.lg.ch02.Car.java
 * 2007-7-23
 * 汽车类
 */
package s2javaoo.lg.ch02;

public class Car {
    private Engine engine = null;
    
    /**
     * @return engine
     */
    public Engine getEngine() {
        return engine;
    }
    
    /**
     * @param engine 要设置的 engine
     */
    public void setEngine(Engine engine) {
        this.engine = engine;
    }
    
    /**
     * 汽车跑
     */    
    public void run() {
        if(engine != null) {
            System.out.println("汽车在跑");
        } else {
            System.out.println("汽车发动不了");
        }
    }
}