面向对象封装内存布局，成员变量，成员方法，参数和返回值

面向对象封装内存布局，成员变量，成员方法，参数和返回值

public class Car {//面向对象编程，不是面向过程编程
     //成员变量
    //汽车品牌
    String type;
    //汽车颜色
    String color;
    //汽车长度
    long length;
    //成员方法
    public void run(int gasoline){//gasoline是形式参数，形参可以有多个。用英文逗号隔开
        if (gasoline == 92){
            System.out.println("您加了92号汽油，汽车跑的很猛！");
        }else if (gasoline == 95){
            System.out.println("您加了95号汽油，您的汽车快飞起来了！");
        }else {
            System.out.println("您加的是水吧，您的汽车趴窝了！");
        }

    }
    public boolean start(){
        //随机生成一个0-1的double数字
        double random = Math.random();
        if (random > 0.8){
            System.out.println("车子正常启动！");
            return true;
        }else {
            System.out.println("车子坏了！");
            return false;
        }
    }

    public static void main(String[] args) {
        Car baoma = new Car();
        baoma.color = "red";
        baoma.length = 4518;
        baoma.type  = "baoma";

        Car benchi = new Car();
        benchi.color = "white";
        benchi.length = 4000;
        benchi.type  = "benchi";

        Car[] cars = {benchi,baoma};

        for (int i = 0; i < cars.length; i++) {
            System.out.println(cars[i].color+" "+cars[i].type+" "+cars[i].length);
        }


        benchi.run(95);
        boolean f = baoma.start();

        if (f){
            System.out.println("去秋名山飙车！");
        }else {
            System.out.println("去修理厂修车！");
        }
    }
}

white benchi 4000
red baoma 4518
您加了95号汽油，您的汽车快飞起来了！
车子正常启动！
去秋名山飙车！

Process finished with exit code 0