Java实验（头歌）-Java面向对象-类与对象

第一关

主函数：

    public static void main(String[] args) {
        /********** Begin **********/
        //创建Dog对象
        //设置Dog对象的属性
        Dog wuhuarou = new Dog("五花肉","棕色","阿拉斯加");

        //输出小狗的属性
        System.out.println("名字：" + wuhuarou.getName()   + "，毛色：" + wuhuarou.getColor()   + "，品种：" + wuhuarou.getVariety() );

        //调用方法
        wuhuarou.eat();
        System.out.println();
        wuhuarou.run();

        /********** End **********/

    }

其他类

class Dog
//在这里定义Dog类
{

 /********** Begin **********/
 String name;
 String color;
 String variety;
 public Dog(String name,String color,String variety)
 {
     this.name = name;
     this.color = color;
     this.variety = variety;
 }
 public Dog(){}
 public void eat()
 {
     System.out.print("啃骨头");
 }
 public void run()
 {
     System.out.print("叼着骨头跑");
 }
 /********** End **********/
 public String getName() {
     return name;
 }

 public void setName(String name) {
     this.name = name;
 }

 public String getColor() {
     return color;
 }

 public void setColor(String color) {
     this.color = color;
 }

 public String getVariety() {
     return variety;
 }

 public void setVariety(String variety) {
     this.variety = variety;
 }
}

第二关

主函数

public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String name = sc.next();
        String sex = sc.next();
        /********** Begin **********/
        //分别使用两种构造器来创建Person对象
        Person person = new Person();
        Person person2 = new Person(name,sex);

        /********** End **********/

    }

其他

    
    
class Person
{
    //创建Person对象，并创建两种构造方法
/********** Begin **********/
String name;
String sex;
    public Person()
    {
        System.out.println("一个人被创建了");
    }
    public Person(String name, String sex) {
        this.name = name;
        this.sex = sex;
        System.out.println("姓名："+getName()+"，性别："+getSex()+"，被创建了");
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }
/********** End **********/
}

第三关

第四关

主函数

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String name = sc.next();
        int age = sc.nextInt();
        String sex = sc.next();
        Person p = new Person(name,age,sex);
        p.display();
    }

class Person{
    String name = "张三";
    int age = 18;
    String sex = "男";
    /********** Begin **********/

    public Person(String name,int age,String sex){
        this(age);
        this.name = name;
        this.sex = sex;
    }

    public Person(int age){
        this.age = age;
    }

    public void display(){

        System.out.println("name：" +name);
        System.out.println("age：" + age);
        System.out.println("sex：" + sex);
    }
    /********** End **********/
}

第五关

注意这个题是分文件编写的
还有就是第一次可能出现问题（多半是网络问题），再试一次

/********** Begin **********/
//在这里添加包名  step4
package step4;
//创建类 添加属性和方法
public class WuMingFen {
    String theMa ;
    int quantity ;
    boolean likeSoup ;

    public WuMingFen() {
        theMa = "酸辣";
        quantity =2;
        likeSoup =true;
    }
    public WuMingFen(String theMa,int quantity)
    {
        this.theMa = theMa;
        this.quantity = quantity;
        likeSoup = false;
    }
    public WuMingFen(String theMa, int quantity, boolean likeSoup) {
        this.theMa = theMa;
        this.quantity = quantity;
        this.likeSoup = likeSoup;
    }

    public String getTheMa() {
        return theMa;
    }

    public void setTheMa(String theMa) {
        this.theMa = theMa;
    }

    public int getQuantity() {
        return quantity;
    }

    public void setQuantity(int quantity) {
        this.quantity = quantity;
    }

    public boolean isLikeSoup() {
        return likeSoup;
    }

    public void setLikeSoup(boolean likeSoup) {
        this.likeSoup = likeSoup;
    }

    public void check()
    {
        System.out.println("面码：" +getTheMa()+ "，粉的份量："+getQuantity()+"两，是否带汤："+likeSoup);
    }
}

public class Test {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String theMa = sc.next();
        int quantity = sc.nextInt();
        boolean likeSoup = sc.nextBoolean();
        /********** Begin **********/
        //使用三个参数的构造方法创建WuMingFen对象  取名 f1
        WuMingFen f1 = new WuMingFen(theMa,quantity,likeSoup);
        //使用两个参数的构造方法创建WuMingFen对象  取名 f2
        WuMingFen f2 = new WuMingFen(theMa,quantity);
        //使用无参构造方法创建WuMingFen对象  取名 f3
        WuMingFen f3 = new WuMingFen();
        //分别调用三个类的 check方法
        f1.check();
        f2.check();
        f3.check();

        /********** End **********/
    }
}

第六关

public class Test {
    /********** Begin **********/
    static String name = "楚留香";
    static
    {
        System.out.println("hello educoder");
    }
    public static void main(String[] args) {
        System.out.println("我叫" + name);
        study();
    }

    public static void study(){
        System.out.println("我喜欢在educoder上学习java");
    }
    /********** End **********/
}

第七关