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[英]Mapstruct from string to nested object for multiple fields with the same type
[英]Java - Multiple fields of same data type in an object
一堂课后,我正在练习继承和合成,并决定编写一个小程序来尝试一些事情,偶然发现一个问题,我将展示我的代码,它有4个类,其中包括Main.java:
public class Main {
public static void main(String[] args) {
Person person1 = new Person("Person1", 170); //"Name", height
Person person2 = new Person("Person2", 200); //"Name", height
Bed bed1 = new Bed(160);
Bedroom bedroom1 = new Bedroom(bed1, person1);
bedroom1.sleep();
public class Bedroom {
private Bed theBed;
private Person thePerson;
//Constructors
public void sleep() {
if(thePerson.getHeight() > 180) {
System.out.println("You are too tall to sleep on this bed.");
} else {
theBed.sleepOnBed();
}
}
//Getters
public class Bed {
private Person thePerson;
private int height;
//Constructor
public void sleepOnBed() {
System.out.println("You sleep on the bed.");
}
//Getters
public class Person {
private String name;
private int height;
//Constructor
//Getters
我想要做的是在Main.java的bedroom1
对象中同时使用person1
和person2
,然后在bedroom1
对象上测试sleep()
方法,但我只是想不出一种使用方法。
我尝试过类似的事情:
public class Bedroom {
private Bed theBed;
private Person thePerson1;
private Person thePerson2;
public Bedroom(Bed theBed, Person thePerson1, Person thePerson2) {
this.theBed = theBed;
this.thePerson1 = thePerson1;
this.thePerson2 = thePerson2;
}
public class Main {
public static void main(String[] args) {
Person person1 = new Person("Person1", 170);
Person person2 = new Person("Person2", 200);
Bed bed1 = new Bed(160);
Bedroom bedroom1 = new Bedroom(bed1, person1, person2);
bedroom1.sleep();
但是,正如您可能理解的那样,这不会导致任何结果。 我太累了,无法在线找到任何潜在客户,可能是因为我使用了错误的关键字idk。
我希望我的程序采用多个数据类型为Person
对象,并查看它们的高度是否符合在床上睡觉的条件,仅此而已。
您可以在bedroom类中将Person替换为Person对象列表,然后在sleep方法中遍历数组。
public Bedroom(Bed bed1, List<Person> aListOfPersons)
{
this.persons = aListOfPersons;
}
public void sleep()
{
for(Person aPerson : persons)
{
//check for each aPerson if he fits in the bed
}
}
欢迎使用Stackoverflow,祝您编程愉快!
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