Question

在Java中创建具有多个构造函数的新对象时，它基本上是按顺序排列的吗？例如，如果你有一个包含多个int的构造函数怎么办？或者如果你想跳过构造函数参数怎么办？它会执行吗？

Answer 1

每个构造函数都独立于其他构造函数。构建对象的构造函数是在new运算符之后调用的构造函数。

Answer 2

    which constructor to call depends upon arguments you pass, for example lets consider following class:

    public class Animal
    {
    String name;
    String type;
    Boolean carnivorous;

    Animal(String name)
    {
    this.name = name;
    }

    Animal(String name, String Type)
    {
    this.type = type;
    this.name = name;
    }
    }

    so if you pass name and type Animal(String name, String Type) will be called , or if you pass only name then Animal(String name) will be called. 
Also make note that if you define your own constructor then you override no-argument default constructor, so if you need that too along with your custom constructors then define it simply as
  Animal();

Java中的多个构造函数，

2 个答案: