class Person
{
private String name="unknown";
private int age = -1;
public Person(String name)
{
name = this.name;
System.out.println(name);
}
}
class TestPerson
{
public static void main(String[] args)
{
Person p2=new Person("Jack");
}
}将constructor的第一条语句修改为:
name = this.name; 时候结果为unknown
当this.name = name; 时候结果为jack
当name = name; 时候结果为jack
都是对的但是为什么,当this.name = this.name; 时候结果为jack,为什么,不太明白,请高手指点?
{
private String name="unknown";
private int age = -1;
public Person(String name)
{
name = this.name;
System.out.println(name);
}
}
class TestPerson
{
public static void main(String[] args)
{
Person p2=new Person("Jack");
}
}将constructor的第一条语句修改为:
name = this.name; 时候结果为unknown
当this.name = name; 时候结果为jack
当name = name; 时候结果为jack
都是对的但是为什么,当this.name = this.name; 时候结果为jack,为什么,不太明白,请高手指点?
而Person(String name)中name的值为new Person("Jack");中的"Jack"改为
public Person(String n)
{
this.name = this.name;
System.out.println(n);
}这样更容易理解