Java中什麽是匿名對象,空參構造方法輸出創建了幾個匿名對象,屬性聲明成static
阿新 • • 發佈:2017-10-23
es2017 ava cit 得到 定義 屬性 自增 alt spa
package com.swift; //使用無參構造方法自動生成對象,序號不斷自增 public class Person { private static int count; //如果在定義類時,使用的是靜態的屬性,則得到的結果是不同的。count生命周期長,與類相同 public int id; public String name; public int age; public String city; public Person() { super(); count++; this.id=count;this.name="NoName"+count; this.age=20; this.city="蜀國"; System.out.println("生產了 "+count+" 個實例化對象");//調用空參構造方法時輸出 } public Person(int id ,String name,int age,String city) { this.id=id; this.name=name; this.age=age; this.city=city; }public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public voidsetAge(int age) { this.age = age; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getInfo() { return "The Person is id=" + id + ", name=" + name + ", age=" + age + ", city=" + city ; } }
Java中什麽是匿名對象,空參構造方法輸出創建了幾個匿名對象,屬性聲明成static