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用来存放java学习存放的代码
public class Person { private String name; private boolean gender; private int age; private int id; public Person(){ System.out.println("This is constructor"); System.out.println(name + "name ,age,genser,id"); } }
public class Person { private String name; private int age; private boolean gender; private int id; public Person(){ System.out.println("This is constructor"); System.out.printf("%s,%d,%s,%d" ,name,age,gender,id); } public Person(String name, int age, boolean gender, int id){ this.name = name; this.gender = gender; this.age = age; this.id = id; } public static void main(String[] ages){ Person p = new Person(); } }
package hello; public class Fruit { private String name; @override public String toString(){ return "Fruit [name-" + name + "]" +"\n" +super.toString(); } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; Fruit other = (Fruit) obj; if (name == null) { if (other.name != null) return false; } else if (!name.equalsIgnoreCase(other.name)) return false;
package hello; public class Shopping { public static void main(String[] args) { // TODO Auto-generated method stub } } class Allgood{ //所有商品 } class Goods{ private String name; //商品名 private double price; //价格 } class ShoppingCart extends Goods{ class Item{ private int count;//商品数量 private Goods goods; public Item(int count, Goods goods){ super(); this.count = count; this.goods = goods; } } }
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