package treeSet;

import java.util.Objects;

public class Item implements Comparable<Item>{
	private String description;
	private int partNumber;
	
	public Item(String description,int partNumber){
		this.description=description;
		this.partNumber=partNumber;
	}
	
	public String getDescription(){
		return this.description;
	}
	public String toString(){
		return "[description="+description+", partNumber="+partNumber+"]";
	}
	
	//equals方法---------------------------------------------------
	public boolean equals(Object otherObject){
		if(this==otherObject) return true;
		if(otherObject==null) return false;
		if(getClass()!=otherObject.getClass()) return false;
		Item other=(Item) otherObject;
		return Objects.equals(description,other.description)&&partNumber==other.partNumber;
	}
	
	public int hashCode(){
		//Objects类生成hashCode
		return Objects.hash(description,partNumber);
	}
	
	@Override
	public int compareTo(Item other) {
		return Integer.compare(partNumber, other.partNumber);
	}

}