背包算法的实现

实现了将一些数据构成的一个背包问题做简单的实现，但不知道有没有理解对，如有错误，还请指出。

物品类的javabean

package main;

public class goods {
	private int weight;
	private int value;
	private int id;
	
	public goods(){
		this.id=0;//物品的编号
		this.weight=0;//物品的重量
		this.value=0;//物品的价值
	}
	public void setgoods(goods g){
		this.weight=g.weight;
		this.id=g.id;
		this.value=g.value;
	}
	public int getid(){
		return this.id;
	}
	public int getweight(){
		return this.weight;
	}
	public int getvalue(){
		return this.value;
	}
	public void setid(int id){
		this.id=id;
	}
	public void setweight(int weight){
		this.weight=weight;
	}
	public void setvalue(int value){
		this.value=value;
	}

}

package main;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
imp