哈希泄露与java配置有关问题

哈希泄露与java配置问题

package com.itcast.simulate;

import java.io.FileInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Properties;

public class ReflectTest {
	
	public static void main(String[] args) throws Exception{
		//用完整的路径不是硬编码,而是运算出来的
		//eclipse把非java文件搬到class下面去了
		//InputStream ips=new FileInputStream("config.properties");
		//第二种方式classpath,以后面临不会给src
//		InputStream ips=ReflectTest.class.getClassLoader().getResourceAsStream("config.properties");
		//其实class里面也提供了方法,如下
		InputStream ips=ReflectTest.class.getResourceAsStream("/config.properties");
		Properties props=new Properties();
		props.load(ips);
		ips.close();
		String className=props.getProperty("className");
		
		Collection collection=(Collection)Class.forName(className).newInstance();
		Dog dog1=new Dog(1,"jude");
		Dog dog2=new Dog(1,"jude");
		Dog dog3=new Dog(3,"ted");
		Dog dog4=new Dog(4,"maodan");
		collection.add(dog1);
		collection.add(dog2);
		collection.add(dog3);
		collection.add(dog4);
		collection.add(dog4);
		
//		System.out.println(collection.remove(dog1));
//		System.out.println(collection.remove(dog2));
		System.out.println(collection.size());
		System.out.println("dog1==dog2吗?--->>"+(dog1==dog2));
		System.out.println("dog1 eques dog2吗?--->>"+(dog1.equals(dog2)));
		
	}

}

package com.itcast.simulate;

public class Dog {
	private int id;
	private String name;
	public int getId() {
		return id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Dog(int id, String name) {
		this.id = id;
		this.name = name;
	}
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + id;
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		return result;
	}
	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		final Dog other = (Dog) obj;
		if (id != other.id)
			return false;
		if (name == null) {
			if (other.name != null)
				return false;
		} else if (!name.equals(other.name))
			return false;
		return true;
	}
	public void setId(int id) {
		this.id = id;
	}
	
	
	
	

}