diff --git a/src/src_houduan/domain/Example.java b/src/src_houduan/domain/Example.java
deleted file mode 100644
index 1a03d6e..0000000
--- a/src/src_houduan/domain/Example.java
+++ /dev/null
@@ -1,153 +0,0 @@
-package domain;
-
-/**
- * @author laoyingyong
- * @date: 2020-02-05 13:28
- */
-public  class Example implements Comparable<Example>
-{
-    private Integer id;
-    private String name;
-    private String type;
-    private String source;
-    private Double multiple;
-    private Integer distance;
-    private String toxicity;
-    private String danger;
-    private String stability;
-    private String solubility;
-    private String volatility;
-    private String technology;
-
-    private Double sim;
-
-    public Double getSim() {
-        return sim;
-    }
-
-    public void setSim(Double sim) {
-        this.sim = sim;
-    }
-
-    public Integer getId() {
-        return id;
-    }
-
-    public void setId(Integer id) {
-        this.id = id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public String getType() {
-        return type;
-    }
-
-    public void setType(String type) {
-        this.type = type;
-    }
-
-    public String getSource() {
-        return source;
-    }
-
-    public void setSource(String source) {
-        this.source = source;
-    }
-
-    public Double getMultiple() {
-        return multiple;
-    }
-
-    public void setMultiple(Double multiple) {
-        this.multiple = multiple;
-    }
-
-    public Integer getDistance() {
-        return distance;
-    }
-
-    public void setDistance(Integer distance) {
-        this.distance = distance;
-    }
-
-    public String getToxicity() {
-        return toxicity;
-    }
-
-    public void setToxicity(String toxicity) {
-        this.toxicity = toxicity;
-    }
-
-    public String getDanger() {
-        return danger;
-    }
-
-    public void setDanger(String danger) {
-        this.danger = danger;
-    }
-
-    public String getStability() {
-        return stability;
-    }
-
-    public void setStability(String stability) {
-        this.stability = stability;
-    }
-
-    public String getSolubility() {
-        return solubility;
-    }
-
-    public void setSolubility(String solubility) {
-        this.solubility = solubility;
-    }
-
-    public String getVolatility() {
-        return volatility;
-    }
-
-    public void setVolatility(String volatility) {
-        this.volatility = volatility;
-    }
-
-    public String getTechnology() {
-        return technology;
-    }
-
-    public void setTechnology(String technology) {
-        this.technology = technology;
-    }
-
-    @Override
-    public String toString() {
-        return "Example{" +
-                "id=" + id +
-                ", name='" + name + '\'' +
-                ", type='" + type + '\'' +
-                ", source='" + source + '\'' +
-                ", multiple=" + multiple +
-                ", distance=" + distance +
-                ", toxicity='" + toxicity + '\'' +
-                ", danger='" + danger + '\'' +
-                ", stability='" + stability + '\'' +
-                ", solubility='" + solubility + '\'' +
-                ", volatility='" + volatility + '\'' +
-                ", technology='" + technology + '\'' +
-                ", sim=" + sim +
-                '}';
-    }
-
-
-    @Override
-    public int compareTo(Example example)
-    {
-        return this.sim<example.sim?1:this.sim>example.sim?-1:0;
-    }
-}
diff --git a/src/src_houduan/util/ExampleUtils.java b/src/src_houduan/util/ExampleUtils.java
deleted file mode 100644
index 1d0331a..0000000
--- a/src/src_houduan/util/ExampleUtils.java
+++ /dev/null
@@ -1,175 +0,0 @@
-package util;
-
-import com.sun.scenario.effect.impl.sw.sse.SSEBlend_SRC_OUTPeer;
-
-/**
- * @author laoyingyong
- * @date: 2020-02-05 14:32
- */
-public class ExampleUtils
-{
-    public static double getMultipleNum(double n)
-    {
-        if(n>=100)
-        { return 1;}
-        else if(n>=90)
-        { return 0.9;}
-        else if(n>=80)
-        {return 0.8;}
-        else if(n>=70)
-        {return 0.7;}
-        else if(n>=60)
-        {return 0.6;}
-        else if(n>=50)
-        {return 0.5;}
-        else if(n>=40)
-        {return 0.4;}
-        else if(n>=30)
-        {return 0.3;}
-        else if(n>=20)
-        {return 0.2;}
-        else if(n>=0)
-        {return 0.1;}
-        else {System.out.println("倍数不能为负数！");return 0;}//倍数不可能为负数
-    }
-
-
-    public static double getDistanceNum(double n)
-    {
-        if(n>=270)
-        { return 1;}
-        else if(n>=240)
-        { return 0.9;}
-        else if(n>=210)
-        {return 0.8;}
-        else if(n>=180)
-        {return 0.7;}
-        else if(n>=150)
-        {return 0.6;}
-        else if(n>=120)
-        {return 0.5;}
-        else if(n>=90)
-        {return 0.4;}
-        else if(n>=60)
-        {return 0.3;}
-        else if(n>=30)
-        {return 0.2;}
-        else if(n>=0)
-        {return 0.1;}
-        else {System.out.println("距离不能为负数！");return 0;}//距离不可能为负数
-    }
-
-    public static double getToxicityNum(String toxicity)
-    {
-        if(toxicity.equals("微毒"))
-        {
-            return 0.1;
-        }
-        else if(toxicity.equals("低毒"))
-        {
-            return 0.3;
-        }
-        else if(toxicity.equals("中等毒"))
-        {
-            return 0.5;
-        }
-        else if(toxicity.equals("高毒"))
-        {
-            return 0.7;
-        }
-        else if(toxicity.equals("剧毒"))
-        {
-            return 0.9;
-        }
-        else
-        {
-            System.out.println("污染毒性等级有误！");
-            return 0;
-        }
-    }
-
-    public static double getDangerNum(String danger)
-    {
-        if(danger.equals("可燃"))
-        {
-            return 0.2;
-        }
-        else if(danger.equals("易燃"))
-        {
-            return 0.5;
-        }
-        else if(danger.equals("易燃易爆"))
-        {
-            return 0.8;
-        }
-        else
-        {
-            System.out.println("污染物危险等级有误！");
-            return 0;
-        }
-    }
-
-    public static double getStabilityNum(String stability)
-    {
-        if(stability.equals("不稳定"))
-        {
-            return 0.2;
-        }
-        else if(stability.equals("中等"))
-        {
-            return 0.5;
-        }
-        else if(stability.equals("稳定"))
-        {
-            return 0.8;
-        }
-        else
-        {
-            System.out.println("污染物稳定性等级有误！");
-            return 0;
-        }
-    }
-
-
-    public static double getSolubilityNum(String solubility)
-    {
-        if(solubility.equals("不溶于水"))
-        {
-            return 0.2;
-        }
-        else if(solubility.equals("微溶于水"))
-        {
-            return 0.5;
-        }
-        else if(solubility.equals("易溶于水"))
-        {
-            return 0.8;
-        }
-        else
-        {
-            System.out.println("污染物溶解性等级有误！");
-            return 0;
-        }
-    }
-
-    public static double getVolatilityNum(String volatility)
-    {
-        if(volatility.equals("不易挥发"))
-        {
-            return 0.2;
-        }
-        else if(volatility.equals("中等挥发"))
-        {
-            return 0.5;
-        }
-        else if(volatility.equals("易挥发"))
-        {
-            return 0.8;
-        }
-        else
-        {
-            System.out.println("污染物挥发性等级有误！");
-            return 0;
-        }
-    }
-}