public class Province {
     private String name;//省份名称
     private long area;//土地面积
     private boolean general;//是普通省份还是特殊省份
  
     public String getName() {
         return name;
     }
  
     public void setName(String name) {
         this.name = name;
     }
  
     public long getArea() {
         return area;
     }
  
     public void setArea(long area) {
         this.area = area;
     }
  
     public void setGeneral(boolean general) {
         this.general = general;
     }
  
     public boolean isGeneral() {
         return general;
     }
 }
 管理类import java.util.LinkedHashSet;
 public class ProvinceManager {
     //添加省份到set集合
     private LinkedHashSet provinceSet;
  
     public LinkedHashSet getProvinceSet() {
         return provinceSet;
     }
  
     public void setProvinceSet(LinkedHashSet provinceSet) {
         this.provinceSet = provinceSet;
     }
  
     public void addProvince(Province pro) {
         provinceSet.add(pro);
     }
  
     //根据给定省份显示省份信息
     public Province findProvinceByname(String name) {
         for (Object o : provinceSet) {
             if (((Province) o).getName().equals(name)) {
                 return (Province) o;
             }
         }
         return null;
     }
     //显示省份信息
     public void displayAll(){
         for(Object o:provinceSet){
             System.out.println(((Province) o).getName()+"\t"+((Province) o).getArea()+"\t"+((Province) o).isGeneral());
         }
     }
     public ProvinceManager() {
         if (provinceSet == null) {
             provinceSet = new LinkedHashSet();
  
  
         }
     }
 }
  
 测试类import java.util.Scanner;
  
 //linkhashset
 public class test64 {
     public static void main(String[] args){
         Scanner in=new Scanner(System.in);
         System.out.println("请输入省份的信息3个");
         ProvinceManager pm=new ProvinceManager();
         for(int i=0;i<=3;i++){
             System.out.println("请输入第"+i+"个省份信息");
             System.out.println("请输入省份名称");
             String name=in.next();
             System.out.println("请输入土地面积");
             long area=in.nextLong();
             System.out.println("直辖市输入0普通输入1");
             int tag=in.nextInt();
             Province pro=new Province();
             pro.setName(name);
             pro.setArea(area);
             if(tag==0)
                 pro.setGeneral(false);
             else
                 pro.setGeneral(true);
             pm.addProvince(pro);
         }
         System.out.println("所有省份信息如下:");
         pm.displayAll();//显示所有省份的信息
         System.out.println("请输入要查找的省份名称");
         String proName=in.next();
         Province target=pm.findProvinceByname(proName);
         if(target==null){
             System.out.println("没有找到");
         }else{
             System.out.println(target.getName()+target.getArea()+target.isGeneral());
         }
     }
 }


 
运行结果

java124-小综合案例_System