设计模式-3-过滤器模式

packagecom.xing.design.filter;
/*** 员工类* @author xing* @createTime*/publicclassEmployee {
/*** 名字*/privateStringname;
/*** 性别*/privateStringgender;
/*** 机构 */privateStringdept;
/*** 工资*/privateintsalary;
publicStringgetName() {
returnname;
  }
publicvoidsetName(Stringname) {
this.name=name;
  }
publicStringgetGender() {
returngender;
  }
publicvoidsetGender(Stringgender) {
this.gender=gender;
  }
publicStringgetDept() {
returndept;
  }
publicvoidsetDept(Stringdept) {
this.dept=dept;
  }
publicintgetSalary() {
returnsalary;
  }
publicvoidsetSalary(intsalary) {
this.salary=salary;
  }
/*** 构造* @param name 名称* @param dept 机构* @param sal 工资*/publicEmployee(Stringname, Stringgender, Stringdept, intsal) {
this.name=name;
this.gender=gender;
this.dept=dept;
this.salary=sal;
  }
publicStringtoString(){
return ("Employee :[ Name : "+name+", dept : "+dept+", salary :"+salary+" ]");
  }   
}

packagecom.xing.design.filter;
importjava.util.List;
/***  标准* @author xing* @createTime*/publicinterfaceCriteria {
/***  过滤* @param list* @return*/List<Employee>fiterGril(List<Employee>list);
}
三、实现上述接口，编写两个不同的过滤规则1.工资高的肯定好packagecom.xing.design.filter;
importjava.util.ArrayList;
importjava.util.List;
/***  通过工资过滤筛选* @author xing* @createTime*/publicclassSalaCriteriaimplementsCriteria{
@OverridepublicList<Employee>fiterGril(List<Employee>list) {
List<Employee>newList=newArrayList<>();
for(Employeee : list) {
if(e.getSalary() >100) {
newList.add(e);
      }
    }
returnnewList;
  }
}

packagecom.xing.design.filter;
importjava.util.ArrayList;
importjava.util.List;
/***  通过性别过滤筛选* @author xing* @createTime*/publicclassGenderCriteriaimplementsCriteria{
@OverridepublicList<Employee>fiterGril(List<Employee>list) {
List<Employee>newList=newArrayList<>();
for(Employeee : list) {
if("女".equals(e.getGender())) {
newList.add(e);
      }
    }
returnnewList;
  }
}

packagecom.xing.design.filter;
importjava.util.ArrayList;
importjava.util.List;
/***  过滤器模式 Filter Pattern* @author xing* @createTime*/publicclassFilterPatternDemo {
publicstaticvoidmain(String[] args) {
// 一群公主List<Employee>list=newArrayList<>();
list.add(newEmployee("小野", "男", "怡红院", 500));
list.add(newEmployee("小红", "女", "怡红院", 500));
list.add(newEmployee("老鸨", "女", "怡红院", 500));
list.add(newEmployee("加藤鹰", "男", "KTV", 200));
list.add(newEmployee("波多野结衣", "女", "KTV", 200));
list.add(newEmployee("苍井空", "女", "怡红院", 1000));
// 工资高肯定就好CriteriasalaCriteria=newSalaCriteria();
System.out.println("工资大于100的：");
System.out.println(salaCriteria.fiterGril(list));
// 剔除人妖CriteriagenderCriteria=newGenderCriteria();
System.out.println("性别真实是女的：");
System.out.println(genderCriteria.fiterGril(list));
  }
}