Java8 使用 stream().filter()过滤List对象（查找符合条件的对象集合）

public class StudentInfo implements Comparable {

//名称
private String name;

//性别 true男 false女
private Boolean gender;

//年龄
private Integer age;

//身高
private Double height;

//出生日期
private LocalDate birthday;

public StudentInfo(String name, Boolean gender, Integer age, Double height, LocalDate birthday){
this.name = name;
this.gender = gender;
this.age = age;
this.height = height;
this.birthday = birthday;
}

public String toString(){
String info = String.format("%s\t\t%s\t\t%s\t\t\t%s\t\t%s",this.name,this.gender.toString(),this.age.toString(),this.height.toString(),birthday.toString());
return info;
}

public static void printStudents(List studentInfos){
System.out.println("[姓名]\t\t[性别]\t\t[年龄]\t\t[身高]\t\t[生日]");
System.out.println("----------------------------------------------------------");
studentInfos.forEach(s->System.out.println(s.toString()));
System.out.println(" ");
}

@Override
public int compareTo(StudentInfo ob) {
return this.age.compareTo(ob.getAge());
//return 1;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Boolean getGender() {
return gender;
}

public void setGender(Boolean gender) {
this.gender = gender;
}

public Integer getAge() {
return age;
}

public void setAge(Integer age) {
this.age = age;
}

public Double getHeight() {
return height;
}

public void setHeight(Double height) {
this.height = height;
}

public LocalDate getBirthday() {
return birthday;
}

public void setBirthday(LocalDate birthday) {
this.birthday = birthday;
}
}

StudentInfo对象类