lab 8 calculation of bmi by lava

public class Student {
  private String name;
  private float weight;
  private float high;
  private int age;
  private int ID;
  public  Student(String name , int weight , int high , int age , int ID ) {
    this.name = name ;
    this.weight = weight;
    this.high = high;
    this.age = age;
    this.ID = ID;
   }
  public float get_high(){
    return this.high;
  }
  public float get_weight(){
    return this.weight;
  }
  public void display() {
    System.out.println( "NAME: "+this.name);
    System.out.println( "WEIGHT:"+this.weight+"  kg.");
    System.out.println( "HIGH:"+this.high+"  cm.");
    System.out.println( "AGE :"+this.age+"  years old");
    System.out.println( "ID :"+this.ID);
}
public static void main(String[] args) {
    Student[] std = {new Student("Park",40,160,18,1),
                    new Student("Nani",50,180,19,2),
                     new Student("Pepe",80,185,20,3),
                     new Student("Giggs",70,160,18,4),
                     new Student("Laws",85,155,18,5)
                    };
 
    int index = 0;
    while(index<std.length){
      std[index].display();
      System.out.println("BMI "+calculation_of_bmi (std[index] ));
   
      index = index + 1;

    }
    System.out.println("Number of students that have bmi more than 25 is "+count_bmi(std));
  }
public static float calculation_of_bmi (Student Student){
   float  highM = Student.get_high() / 100;
   float bmi = Student.get_weight()/(highM*highM);
    return bmi ;
  }

  public static int count_bmi(Student[] student){
    int index = 0 ;
    int count = 0 ;
      while(index<student.length){
      if(calculation_of_bmi (student[index])>25){
          count +=1 ;
      }
          index = index + 1 ;
      }
        return count    ;
      }
    }