Language: Java

import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    try (Scanner scanner = new Scanner(System.in)) {
      while (scanner.hasNext()) {
        String[] s = scanner.nextLine().split(",");
        Student student = new Student(s[0], Double.parseDouble(s[1]), Double.parseDouble(s[2]));
        if (student.bmi.isDebu()) {
          System.out.println(student.studentId);
        }
      }
    }
  }
}

class Student {
  final String studentId;
  final Bmi bmi;

  Student(String studentId, double ??????kg, double ??????m) {
    this.studentId = studentId;
    this.bmi = new BmiImpl(??????kg, ??????m);
  }
}

interface Bmi {
  int debu = 25;

  boolean isDebu();
}

class BmiImpl implements Bmi {

  private final double ??????kg;
  private final double ??????m;

  BmiImpl(double ??????kg, double ??????m) {
    this.??????kg = ??????kg;
    this.??????m = ??????m;
  }

  public double calc() {
    return ??????kg / Math.pow(??????m, 2);
  }

  @Override
  public boolean isDebu() {
    return calc() >= debu;
  }
}

Compiler output:
Main.java:22: error: <identifier> expected
  Student(String studentId, double ??????kg, double ??????m) {
                                  ^
Main.java:22: error: <identifier> expected
  Student(String studentId, double ??????kg, double ??????m) {
                                                   ^
Main.java:22: error: <identifier> expected
  Student(String studentId, double ??????kg, double ??????m) {
                                                           ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                           ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                            ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                             ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                              ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                               ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                                ^
Main.java:24: error: : expected
    this.bmi = new BmiImpl(??????kg, ??????m);
                                   ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                                     ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                                      ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                                       ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                                        ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                                         ^
Main.java:24: error: illegal start of expression
    this.bmi = new BmiImpl(??????kg, ??????m);
                                          ^
Main.java:24: error: : expected
    this.bmi = new BmiImpl(??????kg, ??????m);
                                            ^
Main.java:36: error: <identifier> expected
  private final double ??????kg;
                      ^
Main.java:36: error: <identifier> expected
  private final double ??????kg;
                               ^
Main.java:37: error: <identifier> expected
  private final double ??????m;
                      ^
Main.java:37: error: <identifier> expected
  private final double ??????m;
                              ^
Main.java:39: error: <identifier> expected
  BmiImpl(double ??????kg, double ??????m) {
                ^
Main.java:39: error: <identifier> expected
  BmiImpl(double ??????kg, double ??????m) {
                                 ^
Main.java:39: error: <identifier> expected
  BmiImpl(double ??????kg, double ??????m) {
                                         ^
Main.java:40: error: <identifier> expected
    this.??????kg = ??????kg;
         ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
          ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
           ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
            ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
             ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
              ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
                    ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
                     ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
                      ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
                       ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
                        ^
Main.java:40: error: illegal start of expression
    this.??????kg = ??????kg;
                         ^
Main.java:40: error: : expected
    this.??????kg = ??????kg;
                            ^
Main.java:41: error: <identifier> expected
    this.??????m = ??????m;
         ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
          ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
           ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
            ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
             ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
              ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
                   ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
                    ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
                     ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
                      ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
                       ^
Main.java:41: error: illegal start of expression
    this.??????m = ??????m;
                        ^
Main.java:41: error: : expected
    this.??????m = ??????m;
                          ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
           ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
            ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
             ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
              ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
               ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
                ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
                               ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
                                ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
                                 ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
                                  ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
                                   ^
Main.java:45: error: illegal start of expression
    return ??????kg / Math.pow(??????m, 2);
                                    ^
Main.java:45: error: : expected
    return ??????kg / Math.pow(??????m, 2);
                                      ^
Main.java:45: error: : expected
    return ??????kg / Math.pow(??????m, 2);
                                          ^
64 errors