Coding java Menimbang berat badan

package latihanpraktikum;
import java.util.Scanner;

public class LatihanPraktikum {
      public static void main(String[] args) {
        Scanner data = new Scanner(System.in);
        System.out.print("Berat badan= ");
        float beratbadan = data.nextFloat();
        System.out.print("Tinggi badan = ");
        float tinggibadan = data.nextFloat();
        System.out.println("");
        System.out.println("nama = "+nama);
        System.out.println("alamat = "+alamat);
        System.out.println("NoHP = "+NoHP);
        System.out.println("Berat badan = "+beratbadan);
        System.out.println("Tinggi badan = "+tinggibadan);
        float bmi = beratbadan / (tinggibadan*tinggibadan);
        System.out.println("bmi = "+bmi);
        boolean bmi2 = bmi < 18.5 ;
        System.out.println("kekurangan berat badan = "+bmi2);
        boolean bmi3 = bmi < 18.5 && bmi > 24.9 ;
        System.out.println("berat badan normal"+bmi3);
        boolean bmi4 = bmi < 25 && bmi > 29.9 ;
        System.out.println("Berlebihan berat badan "+bmi4);
        boolean bmi5 = bmi > 30 ;
        System.out.println("Berlebihan berat badan "+bmi4);
     
    }
 
}