Membuat perhitungan akar dengan java

import java.util.*; 
public class akar{ 
static double D(int a,int b,int c){ 
return (Math.pow(b,2)-4*a*c); 
} 
static double x1(int a,int b,int c){ 
return (-b + Math.sqrt(D(a,b,c)))/2*a; 
} 
static double x2(int a,int b,int c){ 
return (-b - Math.sqrt(D(a,b,c)))/2*a; 
} 
static double x(int a,int b){ 
return (-b/(2*a)); 
} 
static void PK(int a,int b,int c){ 
if (D(a,b,c)>0){ 
System.out.println("x1 = "+x1(a,b,c)); 
System.out.println("x2 = "+x2(a,b,c)); 
 System.out.println("");
System.out.println("Akar-akar persamaan kuadrat nyata dan berbeda");
System.out.println("Karena D>0, maka persamaan kuadrat tidak mempunyai dua akar Real yg berlainan."); 
}else if(D(a,b,c)==0){ 
System.out.println("x = "+x(a,b)); 
 System.out.println("");
System.out.println("Akar-akar persamaan kuadrat nyata tetapi kembar, Karena D=0 ");
System.out.println("maka persamaan kuadrat tidak mempunyai akar Real yg sama atau kembar."); 
}else{ 
 System.out.println("");
System.out.println("Akar-akar persamaan imaginer...!"); 
System.out.println("Karena D<0, maka persamaan kuadrat tidak mempunyai akar Real."); 
} 
} 


public static void main(String[] args){ 
Scanner input = new Scanner(System.in); 
System.out.println("");
System.out.println("\t\t  MENU\n");
   System.out.println("\t\t^^^^^^^^\n");


System.out.println("Program Mencari Akar-akar Persamaan Kuadrat"); 
 System.out.println("");
System.out.println("*^Menggunakan Rumus abc^*"); 
 System.out.println("");
System.out.print("Masukkan nilai a = "); 
int a=input.nextInt(); 
System.out.print("Masukkan nilai b = "); 
int b=input.nextInt(); 
System.out.print("Masukkan nilai c = "); 
int c=input.nextInt(); 
 System.out.println("");
System.out.println("Nilai Diskriminannya, -> D = "+D(a,b,c)); 
System.out.print(""); 
PK(a,b,c); 
  System.out.println("");
   System.out.println("\t\tTerima Kasih\n");
   System.out.println("\t\tSampai Jumpa\n");
} 
}

Posted in: Java