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**Introduction**

This is a tutorial for solving quadratic equations in java. The program is given below that solves the QE. The program is not extendable. Go enjoy the program. Lets begin……..

**Program for solving quadratic equation in java.**

```
//import Scanner as we require it.
import java.util.Scanner;
// the name of our class its public
public class QuadraticEq {
//void main
public static void main (String[] args)
{
//declare int
int a,b,c,x,y,z,t;
//Declare input as scanner
Scanner input = new Scanner(System.in);
//Take inputs
System.out.println("Enter value of a,b,c of QE:");
a = input.nextInt();
b = input.nextInt();
c = input.nextInt();
System.out.println("----------------------------");
System.out.println("QE : "+a+"x(square)+"+b+"x+"+c);
System.out.println("----------------------------");
//calculate
x=(b*b)-(4*a*c);
System.out.println("b*b-4*a*c is "+x);
if(x<0)
System.out.println("Roots are imaginary");
else
{
//calculate roots
t=(int) Math.sqrt(x);
y=(-b+t)/(2*a);
z=(-b-t)/(2*a);
System.out.println("Roots are "+y+" & "+z);
}
}
}
```

**Output**

Enter value of a,b,c of QE:

1

4

3

—————————-

QE : 1x(square)+4x+3

—————————-

b*b-4*a*c is 4

Roots are -1 & -3

**How it works**

- The program prints the message to enter values of a,b,c of QE.
- The user enters values.
- The QE is solved and printed.

**Extending it.**

The program is not extendable. There is no direction to extend it.

**Explanation.**

- Import the Scanner.
- Declare the class as public
- Add the void main function
- Add system.out.println() function with the message to enter values of QE.
- Declare input as Scanner.
- Take the inputs and save it in variables.
- Sovle Qe and save it in variable.
- Add system.out.println() function to print the roots.

**At the end.**

You learnt creating the Java program for Solving Quadratic Equation. So now enjoy the program.

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