JNTU Hyderabad CSE/IT Java OOPS Week 1A - Finding the roots of a quadratic equation

Are you looking for JNTU Hyderabad CSE/IT solved java 2-2 lab assignments and week programs ? Here is the perfect resource for you . You can directly copy and paste the below code in a Java Editor to excecute the program.

Get the solutions for JNTU Btech Lab java programs for CSE and Information Technology branches . The resource includes the clear explanation of the code. The below code was uploaded only after the successful execution using Java Standard Edition. JNTU Hyderabad and affiliated colleges conducts a lab session every week for all B.tech Regular students. Here I'm giving solution for the Week 1 1st program. The aim of the program is to find the roots of quadratic equation using a simple java program .You can also get more information about JNTU Java programs solutions on this site for all weeks.
Input: The user gives the coefficients of quadratic equation as input.
The programs reads three values a,b,c to solve the roots of equation.
We know the roots of equation are
r1=-b+sqrt(b2-4*a*c)/2*a
r2=-b-sqrt(b2-4*a*c)/2*a
This can be solved in java by implementing the following source code. With this, you have successfully completed the week 1 first program of your Jntu CSE/IT 2-2 Syllabus.

//To find roots of a quadratic equation using java
class Root //Define a class
{
public static void main(String[] args)
{
int d=0;/Initialise discriminant
double r1=0,r2=0;//r1,r2 are the roots
int a=Integer.parseInt(args[0]);//Take the first argument as 'a'
int b=Integer.parseInt(args[1]);//take the second argument as 'b'
int c=Integer.parseInt(args[2]);//take the third argument as 'c'
d=((b*b)-(4*a*c));//calculate discriminant
if(d==0)//if the roots are equal
{
System.out.println("roots are real and equal");
r1=(-b)/(2*a);//root 1
r2=(-b)/(2*a);//root 2
System.out.println(r1);//display root 1
System.out.println(r2);//display root 2
}
else if(d>0)//if roots are not equal
{
System.out.println("roots are real and distinct");//display that roots are not equal
r1=(-b+Math.sqrt(d))/(2*a);//calculate root 1
r2=(-b-Math.sqrt(d))/(2*a);//calculate root 2
System.out.println(r1);//display root 1
System.out.println(r2);//display root 2
}
else//if roots are imaginary
{
System.out.println("no real solutions");//diaplay there is no solution
}
The output will be as follows:

Output
D:\education\java\programs>javac Root.java
D:\education\java\programs>java Root 1 -4 4
roots are real and equal
2.0
2.0

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