For example
package testcircle1;
import java.util.Scanner;
public class TestCircle1 {
public static void main(String[] args) {
System.out.println("Welcome!!!!");
Circle c1 = new Circle( );
Scanner in= new Scanner(System.in);
System.out.println("Please enter a number");
c1.setRadius() = in.nextDouble();
System.out.println(c1.getRadius());
}
}
package testcircle1; public class Circle {
public Circle() {
}
public Circle(double radius) {
}
public void setRadius(double radius) {
if (radius >= 0)
this.radius = radius;
}
public double getRadius() {
return radius;
}
}
What am I doing wrong?
You need to add below two. 1. Add 'private double radius;' in class Circle 2. In main method you need to use c1.setRadius(in.nextDouble())
providing code for the same
import org.slf4j.Logger; import org.slf4j.LoggerFactory;
import java.util.Scanner;
public class TestCircle1 {
private static Logger logger = LoggerFactory.getLogger(TestCircle1.class);
public static void main(String[] args) {
System.out.println("Welcome!!!!");
Circle c1 = new Circle();
try {
Scanner in = new Scanner(System.in);
System.out.println("Please enter a number");
if (!in.hasNextDouble()) {
throw new IllegalArgumentException("Input is not a double value");
}
c1.setRadius(in.nextDouble());
System.out.println(c1.getRadius());
} catch (IllegalArgumentException e) {
logger.error(e.getMessage());
}
} }
public class Circle {
private double radius;
public Circle() {
}
public Circle(double radius) {
}
public void setRadius(double radius) {
if (radius >= 0)
this.radius = radius;
}
public double getRadius() {
return radius;
}
}
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