package com;
public class Circle {
private double r = 5;
public double getR() {
return r;
}
public void setR(double r) {
this.r = r;
}
public double getArea(double r){
return this.r*this.r*Math.PI;
}
}
package com;
public class Test {
public static void main(String[] args) {
Circle circle = new Circle();
System.out.println(circle.getArea(circle.getR()));
}
}
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