package Drugi;

public class Prostokat {
  private float a;
  private float b;
  
  Prostokat()
  {
	  this.a = 0;
	  this.b = 0;
	  System.out.println("Uruchomiono konstruktor bezparametrowy klasy Prostokat");
  }
  Prostokat(float a, float b)
  {
	  if ( (a >= 0) && (b >= 0) )
	  {
		  this.a = a;
		  this.b = b;
	  }
	  else
	  {
		  this.a = 0;
		  this.b = 0;
	  }
	  System.out.println("Uruchomiono konstruktor parametrowy klasy Prostokat");
  }
  
 public float getA() {
	return a;
 }
 
 public void setA(float a) {
	if (a >= 0)
	 this.a = a;
	else
		this.a = 0;
 }
 
 public float getB() {
	return b;
 }
 
 public void setB(float b) {
	if (b >= 0)
		this.b = b;
	else
		this.b = 0;
}
 public void setWymiary(float a, float b)
 {
	 if ( (a >= 0) && (b >= 0) )
	  {
		  this.a = a;
		  this.b = b;
	  }
	  else
	  {
		  this.a = 0;
		  this.b = 0;
	  }
 }
 
 public float pole()
 {
	 return this.a * this.b;
 }
 public float obwod()
 {
	 float p = this.a + this.b;
	 p *= 2;
	 return p; 
 }
   
}