/*COMPLEX

* To change this template, choose Tools | Templates

* and open the template in the editor.

*/

package baithuchanh2;

/**

*

* @author VY

*/

import javax.swing.JOptionPane;

public class Complex {

private double a;

private double b;

public void setA(double _a){

this.a=_a;

}

public double getA(){

return this.a;

}

public void setB(double _b){

this.b=_b;

}

public double getB(){

return this.b;

}

public Complex(){

this.a=0;

this.b=0;

}

public Complex(double _a,double _b){

this.a=_a;

this.b=_b;

}

public void nhapSoPhuc(){

boolean check;

do

{

String strA=JOptionPane.showInputDialog("Nhap phan thuc a:");

try

{

this.a=Double.parseDouble(strA);

check=true;

}

catch(Exception e)

{

check=false;

}

} while(check==false);

do

{

String strB=JOptionPane.showInputDialog("Nhap phan thuc b:");

try

{

this.b=Double.parseDouble(strB);

check=true;

}

catch(Exception e)

{

check=false;

}

} while(check==false);

}

public Complex congHaiSoPhuc(Complex cmp1,Complex cmp2)

{

Complex cmp=new Complex();

cmp.a=cmp1.a+cmp2.a;

cmp.b=cmp1.b+cmp2.b;

return cmp;

}

public Complex truHaiSoPhuc(Complex cmp1,Complex cmp2)

{

Complex cmp=new Complex();

cmp.a=cmp1.a-cmp2.a;

cmp.b=cmp1.b=cmp2.b;

return cmp;

}

public Complex nhanHaiSoPhuc(Complex cmp1,Complex cmp2)

{

Complex cmp=new Complex();

cmp.a=cmp1.a*cmp2.a-cmp1.b*cmp2.b;

cmp.b=cmp1.a*cmp2.b+cmp1.b*cmp2.a;

return cmp;

}

public Complex chiaHaiSoPhuc(Complex cmp1,Complex cmp2)

{

Complex cmp=new Complex();

cmp.a=(cmp1.a*cmp2.a+cmp1.b*cmp2.b)/(Math.pow(cmp2.a, 2)+Math.pow(cmp2.b, 2));

cmp.b=(cmp1.b*cmp2.a-cmp1.a*cmp2.b)/(Math.pow(cmp2.a, 2)+Math.pow(cmp2.b, 2));

return cmp;

}

public void inSoPhuc(Complex cmp)

{

JOptionPane.showMessageDialog(null, "So phuc:"+a+"i+"+b);

}

}

/*MAIN

* To change this template, choose Tools | Templates

* and open the template in the editor.

*/

package baithuchanh2;

/**

*

* @author VY

*/

public class Main {

/**

* @param args the command line arguments

*/

public static void main(String[] args) {

// test Complex

Complex complex=new Complex();

complex.nhapSoPhuc();

complex.inSoPhuc(complex);

//

Complex cmp1=new Complex(1,2);

//Cong

Complex cmp2=new Complex();

cmp2=cmp2.congHaiSoPhuc(complex, cmp1);

}

}