Hi Friend,

Try the following code:

public class ComplexNumber{
private int a;
private int b;
public ComplexNumber(){
}

public ComplexNumber(int a, int b){
this.a =a;
this.b=b;
}
public String getComplexValue(){
if(this.b < 0){
return a+""+b+"i";
}
else{
return a+"+"+b+"i";
}
}

public static String addition(ComplexNumber num1, ComplexNumber num2){
int a1= num1.a+num2.a;
int b1= num1.b+num2.b;
if(b1<0){
return a1+""+b1+"i";
} else {
return a1+"+"+b1+"i";
}
}

public static void main(String args[]){
ComplexNumber com1 = new ComplexNumber(-2,-3);
ComplexNumber com2 = new ComplexNumber(-4,-5);
System.out.println(com1.getComplexValue());
System.out.println(com2.getComplexValue());
System.out.println("Addition of Complex Numbers are :" +ComplexNumber.addition(com1,com2));

}
}
Thanks