Lab 11 Exercise Questions at Java Programming

class Complex {
   private double real;
   private double imaginary;
   private static double LIMIT = 10.0;
   public Complex() {
      this.real = 0;
      this.imaginary = 0;
   }
   public Complex(double real) {
      this.real = real;
      this.imaginary = 0;
   }
   public Complex(double real, double imaginary) {
      this.real = real;
      this.imaginary = imaginary;
   }
   public double getReal() {
      return this.real;
   }
   public double getImaginary() {
      return this.imaginary;
   }
   public void setReal(double real) {
      this.real = real;
   }
   public void setImaginary(double imaginary) {
      this.imaginary = imaginary;
   }
   public String toString() {
      return real + " " + imaginary + "i";
   }
   public boolean equals(Complex c)
   {
      return ((this.real == c.real) && (this.imaginary == c.imaginary));
   }
   public Complex add(Complex c)
   {
      return new Complex(this.real + c.real, this.imaginary + c.imaginary);
   }
   public Complex add(double value)
   {
      return new Complex(this.real + value, this.imaginary);
   }
   public boolean isBig() {
      return (Math.sqrt(this.real*this.real+this.imaginary*this.imaginary) > LIMIT);
   }
   public static Complex add(Complex c1, Complex c2)
   {
      return new Complex(c1.real + c2.real, c1.imaginary + c2.imaginary);
   }
}

//Complex Tester class
//Author: Kevin Soule

class ComplexTester {
   public static void main(String args[] ) {
 
   //create complex numbers testing all three constructors
   Complex one = new Complex();
   Complex two = new Complex(5);
   Complex three = new Complex(2.1,3.5);
   // test toString
   System.out.println("First Complex number : " + one.toString());
   System.out.println("Second Complex number : " + two.toString());
   System.out.println("Third Complex number : " + three);
 
   //test accessors
   System.out.println("Real for third number : "+ three.getReal());
   System.out.println("Imaginary for third number : " + three.getImaginary());
 
   //test mutators
   System.out.println("Using mutators, change first number to 1.7 + 3.4i");
   one.setReal(1.7);
   one.setImaginary(3.4);
   System.out.println("First Complex number : " + one);
   System.out.println();
 
   //test two instance add methods
   Complex four = one.add(three);
   System.out.println(one + " plus " + three + " = " + four);
   Complex five = two.add(3);
   System.out.println("Adding 3.0 to Second complex number = " + five);
   System.out.println();
 
   //test equals method
   System.out.println("Third Complex number : " + three);
   Complex six = new Complex(2.1,3.5);
   System.out.println("Sixth Complex number : " + six);
 
   System.out.println("Third equals sixth : " + three.equals(six));
   System.out.println("Third equals first : " + three.equals(one)); 
   System.out.println();
 
   //test static add method
   System.out.println("Fourth Complex number : " + four);
   System.out.println("Fifth Complex number : " + five);
   Complex seven = Complex.add(four,five);

   System.out.println("Fourth plus Fifth = " + seven);
   //testing toBig method
     
   System.out.println();
   System.out.println("Seventh Complex number : " + seven);
   System.out.println("Is Fourth to Big : " + four.isBig());
   System.out.println("Is Seventh to Big : " + seven.isBig());
   }
}
 



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