Java实现的复数类.docVIP

class Complex{ // 定义属性 double RealPart; double ImagePart; // 定义构造函数 public Complex(){ } public Complex(double R,double I){ this.RealPart=R; this.ImagePart=I; } // 定义公有方法 void setReal(double r){ this.RealPart=r; } void setImage(double i){ this.ImagePart=i; } double getReal(){ return this.RealPart; } double getImage(){ return this.ImagePart; } Complex ComplexAdd(Complex a){ // 加 return new Complex (this.RealPart+a.RealPart,this.ImagePart+a.ImagePart); } Complex ComplexSub(Complex a){ // 减 return new Complex(this.RealPart-a.RealPart,this.ImagePart- a.ImagePart); } Complex ComplexMulti(Complex a){ // 乘 double r=this.RealPart*a.RealPart-this.ImagePart*a.ImagePart; double i=this.RealPart*a.ImagePart+this.ImagePart*a.RealPart; return new Complex(r,i); } Complex ComplexDiv(Complex a){ // 除 if(this.RealPart==0a.ImagePart==0){ // 根据后面得到的内容 System.out.println(输入的被除数不能都为0！\n); return null; } // 化简得到公式为：(a+bi)/(c+di) // 实体部分：(a*c+b*d)/(a*a+d*d) // 虚体部分：(b*c-a*d)/(a*a+d*d) double xx=this.RealPart*this.RealPart+a.ImagePart*a.ImagePart; double r=(this.RealPart*a.RealPart+this.ImagePart*a.ImagePart)/xx; double i=(this.ImagePart*a.RealPart-this.RealPart*a.ImagePart)/xx; return new Complex(r,i); } boolean isEqual(Complex a){ return (this.RealPart==a.RealPartthis.ImagePart==a.ImagePart); } String ToString(){ return this.RealPart+++this.ImagePart+i; } } public class one{ public static void main(String[] args){ Complex a=new Complex(); Complex b=new Complex(1,2); Complex c=new Complex(3,4); System.out.println(a的值为：+a.ToString()); System.out.println(b的值为：+b.ToString()); System.out.println(c的值为：+c.ToString()); System.out.println(); System.out.println(a.RealPart:+a.getReal()); System.out.println(b.RealPart:+b.getReal()); System.out.println(c.RealPart:+c.getReal()); System.out.println(); Complex d=b.ComplexAdd(c); System.out.println(d的值:+d.ToString()); System.out.println(d.ImagePar