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==0&&a.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.RealPart&&this.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.ImagePart:"+d.getImage());
Complex e=b.ComplexMulti(c);
System.out.println("e的值:"+e.ToString());
System.out.println("e.ImagePart:"+e.getImage());
System.out.println("d和e相等吗："+d.isEqual(e));
// 设置值后
e.setReal(4.0);
} } e.setImage(6.0); System.out.println("设置了值后d和e相等吗："+d.isEqual(e));
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