为什么最后输入是这个啊？
test.Complex@3567135c|7.810249675906654
复数的加法：test.Complex@327471b5
复数的减法：test.Complex@4157f54e
复数的乘法：test.Complex@90f6bfd
复数的除法：test.Complex@47f6473
原代码在这里
主类：
package test;
public class ComplexDome{
public static void main(String[] args) {
Complex c1=new Complex();
Complex c2=new Complex();
Complex c3,c4,c5,c6,z,z1;
System.out.print("请输入第一个复数的实部：");
c1.setReal();
System.out.print("请输入第一个复数的虚部：");
c1.setImage();
c1=new Complex(c1.getReal(),c1.getImage());
z=c1;
z1=c2;
System.out.print("第一个复数是：");
System.out.println(c1.getString(z));
System.out.print("请输入第二个复数的实部：");
c2.setReal();
System.out.print("请输入第二个复数的虚部：");
c2.setImage();
c2=new Complex(c2.getReal(),c2.getImage());
System.out.print("第二个复数是：");
System.out.println(c2.getString(z1));
System.out.println("|"+c1+"|"+c1.mod(z));
System.out.print("复数的加法：");
c3=c1.add(z);
System.out.println(c3);
System.out.print("复数的减法：");
c4=c1.sub(c2);
System.out.println(c4);
System.out.print("复数的乘法：");
c5=c1.multi(c2);
System.out.println(c5);
System.out.print("复数的除法：");
c6=c1.div(c2);
System.out.println(c6);
}
}
package test;
import java.util.Scanner;
public class Complex{
Scanner input=new Scanner(System.in);
private double real;
private double image;
String s;
Complex z;
Complex(double a,double b){
real=a;
image=b;
}
Complex(double a){
real=a;
image=0.0;
}
Complex(){
real=0.0;
image=0.0;
}
Complex(Complex c1){
z=c1;
}
public void setReal(){
real=input.nextDouble();
}
public void setImage(){
image=input.nextDouble();
}
public double getReal(){
return real;
}
public double getImage(){
return image;
}
double mod(Complex y){
return Math.sqrt(y.real*y.real+y.image*y.image);
}
Complex add(Complex y){
return new Complex(real+y.real,image+y.image);
}
Complex sub(Complex y){
return new Complex(real-y.real,image+y.image);
}
Complex multi(Complex y){
return new Complex(real*y.getReal()-image*y.getImage(),real*y.getImage()+image*y.getReal());
}
Complex div(Complex y)
{
double real=(this.real*y.getReal()+this.image*y.getImage())/(y.getReal()*y.getReal()+y.getImage()*y.getImage());
double image=(this.image*y.getReal()-y.real*y.getImage())/(y.getReal()*y.getReal()+y.getImage()*y.getImage());
return new Complex(real,image);
}
public String getString(Complex z){
if(z.getReal()==0&&z.getImage()==0)
return "0";
else if(z.getReal()==0&&z.getImage()!=0)
return ""+z.getImage()+"i";
else if(z.getReal()!=0&&z.getImage()==0)
return ""+z.getReal();
else {
if(image<0){
return ""+z.getReal()+z.getImage()+"i";
}
else{
return ""+z.getReal()+"+"+z.getImage()+"i";
}
}
}
}
重写tostring方法
加上一个
@override
public String toString()
{
return getString(this);
}
package stu.crayue.complex;
/**
* @author Crayue
* @version 2019年10月24日 上午10:15:54
*/
public class Complex {
private double real;
private double vir;
public Complex() {//无参构造
this(0.0,0.0);
}
public Complex(double real) {//单参构造
this.real = real;
}
public Complex(double real, double vir) {//双参构造
this.real = real;
this.vir = vir;
}
public Complex(Complex c) {//Complex类型的单参构造
this(c.real,c.vir);
}
public double getReal() {
return real;
}
public void setReal(double real) {
this.real = real;
}
public double getVir() {
return vir;
}
public void setVir(double vir) {
this.vir = vir;
}
@Override
public boolean equals(Object obj) {//覆盖object的equals方法
if(obj==null) {
return false;
}
if(this==obj) {
return true;
}
if(obj.getClass()!=this.getClass()) {
return false;
}
Complex c= (Complex) obj;//强转obj类型为Complex
return Math.abs(this.real-c.real)<1e-6 && Math.abs(this.vir-c.vir)<1e-6;
}
@Override
public String toString() {//覆盖object中的toString方法
return "(" + real + "," +vir +")";
}
//加法
public Complex Add (Complex other) {
this.real+=other.real;
this.vir+=other.vir;
return this;
}
public static Complex Add(Complex one, Complex other) {
return new Complex(one).Add(other);
}
//取相反数
private static Complex Opposite(Complex c) {
return new Complex(-c.real, -c.real);
}
//减法
public Complex Sub(Complex other) {
return this.Add(Opposite(other));
}
public static Complex Sub(Complex one, Complex other) {
return new Complex(one).Sub(other);
//return new Complex(one).Add(Opposite(other));
}
//乘法
public Complex Mul(Complex other) {
//必须realSave,防止值更改
double Savereal = this.real;
this.real = this.real * other.real - this.vir * other.vir;
this.vir = Savereal * other.vir + this.vir * other.real;
return this;
}
public static Complex Mul(Complex one, Complex other) {
return new Complex(one).Mul(other);
}
//取倒数
private static Complex Reciprocal(Complex c) {
double cc = c.real * c.real + c.vir * c.vir;
//分母为零 代码优化 使用三目运算符：
return (Math.abs(cc) < 1e-6)?null:new Complex(c.real /cc, -c.vir /cc) ;
/*if (Math.abs(cc) < 1e-6) {
return null;
}
return new Complex(c.real /cc, -c.vir /cc);
}*/
public Complex Div(Complex other) {
Complex another = Complex.Reciprocal(other);
return another==null ? null :Mul(another);
}
public static Complex Div (Complex c1,Complex c2) {
return new Complex(c1).Div(c2);
//Complex another=Reciprocal(c2);
//return another ==null?null:new Complex(c1).Mul(another);
}
}
test：
package stu.crayue.complex.test;
import stu.crayue.complex.Complex;
/**
* @author Crayue
* @version 2019年10月24日 上午11:06:22
*/
public class Test {
public static void main(String[] args) {
Complex c1= new Complex(0, 1.0);
Complex c2= new Complex(3.2, 5.3);
Complex c3= new Complex(1, 1.0);
System.out.println(c2.Add(c1).Add(c3));
System.out.println(Complex.Add(c1, c2));//静态方法的调用
System.out.println(Complex.Add(new Complex(0,1.0),new Complex(3.3,5.3)));//直接传入两个参数
System.out.println(c2.Sub(c1));
System.out.println(c3.Mul(c1));
System.out.println(c3.Div(c1));
}
}