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复数相乘java代码 java复数的加减
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1.运用java 编写一个复数类,有实部和虚部,并实现复数的加减乘除运算？
public class ComplexNumber {
/**
* @param args
*/
int shi,xu;//复数的实部和虚部
public ComplexNumber(int n,int ni){
shi = n;
xu = ni;
}
public void ComplexShow(){
String output = "";
output+=shi;
if(xu=0){
output+="+";
}
output+=xu;
output+="i";
System.out.println(output);
}
public void ComplexShow1(){//不要换行
String output = "";
output+=shi;
if(xu=0){
output+="+";
}
output+=xu;
output+="i";
System.out.print(output);
}
public static void ComplexAdd(ComplexNumber x1,ComplexNumber x2){//实现两个复数相加
ComplexNumber cn = new ComplexNumber(0, 0);//将两个复数相加等于cn
cn.shi = x1.shi + x2.shi;
cn.xu = x1.xu + x2.xu;
cn.ComplexShow();
}
public static void ComplexMinus(ComplexNumber x1,ComplexNumber x2){//实现两个复数相减，第一个数减第二个数
ComplexNumber cn = new ComplexNumber(0, 0);//将两个复数相加等于cn
cn.shi = x1.shi - x2.shi;
cn.xu = x1.xu - x2.xu;
cn.ComplexShow();
}
public static void ComplexMultiply(ComplexNumber x1,ComplexNumber x2){//实现两个复数相乘
ComplexNumber cn = new ComplexNumber(0, 0);//将两个复数相加等于cn
cn.shi = x1.shi * x2.shi - x1.xu * x2.xu;
cn.xu = x1.xu * x2.shi + x2.xu * x1.shi;
cn.ComplexShow();
}
public static void ComplexDivide(ComplexNumber x1,ComplexNumber x2){//实现两个复数相除，第一个数除以第二个数
ComplexNumber x2_gong = new ComplexNumber(x2.shi,0-x2.xu);//求被除数的共轭复数
ComplexNumber cn = new ComplexNumber(0, 0);//将两个复数相加等于cn
cn.shi = x1.shi * x2_gong.shi - x1.xu * x2_gong.xu;//x1/x2,求分子实部
cn.xu = x1.xu * x2_gong.shi + x2_gong.xu * x1.shi;//x1/x2,求分子虚部
int fenMu = x2.shi * x2.shi + x2.xu * x2.xu;
if(fenMu!=0){
System.out.print("(");
cn.ComplexShow1();
System.out.print(")");
System.out.println("/"+fenMu);
}
else
System.out.println("分母为零，无法相除");
}
public static void main(String[] args) {
// TODO Auto-generated method stub
ComplexNumber cn = new ComplexNumber(-1, -1);//初始化复数
cn.ComplexShow();//显示复数
ComplexNumber c1 = new ComplexNumber(-1, -1);
ComplexNumber c2 = new ComplexNumber(1, 1);
System.out.print("加：");
ComplexAdd(c1, c2);
System.out.print("减：");
ComplexMinus(c1, c2);
System.out.print("乘：");
ComplexMultiply(c1, c2);
System.out.print("除：");
ComplexDivide(c1, c2);//自己化简
}
}
我编写了一个用于计算两复数的和以及乘积的java程序，如何定义一个result()函数专门用于输出结果？
前面的回答是对的，有几个地方需要修改一下：
1、Add 和 Multiply方法的返回类型需要改成：String
2、result 方法要用static修饰符，即 public static void result(Complex fushu1,Complex fushu2) ，result作为类的静态方法。
3、main方法也要用static修饰符，即 public static void main(String[] args)
完整代码：
public class Complex {
/**
* @param args
*/
private double r;
private double i;
Complex()
{
this(0,0);
}
Complex(double r,double i){
this.r=r;
this.i=i;
}
public /*void*/String Add(Complex p)
{
Complex result=new Complex();
result.r=this.r+p.r;
result.i=this.i+p.i;
System.out.println("1+2i");
System.out.println("3+4i");
//System.out.println("加法结果:"+result.r+"+"+result.i+"i");
return result.r+"+"+result.i;
}
public /*void*/String Multiply(Complex q)
{
Complex result=new Complex();
result.r=this.r*q.r-this.i*q.i;
result.i=this.i*q.r+this.r*q.i;
//System.out.println("乘法结果:"+result.r+"+"+result.i+"i");
return result.r+"+"+result.i;
}
public static void result(Complex fushu1,Complex fushu2)
{
System.out.println("加法结果:"+fushu1.Add(fushu2));
System.out.println("乘法结果:"+fushu1.Multiply(fushu2));
}
public static void main(String[] args) {
// TODO Auto-generated method stub
Complex fushu1=new Complex(1,2);
Complex fushu2=new Complex(3,4);
//fushu1.Add(fushu2);
//fushu1.Multiply(fushu2);
result(fushu1,fushu2);
}
}
编写Java Applet程序，实现复数矩阵的加法，乘法运算
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class fushu extends JFrame{
DComplexNumber x=new DComplexNumber();
DComplexNumber y=new DComplexNumber();
//窗体布局
JLabel Lab1=new JLabel("实部 ");
JLabel Lab2=new JLabel("虚部 ");
JLabel Lab3=new JLabel();
JTextField text1=new JTextField(8);
JTextField text2=new JTextField(8);
JButton btn1=new JButton("设置第一个复数");
JButton btn2=new JButton("设置第二个复数");
JButton btn3=new JButton("+");
JButton btn4=new JButton("-");
public fushu(){
setTitle("复数运算");
Container contentPane=this.getContentPane();
contentPane.setLayout(new GridLayout(4,1));
JPanel panel1=new JPanel();
panel1.add(Lab1);
panel1.add(text1);
panel1.add(btn1);
JPanel panel2=new JPanel();
panel2.add(Lab2);
panel2.add(text2);
panel2.add(btn2);
JPanel panel3=new JPanel();
panel3.add(btn3);
panel3.add(btn4);
JPanel panel4=new JPanel();
panel4.add(Lab3);
contentPane.add(panel1);
contentPane.add(panel2);
contentPane.add(panel3);
contentPane.add(panel4);
registerEventHandlers();
this.pack();
}
//为按钮注册事件
private void registerEventHandlers() {
btndiyifuActionEventHander diyifushu=new btndiyifuActionEventHander();
btn1.addActionListener(diyifushu);
btndierfuActionEventHander dierfushu=new btndierfuActionEventHander();
btn2.addActionListener(dierfushu);
btnjiaActionEventHander jia=new btnjiaActionEventHander();
btn3.addActionListener(jia);
btnjianActionEventHander jian=new btnjianActionEventHander();
btn4.addActionListener(jian);
}
public static void main(String[] args){
fushu fushuys=new fushu();
fushuys.setVisible(true);
}
//第一复数按钮事件
private class btndiyifuActionEventHander implements ActionListener{
public void actionPerformed(ActionEvent e) {
x=new DComplexNumber(Integer.parseInt(text1.getText()),Integer.parseInt(text2.getText()));
text1.setText("");
text2.setText("");
Lab3.setText("第一个复数是"+x.Ttostring());
}
}
//第二复数按钮事件
private class btndierfuActionEventHander implements ActionListener{
public void actionPerformed(ActionEvent e){
y=new DComplexNumber(Integer.parseInt(text1.getText()),Integer.parseInt(text2.getText()));
text1.setText("");
text2.setText("");
Lab3.setText("第二个复数是"+y.Ttostring());
}
}
//加按钮事件
private class btnjiaActionEventHander implements ActionListener{
public void actionPerformed(ActionEvent e) {
ComplexNumber f=new ComplexNumber();
f=DComplexNumber.he(x,y);
Lab3.setText(x.Ttostring()+"+"+y.Ttostring()+"="+f.Ttostring());
}
}
//减按钮事件
private class btnjianActionEventHander implements ActionListener{
public void actionPerformed(ActionEvent e){
DComplexNumber f=new DComplexNumber();
f=DComplexNumber.cha(x,y);
Lab3.setText(x.Ttostring()+"-"+y.Ttostring()+"="+f.Ttostring());
}
}
}
//创建ComplexNumber类
public class ComplexNumber{
public int real;
public int imaginary;
public ComplexNumber(){
}
public ComplexNumber(int a,int b){
real=a;
imaginary=b;
}
public int getReal(){
return real;
}
public void setReal(int mReal){
real=mReal;
}
public int getImaginary(){
return imaginary;
}
public void setImaginary(int mImaginary){
imaginary=mImaginary;
}
public static ComplexNumber he(ComplexNumber X,ComplexNumber Y){
ComplexNumber Complex=new ComplexNumber();
Complex.real=X.real+Y.real;
Complex.imaginary=X.imaginary+Y.imaginary;
return Complex;
}
public String Ttostring(){
return ("("+real+(imaginary0?"-"+imaginary*(-1):"+"+imaginary)+"i"+")");
}
}
//创建DComplexNumber类
public class DComplexNumber extends ComplexNumber{
public DComplexNumber(){
}
public DComplexNumber(int x,int y){
this.real=x;
this.imaginary=y;
}
public static DComplexNumber cha(DComplexNumber X,DComplexNumber Y){
DComplexNumber c=new DComplexNumber();
c.real=X.real-Y.real;
c.imaginary=X.imaginary-Y.imaginary;
return c;
}
}
如何用java程序编写输入两个复数，然后进行那个加减乘，最后显示结果。
例如：ai+b ci+d
加法：int a,b,c,d;int x,y; x=a+c; y=b+d
结果就为：xi+y 这很简单 再输出的时候要变为字符串型 这样你就可以再x后加个i 形成xi的形式了
减法： int a,b,c,d;int x,y; x=a-c; y=b-d
结果就为：xi+y 这很简单 再输出的时候要变为字符串型 这样你就可以再x后加个i 形成xi的形式了
乘法： int a,b,c,d;int x,y;
x=a*d+b*c y=b*d-a*c
结果就为：xi+y 这很简单 再输出的时候要变为字符串型 这样你就可以再x后加个i 形成xi的形式了
java 中实现复数的加减
（1）：具体代码(附注释)
复数类：
public class Complex {
private float shibu;
private float xubu;
Complex()
{this(0,0);
}
Complex(float shibu,float xubu){
this.shibu=shibu;
this.xubu=xubu;
}
public void Add(Complex p)
{
Complex result=new Complex();
result.shibu=this.shibu+p.shibu;
result.xubu=this.xubu+p.xubu;
System.out.print("加法结果为:"+result.shibu+"+"+result.xubu+"i");
}
public void Sub(Complex p)
{
Complex result=new Complex();
result.shibu=this.shibu-p.shibu;
result.xubu=this.xubu-p.xubu;
System.out.print("加法结果为:"+result.shibu+"+"+result.xubu+"i");
}
public void Mul(Complex p)
{
Complex result=new Complex();
result.shibu=this.shibu*p.shibu-this.xubu*p.xubu;
result.xubu=this.shibu*p.xubu+p.shibu*this.xubu;
System.out.print("乘法结果为:"+result.shibu+"+"+result.xubu+"i");
}
public static void main(String[] args) {
Complex fushu1=new Complex(1,2);
Complex fushu2=new Complex(3,4);
fushu1.Add(fushu2);
fushu1.Sub(fushu2);
fushu1.Mul(fushu2);
}
}
（2）：提供一个例子：
源代码：
import java.io.*;
public class Book{
double sb;
double xb;
Book(double x,double y){
this.sb=x;
this.xb=y;
}
Book(){
}
public static void main(String args[]){
System.out.println("请输入数据：");
double a=0;
double b=0;
double c=0;
double d=0;
String s;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.println("请输入第一个复述的实部：");
try{
s = in.readLine();
a=Double.parseDouble(s);
}
catch(IOException e)
{ System.out.println("抛掷异常");}
System.out.println("请输入第一个复述的虚部：");
try{
s = in.readLine();
b =Double.parseDouble(s);
}
catch(IOException e)
{ System.out.println("抛掷异常");}
System.out.println("请输入第二个复述的实部：");
try{
s = in.readLine();
c =Double.parseDouble(s);
}
catch(IOException e)
{ System.out.println("抛掷异常");}
System.out.println("请输入第二个复述的虚部：");
try{
s = in.readLine();
d =Double.parseDouble(s);
}
catch(IOException e)
{ System.out.println("抛掷异常");}
Book h;
h=new Book(a,b);
Book j;
j=new Book(c,d);
System.out.println("您输入的一个数为：");
toString(h);
System.out.println("您输入的二个数为：");
toString(j);
Book k;
k=new Book();
char z='y';
do{
System.out.println("请选择您要进行的计算：");
System.out.println("1 ：进行加法运算");
System.out.println("2 ：进行减法运算");
System.out.println("3 ：进行修改");
System.out.println("4 ：进行乘法运算");
System.out.println("5 ：进行除法运算");
System.out.println("6 ：查看修改结果");
int i=0;
try{
i= Integer.parseInt(in.readLine());
}
catch(IOException e)
{ System.out.println("抛掷异常");}
switch(i)
{
case 1:
k.sb=jia(h.sb,j.sb);
k.xb=jia(h.xb,j.xb);
System.out.println("计算结果的实部为："+k.sb);
System.out.println("计算结果的虚部为："+k.xb);
toString(k);
break ;
case 2:
k.sb=jian(h.sb,j.sb);
k.xb=jian(h.xb,j.xb);
System.out.println("计算结果的实部为："+k.sb);
System.out.println("计算结果的虚部为："+k.xb);
toString(k);
break ;
case 3:
System.out.println("请输入您要修改哪个实数：");
int l=0;
try{
l= Integer.parseInt(in.readLine());
}
catch(IOException e)
{ System.out.println("抛掷异常");}
if(l==1)
{
h.xiugais(h);
h.xiugaix(h);
}
else
{
xiugais(j);
xiugaix(j);
}
break ;
case 4:
double f=0;
double e=0;
f=cheng(h.sb,j.sb)+cheng(h.xb,j.xb);
e=cheng(h.sb,j.xb)+cheng(h.xb,j.sb);
k.sb=(double)(Math.round(f*100)/100.0);
k.xb=(double)(Math.round(e*100)/100.0);
System.out.println("计算结果的实部为："+k.sb);
System.out.println("计算结果的虚部为："+k.xb);
toString(k);
break ;
case 5:
double chushu=cheng(j.sb,j.sb)-cheng(j.xb,-j.xb);
double beichushus=jian(cheng(h.sb,j.sb),cheng(h.xb,-j.xb));
double beichushux=jia(cheng(h.sb,-j.xb),cheng(h.xb,j.sb));
k.sb=chu(beichushus,chushu);
k.xb=chu(beichushux,chushu);
System.out.println("计算结果的实部为："+k.sb);
System.out.println("计算结果的虚部为："+k.xb);
toString(k);
break ;
case 6:
System.out.println("修改后的结果为：");
System.out.println("第一个复数："+toString(h));
System.out.println("第二个复数："+toString(j));
break ;
}
System.out.println("请问您是否还要继续 y/n：");
try{
z=(char)System.in.read();
System.in.skip(2); //忽略回车换行
}
catch(IOException e){}
} while(z=='y');
}
public static double gets(Book a){
return a.sb;
}
public static double getx(Book b){
return b.xb;
}
public static double xiugais(Book a)
{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.println("请输入您要修改的实部：");
double m=0;
try{
m= Double.parseDouble(in.readLine());
}
catch(IOException e)
{ System.out.println("抛掷异常");}
a.sb=m;
System.out.println("修改成功：");
return 0;
}
public static double xiugaix(Book b)
{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.println("请输入您要修改的虚部：");
double n=0;
try{
n= Double.parseDouble(in.readLine());
}
catch(IOException e)
{ System.out.println("抛掷异常");}
b.xb=n;
System.out.println("修改成功：");
return 0;
}
public static double jia(double a,double b)//
{
double c=0;
c=a+b;
System.out.println("加法成功：");
return c ;
}
public static double jian(double a,double b)
{
double c=0;
c=a-b;
System.out.println("减法成功：");
return c;
}
public static double cheng(double a,double b)
{
double c=0;
c=a*b;
System.out.println("乘法成功：");
return c;
}
public static double chu(double a,double b)
{
double d=0;
double c=0;
d=a/b;
c=(double)(Math.round(d*100)/100.0);
System.out.println("除法成功：");
return c ;
}
public static double toString(Book a){
System.out.println("结果为："+a.sb+"+"+a.xb+"*i");
return 0;
}
}
（3）测试结果截图：
用java设计一个MyComplex，该类可完成复数的加减乘除等运算功能。
Java程序：
public class Test31 {
public static void main(String[] args) {
MyComplex m1 = new MyComplex(3.4, 8.0000002);
MyComplex m2 = new MyComplex(3.4, 8.0000002);
MyComplex m3 = new MyComplex(4.4,-8.8999998);
MyComplex m4 = m1.Add(m3);
MyComplex m5 = m1.Subtract(m3);
System.out.println("m1=m2=" + (m1==m2));
System.out.println("m1.equals(m2)=" + (m1.equals(m2)));
System.out.println("m4=" + m4.toString());
System.out.println("m5=" + m5.toString());
}
}
class MyComplex{
protected double real; //实部
protected double image; //虚部
public MyComplex(){
}
public MyComplex(double real, double image){
this.real = real;
this.image = image;
}
public MyComplex Add(MyComplex num){
return new MyComplex(this.real + num.real, this.image + num.image);
}
public MyComplex Subtract(MyComplex num){
return new MyComplex(this.real - num.real, this.image - num.image);
}
public MyComplex Product(MyComplex num){
return new MyComplex(this.real * num.real - this.image * num.image, this.real * num.image + this.image * num.real);
}
public MyComplex Divide(MyComplex num){
return new MyComplex((this.real * num.real + this.image * num.image)/(num.real*num.real+num.image*num.image), (this.image * this.image - this.real * this.real)/(num.real*num.real+num.image*num.image));
}
public boolean equals(MyComplex num){
return (this.real==num.real this.image==num.image) ? true : false;
}
public String toString(){
if(real == 0)
if(image == 0)
return "0";
else if(image 0)
return image + "i";
else
return "-" + image + "i";
else
if(image == 0)
return real + "";
else if(image 0)
return real + "+" + image + "i";
else
return real + image + "i";
}
}
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