第三次实验报告

20145217 《Java程序设计》第三次实验报告

内容总结

首先由20145222黄亚其同学进行complex类编写，编写完成后发至自己的shiyansan项目，同时我也是shiyansan项目的管理员有权限进行修改。

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后由我进行complex类测试代码编写，我从实验三项目上下载complex类。

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在完成测试以后，我将代码回传到分支shiyansan1。

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黄亚奇再从shiyan1分支上下载程序代码。

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代码如下：
产品代码

package complex;
public class Complex

{
    double real, unr; //实部和虚部

    public Complex()        //默认构造方法
    {
        this.real = 0;
        this.unr = 0;
    }

    public Complex(double real, double unr)
    {
        this.real = real;
        this.unr = unr;
    }

    public double getReal() {
        return this.real;
    }


    public double getImage() {
        return this.unr;
    }

    public double getReal(Complex c) {
        return c.real;
    }


    public double getImage(Complex c) {
        return c.unr;
    }        //得到复数c的虚部


    public void setReal(double real) {
        this.real = real;
    }        //设置实部


    public void setImage(double unr) {
        this.unr = unr;
    }        //设置虚部


    public Complex addComplex(Complex a, Complex b)    //两个复数相加，结果返回
    {
        Complex temp = new Complex();
        temp.real = a.real + b.real;
        temp.unr = a.unr + b.unr;
        return temp;
    }

    public Complex decComplex(Complex a, Complex b)    //两个复数相减，结果返回
    {
        Complex temp = new Complex();
        temp.real = a.real - b.real;
        temp.unr = a.unr - b.unr;
        return temp;
    }

    public Complex mulComplex(Complex a, Complex b)    //两个复数相乘，结果返回
    {
        Complex temp = new Complex();
        temp.real = a.real * b.real - a.unr * b.unr;
        temp.unr = a.real * b.unr + a.unr * b.real;
        return temp;
    }

    public Complex divComplex(Complex a, Complex b)    //两个复数相除，结果返回
    {
        Complex temp = new Complex();
        temp.real = (a.real * b.real + a.unr * b.unr) / (b.real * b.real + b.unr * b.unr);
        temp.unr = (a.unr * b.real - a.real * b.unr) / (b.real * b.real + b.unr * b.unr);
        return temp;
    }

    public void printComplex()
    {
        System.out.println("" + this.real + "+" + this.unr + "i");
    }
}

测试代码

package complex;
public class Comlextest {
public static void main(String[] args) //测试代码

{
    Complex cc=new Complex(1,2);
    cc.printComplex();
    Complex dd=new Complex(4,3);
    dd.printComplex();
    System.out.println();
    Complex ff=new Complex();

    ff=ff.addComplex(cc,dd);
    ff.printComplex();
    ff=ff.decComplex(cc,dd);
    ff.printComplex();
    ff=ff.mulComplex(cc,dd);
    ff.printComplex();
    ff=ff.divComplex(cc,dd);
    ff.printComplex();
    System.out.println();
    cc.printComplex();
    cc=new Complex(2,5);
    cc.printComplex();
    cc=new Complex(5,8);
    cc.printComplex();
    cc=new Complex(6,8);
    cc.printComplex();
    System.out.println();
    cc.setReal(123);
    cc.setImage(456);
    cc.printComplex();
    System.out.println(""+cc.getReal()+"+"+cc.getImage()+"i");
}
}

git：

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• Java学习笔记(第8版)
• 《Java学习笔记(第8版)》学习指导