实验三 类和对象.doc

/实验三第一题源程序class Student private String name;private int age;private String specialty;public Student(String name,int age,String specialty) =name; this.age=age; this.specialty=specialty; public String getname() return name;public void setname(String name) =name;public int getage()return age;public String specialty()return specialty; public void printValues() System.out.println(名字为name); System.out.println(年龄为age); public class SSpublic static void main(String args) Student s1=new Student(jack,20,); s1.printValues();/实验三第二题源程序class Point public double x, y; public Point (double u, double v) setX(u); setY(v); void setX(double x1) x=x1; void setY(double y1) y=y1;double getX() return x; double getY() return y; Point getmid(Point s) double midX=(x+s.getX()/2;double midY=(y+s.getY()/2;return new Point(midX, midY); void show() System.out.println(点的坐标:+x+,+y); class Dian public static void main(String args) Point s1 = new Point(4.0, 6.0); Point s2 = new Point(8.0, 3.0); s1.show(); s2.show(); Point s = s1.getmid(s2); s.show(); /实验三第三题源程序（复数及运算） class Complex int x; int y; void Complex(int i,int j) x=i; y=j; void ShowComp() if(y0) System.out.println(x+y+i);else if(y=0)System.out.println(+x); else System.out.println(+x+y+i); public class Fs public static Complex addComp(Complex C1,Complex C2) Complex C=new Complex(); C.x=C1.x+C2.x; C.y=C1.y+C2.y; return C; public static Complex subComp(Complex C1,Complex C2) Complex C=new Complex(); C.x=C1.x-C2.x; C.y=C1.y-C2.y; return C; public static Complex multiComp(Complex C1,Complex C2) Complex C=new Complex();C.x=C1.x*C2.x-C1.y*C2.y; C.y=C1.x*C2.y+C1.y*C2.x; return C; public static boolean equalComp(Complex C1,Complex C2) boolean a; if(C1.x=C2.x&C1.y=C2.y) a=true;else a=false;return a; public static void main(String args) boolean a; Complex C1=new Complex(); Complex C2=new Complex(); Complex C3=new Complex(); Complex C4=new Complex(); Complex C5=new Complex(); C1.Complex(1,5); System.out.print(复数1是：); C1.ShowComp(); C2.Complex(3,-8); System.out.print(复数2是：); C2. ShowComp(); System.out.print(两复数的和是：); C3=addComp(C1,C2); C3.ShowComp(); System.out.print(两复数的差是：); C4=subComp(C1,C2); C4.ShowComp();