合肥学院JAVA期末考试.doc

class Complex { private double x,y; public Complex() { } public Complex(double a,double b) { x=a; y=b; } public void showComp() { System.out.print(x); if(y=0) System.out.print(++y+i); else System.out.print(y+i); } public Complex addComp(Complex a,Complex b) { Complex comp=new Complex(); comp.x=a.x+b.x; comp.y=a.y+b.y; return comp; } public Complex subComp(Complex a,Complex b) { Complex comp=new Complex(); comp.x=a.x-b.x; comp.y=a.y-b.y; return comp; } public Complex mulComp(Complex a,Complex b) { Complex comp=new Complex(); comp.x=a.x*b.x-a.y*b.y; comp.y=a.x*b.y+a.y*b.x; return comp; } public boolean equalComp(Complex a,Complex b) { if(a.x==b.xa.y==b.y) return true; else return false; } } public class Fushu { public static void show(String str,Complex c) { System.out.print(str+: ); c.showComp(); System.out.println(); } public static void main(String[] args) { Complex comp1=new Complex(8,5); Complex comp2=new Complex(4,-9); Complex comp3=new Complex(); boolean bool; show(comp1,comp1); show(comp2,comp2); comp3=comp3.addComp(comp1,comp2); System.out.print(相加后); show(comp3,comp3); comp3=comp3.subComp(comp1,comp2); System.out.print(相减后); show(comp3,comp3); comp3=comp3.mulComp(comp1,comp2); System.out.print(相乘后); show(comp3,comp3); bool=comp3.equalComp(comp1,comp2); if(bool) System.out.println(comp1与comp2相等); else System.out.println(comp1与comp2不相等); } } import?java.awt.*;import?java.awt.event.*;public?class?Cacu?extends?Frame?implements?ActionListener{private?Button?add1?=?new?Button(+);private?Button?sub?=?new?Button(-);private?Button?plus?=?new?Button(*);private?Button?div?=?new?Button(/);private?TextField?t1?=?new?TextField(12);private?TextField?t2?=?new?TextField(12);private?TextField?t3?=?new?TextField(12);private?Label?p1?=?new?Label(操作数);private?Label?p2?=?new?Label(操作数);private?Label?p3?=?new?Label(结果);private?class?