java接口与实现接口的类实验报告

@Override
publicintcompare(Personp1, Personp2) {
//TODO自动生成的方法存根
pareTo(p2.birthday);
}
}
packageperson;
import
publicclassCompareAgeimplementsComparator<Person>{
IShapeshape=null;
shape=newCircle("圆形",3);
System.out.println(shape.toString());
shape=newSquare("正方形", 4);
System.out.println(shape.toString());
shape=newTriangle("三角形", 3, 4, 5);
super();
=name;
this.idCard=idCard;
this.birthday=birthday;
this.sex=sex;
this.age=age;
}
}
packageperson;
import
publicclassCompareNameimplementsComparator<Person>{
}
publicdoublegetB() {
returnb;
}
publicvoidsetB(doubleb) {
this.b=b;
}
publicdoublegetC() {
returnc;
}
publicvoidsetC(doublec) {
this.c=c;
}
publicdoublearea() {
//TODOAuto-generated method stub
}
System.out.println("\n按年龄排序后顺序为:");
Arrays.sort(person,newCompareAge());
for(inti=0;i<n;i++) {
System.out.println("姓名:"+person[i].name+"性别:"+person[i].sex+"年龄:"+person[i].age+"生日:"+person[i].birthday);
=name;
}
publicdoublegetA() {
returna;
}
publicvoidsetA(doublea) {
this.a=a;
}
@Override
publicdoublearea() {
//TODO自动生成的方法存根
returna*a;
}
@Override
publicdoublelength() {
this.c=c;
}
publicString getName() {
returnname;
}
publicvoidsetName(Stringname) {
=name;
}
publicdoublegetA() {
returna;
}
publicvoidsetA(doublea) {
this.a=a;
实验成绩
任课教师签名
person[1]=newPerson("李四","1234","1995年4月3日",'男', 23);
person[2]=newPerson("王五","2589","1997年3月5日",'男', 21);
person[3]=newPerson("赵丽","3698","1998年2月5日",'女', 20);
privateStringname;
privatedoublea;
privatedoubleb;
privatedoublec;
publicTriangle(Stringname,doublea,doubleb,doublec) {
super();
=name;
this.a=a;
this.b=b;
}
System.out.println("\n按生日排序后顺序为:");
Arrays.sort(person,newCompareBirthday());
for(inti=0;i<n;i++) {
System.out.println("姓名:"+person[i].name+"性别:"+person[i].sex+"年龄:"+person[i].age+"生日:"+person[i].birthday);
}
packageperson;
import
publicclassPersonText {
publicstaticvoidmain(String[]args) {
//TODO自动生成的方法存根
intn=5;
Person[]person=newPerson[n];
person[0]=newPerson("张三","4569","1996年6月6日",'男', 22);
doublel=(a+b+c)/2;
returnMath.sqrt(l*(l-a)*(l-b)*(l-c));
}
publicdoublelength() {
//TODOAuto-generated method stub
returna+b+c;
}
@Override
publicString toString() {
@Override
publicintcompare(Personp1, Personp2) {
//TODO自动生成的方法存根
pareTo();
}
}
packageperson;
import
publicclassCompareBirthdayimplementsComparator<Person>{
//TODO自动生成的方法存根
returnMath.PI*r*2;
}
@Override
publicStringtoString() {
//TODO自动生成的方法存根
returnname+"周长是："+length()+","+"面积是："+area();
}
}
packagejiekoushape;
publicclassSquareimplementsIShape {
}
publicdoublegetR() {
returnr;
}
publicvoidsetR(doubler) {
this.r=r;
}
@Override
publicdoublearea() {
//TODO自动生成的方法存根
returnMath.PI*Math.pow(r, 2);
}
@Override
publicdoublelength() {
System.out.println(shape.toString());
}
}
实验结果：
实验总结（结论或问题分析）：
本次实验，主要是对接口、ng包中的基础类库和java.util包中的工具类库的使用，其中最难得就是使用Comparator<T>对Person类进行排序，通过查阅资料了解了Comparator如何使用，受益匪浅。
//TODO自动生成的方法存根
return4*a;
}
@Override
publicStringtoString() {
//TODO自动生成的方法存根
returnname+"周长是："+length()+","+"面积是："+area();
}
}
packagejiekoushape;
publicclassTriangleimplementsIShape {
}
System.out.println("\n按姓名排序后顺序为:");
Arrays.sort(person,newCompareName());
for(inti=0;i<n;i++) {
System.out.println("姓名:"+person[i].name+"性别:"+person[i].sex+"年龄:"+person[i].age+"生日:"+person[i].birthday);
person[4]=newPerson("宋月","5869","1998年1月1日",'女', 20);
System.out.println("原来顺序为:");