Java第五周实验报告2

/*封装一类梯形对象Ladder，该类对象具有上底、下底和高的属性，
具有初始化梯形的功能、修改上底、下底和高的功能、求周长的功能、求面积的
功能。*/
public class shiYan2 {
public static void main(String[] args) {
Ladder ladder = new Ladder();

ladder.set_shangDi(10);
ladder.set_xiaDi(18);
ladder.set_gao(3);

double shangDi = ladder.get_shangDi();
double xiaDi = ladder.get_xiaDi();
double gao = ladder.get_gao();

System.out.println("梯形的上底为:"+shangDi);
System.out.println("梯形的下底为:"+xiaDi);
System.out.println("梯形的高为:"+gao);

double zhouChang = ladder.zhouChang();
double area = ladder.area();

System.out.println("梯形的周长为:"+zhouChang);
System.out.println("梯形的面积为:"+area);

}
}

class Ladder {
public double shangDi;
public double xiaDi;
public double gao;

public Ladder() {
shangDi = 0;
xiaDi = 0;
gao = 0;
} // 初始化梯形

public void set_shangDi(double shangDi) {
this.shangDi = shangDi;
}

public void set_xiaDi(double xiaDi) {
this.xiaDi = xiaDi;
}

public void set_gao(double gao) {
this.gao = gao;
} // 修改上底、下底和高

public double get_shangDi() {
return shangDi;
}

public double get_xiaDi() {
return xiaDi;
}

public double get_gao() {
return gao;
}

public double area() {
double area = (shangDi + xiaDi) * gao / 2;

return area;
}

public double zhouChang() {
double yao = Math.sqrt(((xiaDi - shangDi) / 2 * (xiaDi - shangDi) / 2)
+ gao * gao);

return yao * 2 + shangDi + xiaDi;
}

}

梯形的上底为:10.0
梯形的下底为:18.0
梯形的高为:3.0
梯形的周长为:38.0
梯形的面积为:42.0