创建一个桌子Table 类,该类中有桌子名称、重量、桌面宽度、长度
及桌子高度属性。其中有:
a.构造函数初始化所有数据成员
b.Area() :计算桌面的面积
c.Display(): 在屏幕上输出所有数据成员的值
d.ChangeWeight(int ):改变桌子重量的函数
e.在main()中实现创建一个桌子对象,计算桌面的面积,改变桌子重量,
并在屏幕上输出所有桌子数据成员的值。

 

public class Table{

 private String tableName;

 private float tableWeight;

 private float tableLength;

 private float tableWidth;

 private float tableHeigth;

 

 public Table(String name,float weight,float length,float width,float heigth)

 {

  tableName=name;

  tableWeight=weight;

  tableLength=length;

  tableWidth=width;

  tableHeigth=heigth;

 }

 

 public void area()

 {

  System.out.println("the area is:"+tableLength*tableWidth); 

 }

 

 public void display()

 {

  System.out.println("Name:"+tableName+",Weight:"+tableWeight+",Length:"+tableLength+",Width:"+tableWidth+

   ",Height:"+tableHeigth);

 }

 

 public void changeWeight(int w)

 {

  tableWeight=w;

 }

  

}class Test{

 public static void main(String [] args){

  Table tb=new Table("haha",20f,10f,10f,1.5f);

  tb.area();

  System.out.println("the value of table is:");

  tb.display();

  tb.changeWeight(666);

  System.out.println("!now the value of table is:");

  tb.display();

 }

}