29 lines
637 B
Java
29 lines
637 B
Java
package com.ex4;
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public class Table extends Sobject{
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private double width; //宽度
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private double length; //长度
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private double height; //高度
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//如果该类不写构造方法，系统会自动为 Table添加一个无参数的构造方法
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//在这个无参构造方法中，会自动调用Sobject类中的无参数的构造方法
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// public Table() {
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// super();
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//// super("abc",34.5);
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// }
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//
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public Table(String name,double weight,double width,double length,double height) {
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super(name, weight);
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this.width=width;
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this.length=length;
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this.height=height;
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}
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public double area() {
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return width*length;
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}
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public void changeWeight(double w) {
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setWeight(w);
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}
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}
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