e0902.java

java小程序

public class E0902 extends Shape
{
private int a,b;
public E0902()
{
a=0;b=0;
}
public void setE0902(int a,int b)
{
this.a=a;
this.b=b;
}
public double perimeter()
{
return (a+b)*2;
}
public String getType()
{
return ("矩形");
}
public static void main(String args[])
{
double l;
String str;
E0902 e=new E0902();
e.setE0902(10,20);
l=e.perimeter();
str=e.getType();
System.out.println(str+"周长为："+l);
}

}