?? rectangle.java
字號:
class Rectangle
{
int l,w;
int perimeter()
{
return 2*(l+w);
}
int area()
{
return l*w;
}
public static void main(String[] args)
{
Rectangle rect1=new Rectangle();
Rectangle rect2=new Rectangle();
rect1.l=10;
rect1.w=5;
System.out.println("perimeter of rect1 = "+rect1.perimeter());
System.out.println("area of rect1 = "+rect1.area());
rect2.l=6;
rect2.w=4;
System.out.println("perimeter of rect2 = "+rect2.perimeter());
System.out.println("area of rect2 = "+rect2.area());
}
}
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