我是新手不知道说的对不对我用 j2sdk1.4.2_04 系统是:win2000server 编辑工具ultraedit-32 代码如下:class Rect { int l, w; int p() { return 2*(l+w); } int a() { return l*w; } public static void main(String[] args) { Rect rect1=new Rect(); Rect rect2=new Rect();
rect1.l=10; rect1.w=20; System.out.println("p of rect1"+rect1.p()); System.out.println("a of rect1"+rect1.a()); } }
{
int l, w;
int p()
{
return 2*(l+w);
}
int a()
{
return l*w;
}
public static void main(String[] args)
{
Rect rect1=new Rect();
Rect rect2=new Rect();
rect1.l=10;
rect1.w=20;
System.out.println("p of rect1"+rect1.p());
System.out.println("a of rect1"+rect1.a());
}
}
你的环境变量设置好了吗?