public class demo1 |
{ |
private float length; |
private float width; |
|
public demo1( float l, float w) |
{ |
length=l; |
width=w; |
} |
|
public void SetLength( float l) |
{ |
if (length> 0 ) |
length=l; |
else |
System.out.print( "ERROR" ); |
} |
public float GetLength() |
{ |
return length; |
} |
public float GetWidth() |
{ |
return width; |
} |
float area () |
{ |
return length*width; |
} |
float zhouchang () |
{ |
return 2 *(length+width); |
} |
} |
package zuoye2; |
public class demo2 |
{ |
public static void main(String[] args) { |
demo1 rect = new demo1(10f, 20f); |
System.out.println( "长方形的长:" + rect.GetLength()); |
System.out.println( "长方形的宽:" + rect.GetWidth()); |
System.out.println( "长方形的面积:" + rect.area()); |
System.out.println( "长方形的周长:" + rect.zhouchang()); |
} |
} |
中级程序员
by: 云代码会员 发表于:2019-07-30 14:14:02 顶(0) | 踩(0) 回复
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