import java.util.Scanner;
public class Rectangle
{
public static void main(String[] args)
{
-Don't know how to call method here-
}
/**
* returns the area of a rectangle
* @param height the height of the rectangle
* @param width the width of the rectangle
*/
public static int area (int length, int width)
{
return length * width;
}
/**
* returns the perimeter of a rectangle
* @param height the height of the rectangle
* @param width the width of the rectangle
*/
public static int perimeter (int length, int width)
{
return length + width;
}
/**
* returns the details of the rectangle
* @param height the height of the rectangle
* @param width the width of the rectangle
*/
public static void printRectangleDetails (int length, int width)
{
System.out.println ("This is the length of the rectangle " + length);
System.out.println ("This is the width of the rectangle " + width);
System.out.println (("This is the perimeter of the rectangle " + (length + width)));
System.out.println (("This is the area of the rectangle " + (length * width)));
}
/**
* Read in an integer and return its value
* @param the prompt to be shown to the user
*/
public static int readInteger(String prompt)
{
Scanner scan = new Scanner(System.in);
System.out.println("Enter an integer");
int input = scan.nextInt();
return input;
}}
我尝试调用方法readInteger来提示用户插入矩形的高度和宽度。这是我第一次使用方法,所以如果有任何帮助,我将不胜感激,我也不确定readInteger方法是否正确。
谢谢!
发布于 2012-11-23 13:09:10
在main()方法中,可以通过调用在Rectangle类中创建的readInteger()方法来读取矩形的长度和宽度,如下所示:
int length = readInteger(" For Length ");
int width = readInteger("For Width ");
printRectangleDetails(length,width);首先,将这一行添加到readInteger()方法中:
System.out.println (prompt);发布于 2012-11-23 12:48:26
通常使用以下语法调用方法:
methodName();示例:
要调用面积方法,您可以这样说:
public static void main(String[] args)
{
area(2,3);
}注意:这个对象在本例中是隐含的,因为你的area方法对于包含main方法的rectangle类来说是公共的和静态的。
如果area在不同的类中,您可以通过不同的方式调用方法,首先实例化,然后在对象上调用方法。
发布于 2012-11-23 13:07:49
尝尝这个
public static void main(String[] args) {
Scanner s= new Scanner(System.in) ;
System.out.print("Enter length : " );
int len=Integer.parseInt( s.nextLine()) ;
System.out.print("\nEnter width : ");
int wd=Integer.parseInt( s.nextLine()) ;
printRectangleDetails(len,wd);
}https://stackoverflow.com/questions/13523241
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