java计算矩形的周长，java计算矩形周长,下面的代码实现计算矩形的

java计算矩形的周长，java计算矩形周长,下面的代码实现计算矩形的

下面的代码实现计算矩形的周长，首先我们要求用户输入矩形的长度和宽度，然后计算矩形的周长并打印出来

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;/** * * @author byrx.net */public class Main {    /**     * 计算矩形的周长     */    public static void main(String[] args) {        int width = 0;        int length = 0;        BufferedReader reader = null;        try {            reader = new BufferedReader(new InputStreamReader(System.in));            //get the width and height of the rectangle from the user            System.out.println("Please enter length of a rectangle");            length = Integer.parseInt(reader.readLine());            System.out.println("Please enter width of a rectangle");            width = Integer.parseInt(reader.readLine());        } catch (NumberFormatException nfe) {            nfe.printStackTrace();            System.exit(0);        } catch (IOException ioe) {            ioe.printStackTrace();            System.exit(0);        } finally {            try {                reader.close();            } catch (IOException ioe) {                ioe.printStackTrace();            }        }        int perimeter = 2 * (length + width);        System.out.println("The rectangle perimeter is " + perimeter);    }}