Calculate Rectangle Perimeter and Even Odd Number in java

Calculate Rectangle Area

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

public class CalculateRectArea

{

 public static void main(String[] args)

 {

          int width = 0;

int length = 0;

                       

try

{

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));            

System.out.println("Please enter length of a rectangle");

length = Integer.parseInt(br.readLine());

System.out.println("Please enter width of a rectangle");

width = Integer.parseInt(br.readLine());

}

catch(NumberFormatException ne)

{

System.out.println("Invalid value" + ne);

System.exit(0);

}

catch(IOException ioe)

{

System.out.println("IO Error :" + ioe);

System.exit(0);

}

int area = length * width;

System.out.println("Area of a rectangle is " + area);

   }

}

Calculate Rectangle Perimeter

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

 public class CalculateRectPerimeter

{

 public static void main(String[] args)

{

                

int width = 0;

int length = 0;

 try

{

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

System.out.println("Please enter length of a rectangle");

length = Integer.parseInt(br.readLine());

System.out.println("Please enter width of a rectangle");

width = Integer.parseInt(br.readLine());

}

catch(NumberFormatException ne)

{

System.out.println("Invalid value" + ne);

System.exit(0);

}

catch(IOException ioe)

{

System.out.println("IO Error :" + ioe);

System.exit(0);

}

int perimeter = 2 * (length + width);

System.out.println("Perimeter of a rectangle is " + perimeter);

   }

}

Even Odd Number

public class FindEvenOrOddNumber

{

 public static void main(String[] args)

{

 int[] numbers = new int[]{1,2,3,4,5,6,7,8,9,10};

                 

for(int i=0; i < numbers.length; i++)

{

if(numbers[i]%2 == 0)

System.out.println(numbers[i] + " is even number.");

else

System.out.println(numbers[i] + " is odd number.");

  }

}

                   }