public class examples

$\{$

public static void main$($String args$[])$

$\{$

square sq $=$ new square$($new square$(3).$getArea$())$;

square sq$2=$ new square$(7)$;

System.out.println$($square$.$number$+""+$sq$.$getArea$())$;

$\}$

$\}$

class square

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private int length;

public static int number;

square$($int a$)$

$\{$

length $=$ a;

number$++$;

$\}$

public int getArea$()$

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return length $*$ length;

$\}$

public int getLength$()$

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return length;

$\}$

public void setLength$($int i$)$

$\{$

length $=$ i;

$\}$

$\}$