java basics @ mlab, 15-19 Nov 1999, juhuu@katastro.fi




 if 

 
	if  (condition)
	{
		do something;
	}



	example:

	if (a > 100)
	{
		a = 0;
	}



	different conditions:

	==		equal

	!=		inequal

	>		greater than

	>=		equal or greater than
	
	<		less than

	<=		equal or less than
	

	to combine these you can use

	&&		AND

	||		OR


	examples:

	if ( a == b && b == c)
	{
		// if a is equal to b AND b is equal to c
	}	


	if ( a == b || b == c)
	{
		// if a is equal to b OR b is equal to c
	}	





 if - else



	if  (condition)
	{
		do something;
	} else {
		do something else;
	}


	or


	if  (condition)
	{
		do something;
	}  else if  (condition2)  {
		do something else;
	}  else {
		do something else;
	}
 




 while



	while  (condition)
	{
		do something;
	}






 for


	for is short for:

	initialize something;
	while  (condition)
	{
		do something;
		iterate;
	}



	syntax:

	for  ( initialization  ;  condition  ;  iteration)
	{
		do something;
	}



	example:

	for  (int i = 1  ;  i  <=  100  ;  i++)
	{
		System.out.println("" + i);
	}

	this routine prints out numbers from 1 to 100.
	i++ is the same thing as i = i + 1.





	you can break out from a while/for loop with break command

	example:

	while (condition)
	{
		do something;
		if (condition2)
		{
			break;
		}
	}