Thread: (while) insted of (try and catch)

Originally Posted by Bryan

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Although he could easily google a while loop, the problem is with this piece of code. If he doesn't understand what is happening then googling a while loop wont help that much.

b109 -

I don't understand why you are looking for a while loop? The try/catch is catching the exception generated here: System.out.println(i/j);

Without this piece of code, the exception is never generated.

The program is executed from the main method. What are you trying to achieve with a while loop? More information is needed.

An example of a while loop is this:

public class WhileLoopExample {
 
	public static void main(String[] args) {
 
		boolean myBoolean = true;
 
		while(myBoolean){
 
			System.out.println("JavaProgrammingForums.com");
 
		}
 
	}
 
}

This code will keep printing JavaProgrammingForums.com to the console until the myBoolean value is changed to false.

well, there is the whole issue of looping. try/catch blocks execute the code inside them only once/call. Also, try/catch blocks are fairly slow (depending on the situation, can take milli-seconds where simple value checking using if/else or other conditionals are maybe an order or two of magnitude faster). If you want a pseudo replacement for try/catch, use if/else statements for the comparisons and handle the code flow as needed.

The only time you really should be using try/catch blocks is when there is a situation that you don't want a method to handle a certain type of situations, usually from bad data passed in.