(while) insted of (try and catch)

Hi, could someone help please.

I need to know how to use while statement instead of try and catch to execute this program please help .

Code :

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
package testtrycatch;
 
/**
 *
 * @author group4
 */
public class Main {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
       int i =1;
       int j =0;
 
 
       try { System.out.println("Try block entered " +"i = " + i +" j = " +j);
 
             System.out.println(i/j);
 
             System.out.println("Ending try block");
       }
 
       catch (ArithmeticException e)
       {    System.out.println("Arithmetic exception caught ");
 
       }
       System.out.println("After try block ");
       return;
    }
 
}

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Quote:

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Originally Posted by Bryan

Link
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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:

Code :

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

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

why dun wanna use try catch

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.

Good answer helloworld :)

// Json

i see. thankyou for your enlightenment :D