Learn Programming in Java - Lesson 11 : While Loops

Lesson 11 pick up where lesson 10 left off - exploring iterative structures in Java. This time we look at the while loop first by comparing / contrasting it to the for loop, and then by showing you its flexibility. We'll demonstrate the three common loop patterns the pre-test, post-test and mid-test by writing the same program 3 different ways.

[Osman.Kozlica]

Thank you Michael, you are great :) Well done and best regards for you.

[triciaelisaquinoblanca]

Great Video about while loop very good!

[paamalamadingdong]

Why if youre using 'printf' in the following while loop is it returning a new line after each guess?
while (attempt < 10) {
System.out.printf("Attempt %d : Your Guess ==> ", attempt);
guess = input.nextInt();
attempt++;
}

[smithcodes]

Can we modify the program such that if we type a number which we already typed before, will show a message "You have already guessed the number."     ??

[guitarismylife]

Hi my random generator=new generator (); there is a red underline of random is there any import for random???

[sriharisridhar]

How to stop incrementing an attempt after a particular point.

I finally i want to say that you took this much attempts. But it keeps incrementing.
here is the code:

package whileloop;

import java.util.Random;
import java.util.Scanner;


public class Whileloop {


public static void main(String[] args) {
Scanner input= new Scanner(System.in);
Random generator=new Random();
int attempt=1;
int
int guess=0;
System.out.println(comguess);

do{
System.out.printf("Attempt %d, I guessed a number. Can you find it? \n", attempt);
guess=input.nextInt();

attempt++;
}while(guess!=comguess);
System.out.printf("Correct! You took %d attempts! \n", attempt);

}

}

[johnkings]

Hi Michael, please i have a question regarding this code. int number = generator.nextInt(10) +1; What is the function of +1?

[umnikos]

7:43 No! This is not between 1 and 10, this is between 1 and