How to make a Password Generator in Java

This is a beginner-friendly tutorial on a java program that randomly generates passwords with numbers, lower case characters, and upper case characters.
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[@raulcrespo8563]

great tutorial! now im trying to give this some functionalities, like choose if you want only lowercases, not numbers etc. as well as implementing anagrams from words user inputs! thank you

[@pritisinghvi2472]

Very good coding. One thing I would change is to add numbers and symbols to make the password more secure.

[@CodingWithTim]

I added numbers, but yea you can also add symbols to my code. Just create another String variable and store the symbols you want to include similar to the way you did for the alphabet.

[@pritisinghvi2472]

@@CodingWithTim Aw shoot didn't see that. Still, very nice job. You earned a sub.

[@Tod357]

@@pritisinghvi2472 and dont forget to change 3 to 4

[@gaiusmarius6291]

Hi Tim, QQ: I noticed that the password generator does not generate other numbers besides 0.

[@CookeiCutter]

Late reply, but change the 0 to 10 in the (int)(0 * Math.random()) in the switch case 0

[@JoseMartinez-tj1oj]

Thank you so much, this will help me a lot with my university's assignment!

[@skbionic6115]

great tutorial, appreciate it

[@rachelquijano632]

In your current code the number outputted will always be zero because of 0 * Math.random(), it should be 10 * Math.random(). Hope this helps!

[@akhileshkumartyagi9932]

Great video , this will help me a lot

[@SorryDaSlayer]

mine will not outprint the password can you help me?

[@SorryDaSlayer]

Heres the code I dont need the random letters or lowercase just the numbers

[@SorryDaSlayer]

package generat1000passwords; import java.util.Scanner; public class Generate1000Passwords3 { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("Enter password length 1 - 9 "); System.out.println(" Minimum : 100000000 "); System.out.println("Maximum : 999999999 "); String password = ""; //input int passLength = input.nextInt(); //processing for (int i = 0; i < passLength; i++) { int randomNumber = (int) (Math.random() * 9) + 1; } //output System.out.println(password); } }

[@SorryDaSlayer]

this is the outcome it gives me : Enter password length 1 - 9 Minimum : 100000000 Maximum : 999999999 4 BUILD SUCCESSFUL (total time: 1 second)

[@CodingWithTim]

​@@SorryDaSlayer you got an error because you didn't store the randomNumber you calculated into the password variable. You need to add password += String.valueOf(randomNumber); 1 line after int randomNumber = (int) (Math.random() * 9) + 1; in the for loop

[@peddiramya8563]

Why did you take 3* in the line of int rand

[@andrewijaya2162]

int rand = (Int)(3*math.random()); can you tell what this (int) does ?

[@CodingWithTim]

(int) casts the value behind it into an integer

[@funkyprogrammer2996]

can u tell me why you multiplied "math.random by 3" @@CodingWithTim

[@AK-nu9up]

Is it good for external project

[@DoomDilemma]

thanks good tutorial 👍

[@valjohn6870]

I want to do this with just 6 Upper Case letters and create an interface, for it as well

[@dipmalakathale8147]

error: cannot find symbol pass += String.valueof((int)(0 * Math.random())); how to solve this error

[@SM.2003]

valueOf() syntax error

[@InapplicableClient]

How to code one's own random method

[@germescraft]

LOVE YOU thanks a lot thanks a lot thanks a lot thanks a lot thanks a lot

[@mehmetsevilla3147]

Thanks

[@gundamfortress]

Sorry, but there are plenty of better basic methods to generate a password in Java... 😒

[@Phaminh-Cinematography]

What the hell lol