help with making a password checker in java
- by Cheesegraterr
Hello, I am trying to make a program in Java that checks for three specific inputs. It has to be 1. At least 7 characters. 2. Contain both upper and lower case alphabetic characters.
3. Contain at least 1 digit.
So far I have been able to make it check if there is 7 characters, but I am having trouble with the last two. What should I put in my loop as an if statement to check for digits and make it upper and lower case. Any help would be greatly appreciated.
Here is what I have so far.
import java.awt.*;
import java.io.*;
import java.util.StringTokenizer;
public class passCheck
{
private static String getStrSys ()
{
String myInput = null; //Store the String that is read in from the command line
BufferedReader mySystem; //Buffer to store the input
mySystem = new BufferedReader (new InputStreamReader (System.in)); //creates a connection to system input
try
{
myInput = mySystem.readLine (); //reads in data from the console
myInput = myInput.trim ();
}
catch (IOException e) //check
{
System.out.println ("IOException: " + e);
return "";
}
return myInput; //return the integer to the main program
}
//****************************************
//main instructions go here
//****************************************
static public void main (String[] args)
{
String pass; //the words the user inputs
String temp = ""; //holds temp info
int stringLength; //length of string
boolean goodPass = false;
System.out.print ("Please enter a password: "); //ask for words
pass = getStrSys (); //get words from system
temp = pass.toLowerCase ();
stringLength = pass.length (); //find length of eveyrthing
while (goodPass == false)
{
if (stringLength < 7)
{
System.out.println ("Your password must consist of at least 7 characters");
System.out.print ("Please enter a password: "); //ask for words
pass = getStrSys ();
stringLength = pass.length ();
goodPass = false;
}
else if (something to check for digits)
{
}
}
