CODEWITHSUNDEEP
javastringjpasswordfield
Kym NT
Kym NT

Reputation: 790

Getting String equivalent of input in jPasswordField

I have a code which checks if the user input is ALphanumeric only and checks the strength of the password inputted based on a criteria. A label will appear with a note if:

-Field is empty

-invalid character is used

and also displays if password is WEAK, MEDIUM, STRONG, and VERY STRONG

this.AlphaNumericOnly(this.jTextField1.getText(),this.warningLbl3);
this.passwordStrength(this.jTextField1.getText(),this.warningLbl4);

This method works fine if used in a jtextfield. However I want to use a jpasswordfield to hide user input.

I've already tried:

.toString();

String.valueOf();

and this loop:

char[] input=(this.jPasswordField1.getPassword());
 final_pass = "";
    for(char x : input) {
     final_pass += x;
    }

But the method cannot "check" the string I converted.

Here are my methods..

public void AlphaNumericOnly(String input,JLabel obj){
if(!"".equals(input)){
    obj.setText(" ");
    warning=false;

    char c[] = input.toCharArray();

    int count = 0;
    for(int x=0; x<c.length; x++){
        if((!Character.isAlphabetic(c[x]))&&(!Character.isDigit(c[x]))){// && c[x]!='-' && c[x]!='(' && c[x]!=')' && c[x]!='+'&& c[x]!='/'&& c[x]!='\\'){
            count=+1;        
        }
    }
    if(count>0){
        obj.setText("*Please use valid characters.");
        warning=true;
    }else{
        obj.setText(" ");
        warning=false;
    }
}else{
    obj.setText("*This Field cannot be left Empty.");
    warning=true;
}   
}
private void passwordStrength(String input,JLabel obj){
   char c[] = input.toCharArray();
   int count=0;
   int notAlphaNumericCount=0;
   for(int j=0;j<c.length;j++){
       if(Character.isAlphabetic(c[j])){
            if(Character.isUpperCase(c[j])){
                count++;
            }
       }else if(Character.isDigit(c[j])){

       }else{
         obj.setText(" ");
         warning=false;
         notAlphaNumericCount++;
       }
   }
if(notAlphaNumericCount==0){   
    if(input.length()<1){
        obj.setText(" ");
        warning=false;
    }else if(input.length()<4){
        obj.setText("Password Strength: WEAK");
        obj.setForeground(Color.red);
    }else if(input.length()<8){
        obj.setText("Password Strength: MEDIUM");
        obj.setForeground(Color.blue);
    }else if(input.length()<10){
        obj.setText("Password Strength: STRONG");
        obj.setForeground(Color.green);
    }else if(count!=0){    
        obj.setText("Password Strength: VERY STRONG");
        obj.setForeground(Color.orange);
    }
}
}

EDIT: for a more visual understanding here is how I use this method:

username [Textfield input]- [obj label warning]
password [Textfield input]- [obj label warning]

          [obj label which displays password strength]

Upvotes: 0

Views: 4676

Answers (1)

kucing_terbang
kucing_terbang

Reputation: 5131

well, as the returning value of getPassword() function is char array. you could easily convert it into a string via its constructor.

new String(this.jPasswordField1.getPassword());

though, personally, I think it would be better to change the passwordStrength method's arguments to take a char array instead of String. because you only use the argument input to convert it into a char array and to get its length. And also, you will create a new String object every time you construct a String via this way.

Upvotes: 2

Related Questions