Nsryjdtyk

Hello fellow StackOverflowers, I hope all of your days are going well.

I'm relatively new to Java programming and have found myself in a bit of pickle.

What I'm attempting to do is;

1. Input Validation in Java - I want to make sure that the JOptionPane.showInput pane continues to re-appear (using a while loop) until the user has entered a value which is captured in the "this.accountName" String and;


2. From there once the user has entered something in the JOptionPane.showInput pane I want to exit the loop and proceed to the other methods I have inside my OO program.

Unfortunately my while loop below exits after the first instance and doesn't continue in my code example below;

public String getAccountName() {

    this.accountName = JOptionPane.showInputDialog(null, "Please enter a nick name for your new account (e.g. Savings Account)");

    if (this.accountName!= null) {

        while (this.accountName != null) {

            this.accountName = JOptionPane.showInputDialog(null, "Error! Please enter a valid name for your new account");

            if (this.accountName.contains("")){return this.accountName;

            }

        }

    }

        return this.accountName;

}

What would be the best way to go about fixing this?
I appreciate your help in advance!

Use StringUtils.isBlank method (https://commons.apache.org/proper/commons-lang/apidocs/org/apache/commons/lang3/StringUtils.html) to check accountName value:

this.accountName = JOptionPane.showInputDialog(null, "Please enter a nick name for your new account (e.g. Savings Account)");

while (StringUtils.isBlank(this.accountName)) {

    this.accountName = JOptionPane.showInputDialog(null, "Error! Please enter a valid name for your new account");

}

return this.accountName;