How to get inputs from JTextField similar to Scanner.next()?

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I've been trying to figure out how to receive string and integer inputs from pressing "Enter" in a JTextField. I want it to be similar to how Scanner.next() receives an input - the program "waits" until an input is given, the it is stored appropriately for further uses. I want to be able to do this because my program asks the user for an input then it displays corresponding texts. Quick example:

  • PROGRAM: "What is your name?"
  • USER: (types in name and hits enter)
  • PROGRAM: "Welcome, (user's input)."

I can extract the contents of a JTextField from a button press, but I don't know how to have the program "wait" for an input ("wait" until the enter is pressed).

public static String getStringInput(String prompt)
{
    console.append(prompt);

    String input;

    //Here I need to get the input from a JTextField after I've pressed 
    //enter.

    return input;
}

If anyone knows a better way to do this input and response system, that'd be very nice.

thanks.


Don't let the program wait. This is a JFrame application, not a command line tool, so don't use the mindset of writing command line tools when you develop something that involves a window. Imagine what will happen if the program just stopped and waits after the line String input;. The window will freeze and events won't be handled, which is a very bad user experience.

I suggest you do everything inside the event handler for the button click.

// at class level
String[] prompts = new String[] { "prompt1", "prompt2", "prompt3" };
int currentPrompt = 0;

// inside the event handler
String text = textfield.getText();
switch (currentPrompt) {
    case 0:
        // text contains the input for prompt1
    case 1:
        // text contains the input for prompt2
    case 2:
        // text contains the input for prompt3
}

Inside the switch cases, you could advance to the next prompt by:

currentPrompt++; // or set it equal to some other number if you wan to jump around
promptLabel.setText(prompts[currentPrompt]);
textField.setText("");

How to get inputs from JTextField similar to Scanner.next()?, If the user inputs a number other than 1 through 7, have the default issue an Each iteration should use the previous value of this term to compute the next term​, This exercise introduces you to the use of a JTextField object to get input from​  TextField, also known as UITextField, is one of the most commonly-used components in UIKit. Without TextField, you can’t input your email, password, or information. Without these, you won’t be


One way to go is with JOptionPane.showInputDialog. Application "stops" with a modal dialog, and you grab his input very easy.

Example:

//returns null if user closes the dialog.
String answer = JOptionPane.showInputDialog("What is your first name?");

Java by Dissection, Usual scripts have to react on non-convertible values with extra dialogue. In NSP these and similar problems are tackled from the outset. Consider the following examples. 1 <input widget="textfield" param="s" entry="required"></input> 2 <​input exist no canonical mapping of an undefined value into a Java primitive type. TextField in flutter is a widget that helps you to get user inputs from the keyboard. It is similar to the input type “text” in HTML. In this article, we go through various arguments used in a…


Firstly, I think you have to add a listener to your text box. If you are using JTextField, it would be:

JTextField text = new JTextField();
text.addKeyListener(new KeyListener {
    @Overwrite
    public void keyPressed(event e) {
        if(e.keyCode = SWT.CR) { // SWT.CR is key code of Enter
            // Call your function
        }
    }
}

The program will listen to the keyboard event. When you press ENTER, the function inside the listener will run.

Next Generation Information Technologies and Systems: 5th , For example, we do not have the option of telling FlowLayout to place a JLabel adjacent to its - corresponding JTextField. Grid Layout works much like FlowLayout in that we simply add objects to the pane, and it places those objects The top row contains column headings, and the next row contains a labeled input field  We would like to know how to create Multiple input in JOptionPane.showInputDialog. import javax.swing.JTextField; / / w w w. j a v a 2 s. c o m public class Main


Programming and Problem Solving with Java, If you need to obtain more than one line of input from the user, use a text area. JFormattedTextField, A JTextField subclass that allows you to specify the legal small buttons that enables the user to choose the previous or next available value. text fields are very flexible and can be customized almost any way you like. Because the JTextField class inherits from the JTextComponent class, text fields are very flexible and can be customized almost any way you like. For example, you can add a document listener or a document filter to be notified when the text changes, and in the filter case you can modify the text field accordingly.


How to Use Text Fields (The Java™ Tutorials > Creating a GUI With , Prev Class · Next Class setInputVerifier(new PassVerifier()); JTextField tf2 = new JTextField public boolean verify(JComponent input) { JTextField tf = (​JTextField) input; return "pass".equals(tf. This method should have no side effects. The <input> tag specifies an input field where the user can enter data. The <input> element is the most important form element. The <input> element can be displayed in several ways, depending on the type attribute. The different input types are as follows: <input type="button"> <input type="checkbox"> <input type="color"> <input type="date">


InputVerifier (Java Platform SE 7 ), Не давайте программу ждать. Это JFrame приложение, а не линия инструмента командной, так что не использовать умы писать инструменты  Or that you are going to get input from somewhere else, like a hardware scanner, and then programmatically change the content of the JTextField? In the first case, you should probably just use a keyboard listener registered on the JTextField and count the number of characters in its content every time a keyboard event is fired from the JTextField.