Input Verifier Example : Data Validation « Swing Components « Java

Input Verifier Example

/*
Code revised from Desktop Java Live:
http://www.sourcebeat.com/downloads/
*/

import javax.swing.BorderFactory;
import javax.swing.InputVerifier;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.FormLayout;

public class InputVerifierExample extends JPanel {
    private JLabel validationLabel;

    public InputVerifierExample() {
        DefaultFormBuilder formBuilder = new DefaultFormBuilder(new FormLayout("right:pref, 3dlu, p:g"));
        formBuilder.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

        JTextField javaField = new JTextField();
        JTextField swingField = new JTextField();
        this.validationLabel = new JLabel();

        javaField.setInputVerifier(new StrictInputVerifier("Java"));
        swingField.setInputVerifier(new StrictInputVerifier("Swing"));

        formBuilder.append("Java Field:", javaField);
        formBuilder.append("Swing Field:", swingField);
        formBuilder.appendParagraphGapRow();
        formBuilder.append(validationLabel, 3);

        add(formBuilder.getPanel());
    }

    private class StrictInputVerifier extends InputVerifier {
        private String validString;

        public StrictInputVerifier(String validString) {
            this.validString = validString;
        }

        public boolean verify(JComponent input) {
            JTextField textField = (JTextField) input;
            if (validString.equals(textField.getText())) {
                validationLabel.setText("");
                return true;
            } else {
                validationLabel.setText("Field must only contain " + this.validString);
                return false;
            }
        }
    }

    public static void main(String[] a){
      JFrame f = new JFrame("Input Verifier Example");
      f.setDefaultCloseOperation(2);
      f.add(new InputVerifierExample());
      f.pack();
      f.setVisible(true);
    }
}

jgoodiesValidation.zip( 277 k)

1.	Component Hints Example
2.	Error Dialog Example
3.	Field List Validator Example
4.	Info Assist Example
5.	Validating Domain Object Example
6.	Validating On Focus Lost Example
7.	Validating On Key Typed Example
8.	Validating Presentation Model Example
9.	Validation How to Example
10.	Validation Icons Example
11.	Validation Results View Example
12.	Different styles how to indicate that a component contains invalid data
13.	how to provide input hints
14.	Different validation result views
15.	different validation times: key-typed, focus lost, commit (OK pressed)
16.	Different configurations of JFormattedTextField
17.	different configurations of JFormattedTextField: Number
18.	Different styles to mark mandatory fields

Input Verifier Example : Data Validation « Swing Components « Java

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