Spring Demo 3 : Layout « Swing JFC « Java






Spring Demo 3

Spring Demo 3
      
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import java.awt.Container;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.SpringLayout;

public class SpringDemo3 {
  /**
   * Create the GUI and show it. For thread safety, this method should be
   * invoked from the event-dispatching thread.
   */
  private static void createAndShowGUI() {
    //Make sure we have nice window decorations.
    JFrame.setDefaultLookAndFeelDecorated(true);

    //Create and set up the window.
    JFrame frame = new JFrame("SpringDemo3");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    //Set up the content pane.
    Container contentPane = frame.getContentPane();
    SpringLayout layout = new SpringLayout();
    contentPane.setLayout(layout);

    //Create and add the components.
    JLabel label = new JLabel("Label: ");
    JTextField textField = new JTextField("Text field", 15);
    contentPane.add(label);
    contentPane.add(textField);

    //Adjust constraints for the label so it's at (5,5).
    layout.putConstraint(SpringLayout.WEST, label, 5, SpringLayout.WEST,
        contentPane);
    layout.putConstraint(SpringLayout.NORTH, label, 5, SpringLayout.NORTH,
        contentPane);

    //Adjust constraints for the text field so it's at
    //(<label's right edge> + 5, 5).
    layout.putConstraint(SpringLayout.WEST, textField, 5,
        SpringLayout.EAST, label);
    layout.putConstraint(SpringLayout.NORTH, textField, 5,
        SpringLayout.NORTH, contentPane);

    //Adjust constraints for the content pane: Its right
    //edge should be 5 pixels beyond the text field's right
    //edge, and its bottom edge should be 5 pixels beyond
    //the bottom edge of the tallest component (which we'll
    //assume is textField).
    layout.putConstraint(SpringLayout.EAST, contentPane, 5,
        SpringLayout.EAST, textField);
    layout.putConstraint(SpringLayout.SOUTH, contentPane, 5,
        SpringLayout.SOUTH, textField);

    //Display the window.
    frame.pack();
    frame.setVisible(true);
  }

  public static void main(String[] args) {
    //Schedule a job for the event-dispatching thread:
    //creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        createAndShowGUI();
      }
    });
  }
}
           
         
    
    
    
    
    
  








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