StackOverflow2013

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copied!<p>You may have inadvertently selected <code>Java Desktop Application</code></p> <blockquote> <p>Creates a skeleton of a desktop application based on the <a href="http://en.wikipedia.org/wiki/Swing_Application_Framework" rel="noreferrer">Swing Application Framework (JSR 296)</a>. This template provides basic application infrastructure such as a menu bar, persisting of window state, and status bar. With this template, you can also generate code to create a GUI interface for a database table.</p> </blockquote> <p>Rather than <code>Java Application</code></p> <blockquote> <p>Creates a new Java SE application in a standard IDE project. You can also generate a main class in the project. Standard projects use an IDE-generated Ant build script to build, run, and debug your project.</p> </blockquote> <p>Addendum: Use <code>File > New File > Java GUI Forms</code> to add high-level containers, e.g. an enclosing <code>JPanel</code>, that can be instantiated from <code>main()</code>'s <code>run()</code> method.</p> <p>For example, <code>Main.main()</code>:</p> <pre><code>package temp; import java.awt.EventQueue; import javax.swing.JFrame; public class Main { public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { JFrame f = new JFrame(); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.add(new NewJPanel()); f.pack(); f.setVisible(true); } }); } } </code></pre> <p>And a <code>NewJPanel</code> built in the GUI editor (note "Generated Code"):</p> <pre><code>package temp; public class NewJPanel extends javax.swing.JPanel { /** Creates new form NewJPanel */ public NewJPanel() { initComponents(); } @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { jLabel1 = new javax.swing.JLabel(); jLabel1.setText("Hello, world!"); org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(this); this.setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .add(163, 163, 163) .add(jLabel1) .addContainerGap(157, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .add(113, 113, 113) .add(jLabel1) .addContainerGap(171, Short.MAX_VALUE)) ); }// </editor-fold> // Variables declaration - do not modify private javax.swing.JLabel jLabel1; // End of variables declaration } </code></pre>

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